Stephen Campbell

Betts, J. T., Campbell, S., & Digirolamo, C. (2021). EXAMINATION OF SOLVING OPTIMAL CONTROL PROBLEMS WITH DELAYS USING GPOPS-II. NUMERICAL ALGEBRA CONTROL AND OPTIMIZATION, 11(2), 283–305. https://doi.org/10.3934/naco.2020026

Betts, J. T., Campbell, S. L., & Digirolamo, C. (2020). INITIAL GUESS SENSITIVITY IN COMPUTATIONAL OPTIMAL CONTROL PROBLEMS. NUMERICAL ALGEBRA CONTROL AND OPTIMIZATION, 10(1), 39–43. https://doi.org/10.3934/naco.2019031

Campbell, S. L., & Kunkel, P. (2020). Invariant Subspaces, Derivative Arrays, and the Computation of the Drazin Inverse. VIETNAM JOURNAL OF MATHEMATICS, 48(4), 661–677. https://doi.org/10.1007/s10013-020-00401-7

Campbell, S. L., & Campbell, M. A. (2019). A Problem from Genetics and the Singular Value Decomposition [Preprint]. https://doi.org/10.13140/RG.2.2.29979.92964

Chen, Z., Cao, Z., Huang, Q., & Campbell, S. L. (2018). Decentralized Observer-Based Reliable Control for a Class of Interconnected Markov Jumped Time-Delay System Subject to Actuator Saturation and Failure. CIRCUITS SYSTEMS AND SIGNAL PROCESSING, 37(11), 4728–4752. https://doi.org/10.1007/s00034-018-0795-7

Chen, Z., Cao, Z., Huang, Q., & Campbell, S. L. (2018). Reliable H-infinity control on saturated linear Markov jump system with uncertain transition rates and asynchronous jumped actuator failure. JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS, 355(9), 3853–3872. https://doi.org/10.1016/j.jfranklin.2018.02.029

Campbell, S. L. (2017). Comment on solution of differential-algebraic equations through gradient flow embedding. Computers & Chemical Engineering, 106, 529–531. https://doi.org/10.1016/j.compchemeng.2017.07.008

Campbell, S. L. (2016). Active Fault Detection in Nonlinear Differential Algebraic Equations I: General Systems. In D. Martin (Ed.), Fault Detection: Methods, Applications and Technology (pp. 1–27). Hauppauge, NY: Nova Publishers.

Campbell, S. L., & Scott, J. R. (2016). Active Fault Detection in Nonlinear Differential Algebraic Equations II: Using Linearizations. In D. Martin (Ed.), Fault Detection: Methods, Applications and Technology (pp. 29–51). Hauppauge, NY: Nova Publishers.

Campbell, S. L., & Owen, H. (2016). Actuator effects on auxiliary signal design for failure detection. SoutheastCon 2016. Presented at the SoutheastCon 2016. https://doi.org/10.1109/secon.2016.7506748

Campbell, S. L., & Scott, J. R. (2016). Auxiliary signal design for failure detection with initial prior information. SoutheastCon 2016. Presented at the SoutheastCon 2016. https://doi.org/10.1109/secon.2016.7506738

Campbell, S. L., & Betts, J. T. (2016). Comments on direct transcription solution of DAE constrained optimal control problems with two discretization approaches. NUMERICAL ALGORITHMS, 73(3), 807–838. https://doi.org/10.1007/s11075-016-0119-6

Campbell, S., & Kunkel, P. (2016). Solving higher index DAE optimal control problems. Numerical Algebra, Control and Optimization, 6(4), 447–472. https://doi.org/10.3934/naco.2016020

Betts, J. T., Campbell, S. L., & Thompson, K. C. (2016). Solving optimal control problems with control delays using direct transcription. APPLIED NUMERICAL MATHEMATICS, 108, 185–203. https://doi.org/10.1016/j.apnum.2015.12.008

Betts, J. T., Campbell, S. L., & Thompson, K. (2015). Lobatto IIIA methods, direct transcription, and DAEs with delays. NUMERICAL ALGORITHMS, 69(2), 291–300. https://doi.org/10.1007/s11075-014-9896-y

Zhang, A. Q., & Campbell, S. (2015). Robust finite-time filtering for singular discrete-time stochastic systems. 2015 27th chinese control and decision conference (ccdc), 913–918. https://doi.org/10.1109/ccdc.2015.7162049

Campbell, S. L. (2015). The Flexibility of DAE Formulations. In Surveys in Differential-Algebraic Equations III (pp. 1–59). https://doi.org/10.1007/978-3-319-22428-2_1

Campbell, S. L., & Scott, J. R. (2014). Asynchronous auxiliary signal design for failure detection. 2014 IEEE International Conference on Systems, Man, and Cybernetics (SMC). Presented at the 2014 IEEE International Conference on Systems, Man and Cybernetics - SMC. https://doi.org/10.1109/smc.2014.6974340

Campbell, S., & Scott, J. (2014). Auxiliary signal design for failure detection in differential-algebraic equations. Numerical Algebra, Control and Optimization, 4(2), 151–179. https://doi.org/10.3934/naco.2014.4.151

Scott, J. R., & Campbell, S. L. (2014). Auxiliary signal design for failure detection in high index differential-algebraic equations. 53rd IEEE Conference on Decision and Control. Presented at the 2014 IEEE 53rd Annual Conference on Decision and Control (CDC). https://doi.org/10.1109/cdc.2014.7040395

Bobinyec, K. S., & Campbell, S. L. (2014). Linear Differential Algebraic Equations and Observers. In Surveys in Differential-Algebraic Equations II (pp. 1–67). https://doi.org/10.1007/978-3-319-11050-9_1

Betts, J. T., Campbell, S. L., & Thompson, K. C. (2013). Direct Transcription Solution of Optimal Control Problems with Differential Algebraic Equations with Delays. Power and Energy / 807: Intelligent Systems and Control / 808: Technology for Education and Learning. Presented at the Power and Energy. https://doi.org/10.2316/p.2013.807-003

Campbell, S. L., & Holte, L. E. (2013). Eigenvalue placement in completions of DAES. Electronic Journal of Linear Algebra, 26(1), 520–534. https://doi.org/10.13001/1081-3810.1667

Scott, J. R., & Campbell, S. L. (2013). Observer based fault detection in differential algebraic equations. In 2013 Proceedings of the Conference on Control and its Applications (pp. 176–183). https://doi.org/10.1137/1.9781611973273.24

Campbell, S. L., & Kunkel, P. (2013). On the numerical treatment of linear-quadratic optimal control problems for general linear time-varying differential-algebraic equations. JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, 242, 213–231. https://doi.org/10.1016/j.cam.2012.10.011

Betts, J. T., Campbell, S. L., & Thompson, K. (2013). Simulation and Optimization of Systems with Delays. Proceedings of the 2013 Spring Simulation Multiconference Poster Session, 1084–1085. San Diego: Society for Computer Simulation International.

Campbell, S., Kunkel, P., & Bobinyec, K. (2012). A minimal norm corrected underdetermined Gauss-Newton procedure. Applied Numerical Mathematics, 62(5), 592–605. https://doi.org/10.1016/j.apnum.2012.01.006

Ashari, A. E., Nikoukhah, R., & Campbell, S. L. (2012). Active Robust Fault Detection in Closed-Loop Systems: Quadratic Optimization Approach. IEEE Transactions on Automatic Control, 57(10), 592–605. https://doi.org/10.1109/tac.2012.2188430

Betts, J. T., Campbell, S. L., & Thompson, K. C. (2012). Chapter 10: Optimal Control of a Delay PDE. In Control and Optimization with Differential-Algebraic Constraints (pp. 213–231). https://doi.org/10.1137/9781611972252.ch10

Bobinyec, K., Campbell, S. L., & Kunkel, P. (2012). Constructing observers for linear time varying DAEs. 2012 IEEE 51st IEEE Conference on Decision and Control (CDC), 5749–5754. https://doi.org/10.1109/cdc.2012.6426989

Biegler, L. T., Campbell, S. L., & Mehrmann, V. (Eds.). (2012). Control and Optimization with Differential-Algebraic Constraints. https://doi.org/10.1137/9781611972252

Biegler, L., Campbell, S. L., & Mehrmann, V. (Eds.). (2012). Control and Optimization with Differential-Algebraic Constraints. Philadelphia, PA: Society for Industrial and Applied Mathematics.

Ashari, A. E., Nikoukhah, R., & Campbell, S. L. (2012). Effects of feedback on active fault detection. AUTOMATICA, 48(5), 866–872. https://doi.org/10.1016/j.automatica.2012.02.020

Campbell, S., Kunkel, P., & Mehrmann, V. (2012). Regularization of linear and nonlinear descriptor systems. Control and optimization with differential-algebraic constraints, (23), 17–36. https://doi.org/10.1137/9781611972252.ch2

Stephen, C., & Martene, F. (2011). Active incipient fault detection in continuous time systems with multiple simultaneous faults. Numerical Algebra, Control and Optimization, 1(2), 211–224. https://doi.org/10.3934/naco.2011.1.211

Ashari, A. E., Nikoukhah, R., & Campbell, S. L. (2011). Auxiliary signal design for robust active fault detection of linear discrete-time systems. AUTOMATICA, 47(9), 1887–1895. https://doi.org/10.1016/j.automatica.2011.06.009

Betts, J. T., Campbell, S. L., Thompson, K. C., Simos, T. E., Psihoyios, G., Tsitouras, C., & Anastassi, Z. (2011). Direct Transcription Solution of Optimal Control Problems with Control Delays. Presented at the NUMERICAL ANALYSIS AND APPLIED MATHEMATICS ICNAAM 2011: International Conference on Numerical Analysis and Applied Mathematics. https://doi.org/10.1063/1.3636665

Andjelkovic, I., & Campbell, S. L. (2011). Direct optimization determination of auxiliary test signals for linear problems with model uncertainty. IEEE Conference on Decision and Control and European Control Conference. Presented at the 2011 50th IEEE Conference on Decision and Control and European Control Conference (CDC-ECC 2011). https://doi.org/10.1109/cdc.2011.6160186

Betts, J. T., Campbell, S. L., & Thompson, K. (2011). Direct transcription solution of optimal control problems with delays. Numerical Analysis and Applied Mathematics ICNAAM2011 AIP Conf. Proc., 1389, 38–41.

Bobinyec, K., Campbell, S. L., & Kunkel, P. (2011). Full order observers for linear DAEs. IEEE Conference on Decision and Control and European Control Conference. Presented at the 2011 50th IEEE Conference on Decision and Control and European Control Conference (CDC-ECC 2011). https://doi.org/10.1109/cdc.2011.6160215

Bobinyec, K., Campbell, S. L., & Kunkel, P. (2011). Maximally reduced observers for linear time varying DAEs. 2011 IEEE International Symposium on Computer-Aided Control System Design (CACSD). Presented at the Control (MSC). https://doi.org/10.1109/cacsd.2011.6044570

Betts, J. T., Campbell, S. L., & Thompson, K. C. (2011). Optimal control software for constrained nonlinear systems with delays. 2011 IEEE International Symposium on Computer-Aided Control System Design (CACSD). Presented at the Control (MSC). https://doi.org/10.1109/cacsd.2011.6044560

Nikoukhah, R., Campbell, S. L., & Drake, K. (2010). An active approach for detection of incipient faults. INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE, 41(2), 241–257. https://doi.org/10.1080/00207720903045817

Campbell, S. L., Chancelier, J.-P., & Nikoukhah, R. (2010). Modeling and Simulation in Scilab/Scicos with ScicosLab 4.4. https://doi.org/10.1007/978-1-4419-5527-2

Bobinyec, K., Campbell, S. L., & Kunkel, P. (2010). Stabilized Completions of Differential Algebraic Equations and the Design of Observers. Proceedings of Neural, Parallel, and Scientific Computation. Presented at the Fourth International Conference on Neural, Parallel and Scientific Computation, Atlanta, GA.

Campbell, S., & Nikoukhah, R. (2010). Teaching Introductory Differential Equations with ScicosLab. CODEE Journal, 7(1), 1–12. https://doi.org/10.5642/codee.201007.01.02

Sweetingham, K. A., & Campbella, S. L. (2009). AUXILIARY SIGNAL DESIGN FOR FAULT DETECTION IN NONLINEAR SYSTEMS. Control and Intelligent Systems, 37(3). https://doi.org/10.2316/journal.201.2009.3.201-2049

Fair, M., & Campbell, S. L. (2009). Active incipient fault detection with more than two simultaneous faults. 2009 IEEE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN AND CYBERNETICS (SMC 2009), VOLS 1-9, pp. 3322–3327. https://doi.org/10.1109/icsmc.2009.5346202

Fair, M., & Campbell, S. L. (2009). Active incipient fault detection with two simultaneous faults. IFAC Proceedings Volumes, 42(8), 573–578. https://doi.org/10.3182/20090630-4-es-2003.00095

Ashari, A. E., Nikoukhah, R., & Campbell, S. L. (2009). Active robust fault detection of closed-loop systems: general cost case. IFAC Proceedings Volumes, 42(8), 585–590. https://doi.org/10.3182/20090630-4-ES-2003.00097

Okay, I., Campbell, S. L., & Kunkel, P. (2009). Completions of implicitly defined linear time varying vector fields. LINEAR ALGEBRA AND ITS APPLICATIONS, 431(9), 1422–1438. https://doi.org/10.1016/j.laa.2009.05.006

Campbell, S. L., & Kunkel, P. (2009). Completions of nonlinear DAE flows based on index reduction techniques and their stabilization. JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, 233(4), 1021–1034. https://doi.org/10.1016/j.cam.2009.08.111

Ashari, A. E., Nikoukhah, R., & Campbell, S. L. (2009). Feedback in Active Fault Detection. IFAC Proceedings Volumes, 42(10), 192–196. https://doi.org/10.3182/20090706-3-fr-2004.00032

Campbell, S. L., & Meyer, C. D. (2009). Generalized Inverses of Linear Transformations. In GENERALIZED INVERSES OF LINEAR TRANSFORMATIONS (Vol. 56, pp. 1–272). https://doi.org/10.1137/1.9780898719048

Valdez-Jasso, D., Haider, M. A., Campbell, S. L., Bia, D., Zocalo, Y., Armentano, R. L., & Olufsen, M. S. (2009). Modeling Viscoelastic Wall Properties of Ovine Arteries. ASME 2009 Summer Bioengineering Conference, Parts A and B. Presented at the ASME 2009 Summer Bioengineering Conference. https://doi.org/10.1115/sbc2009-205640

Choe, D., Campbell, S. L., & Nikoukhah, R. (2009). Optimal piecewise-constant signal design for active fault detection. INTERNATIONAL JOURNAL OF CONTROL, 82(1), 130–146. https://doi.org/10.1080/00207170801993587

Ashari, A. E., Nikoukhah, R., & Campbell, S. L. (2009). Robust Multi-Model Fault Detection and Control using an Active Closed-Loop Approach. Proceedings of the 15th IFAC Symposium on System Identification - SYSID 2009. Presented at the 15th IFAC Symposium on System Identification - SYSID 2009, St. Malo, France.

Campbell, S. L., & Linh, V. H. (2009). Stability criteria for differential-algebraic equations with multiple delays and their numerical solutions. APPLIED MATHEMATICS AND COMPUTATION, 208(2), 397–415. https://doi.org/10.1016/j.amc.2008.12.008

Drake, K. J., Bradshaw, K., Violante, P., & Campbell, S. L. (2009, May 12). Two applications of Modeling and Simulation in the Design and Development of Navy Systems. Presented at the American Society of Naval Engineers (ASNE) Intelligent Ships Symposium VIII (ISSVIII) Proceedings, Philadelphia, PA.

Andjelkovic, I., Sweetingham, K., & Campbell, S. L. (2008). Active fault detection in nonlinear systems using auxiliary signals. 2008 American Control Conference. Presented at the 2008 American Control Conference (ACC '08). https://doi.org/10.1109/acc.2008.4586809

Engelsone, A., & Campbell, S. L. (2008). Adjoint estimation using direct transcription multipliers: compressed trapezoidal method. OPTIMIZATION AND ENGINEERING, 9(3), 291–305. https://doi.org/10.1007/s11081-008-9038-2

Okay, I., Campbell, S. L., & Kunkel, P. (2008). Completions of Implicitly Defined Vector fields and their applications. Proceedings of the International Symposium on Mathematical Theory of Networks and Systems (MTNS 08). Presented at the International Symposium on Mathematical Theory of Networks and Systems (MTNS 08), Virginia Tech, Blacksburg, Virginia, USA.

Campbell, S., Linh, V., & Petzold, L. (2008). Differential-algebraic equations. Scholarpedia, 3(8), 2849. https://doi.org/10.4249/scholarpedia.2849

Nikoukhah, R., & Campbell, S. L. (2008). On the detection of small parameter variations in linear uncertain systems. EUROPEAN JOURNAL OF CONTROL, 14(2), 158–171. https://doi.org/10.3166/EJC.14.158-171

Campbell, S. L., & Maerz, R. (2007). Direct transcription solution of high index optimal control problems and regular Euler-Lagrange equations. JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, 202(2), 186–202. https://doi.org/10.1016/j.cam.2006.02.024

Engelsone, A., Campbell, S. L., & Betts, J. T. (2007). Direct transcription solution of higher-index optimal control problems and the virtual index. APPLIED NUMERICAL MATHEMATICS, 57(3), 281–296. https://doi.org/10.1016/j.apnum.2006.03.012

Betts, J. T., Campbell, S. L., & Engelsone, A. (2007). Direct transcription solution of optimal control problems with higher order state constraints: theory vs practice. OPTIMIZATION AND ENGINEERING, 8(1), 1–19. https://doi.org/10.1007/s11081-007-9000-8

Drake, K. J., Campbell, S. L., Andjelkovic, I., & Sweetingham, K. (2007). Model-Based Failure Detection on Nonlinear Systems: Theory and Transition. Naval Engineers Journal, 119(2), 93–107. https://doi.org/10.1111/j.0028-1425.2007.00022.x

Campbell, S. L., Betts, J. T., Engelsone, A., Nikoukhah, R., & Najafi, M. (2007). Some software aspects of DAE simulation & optimization software. PAMM, 7(1), 1023103–1023104. https://doi.org/10.1002/pamm.200700495

Okay, I., Campbell, S. L., & Kunkel, P. (2007). The additional dynamics of least squares completions for linear differential algebraic equations. LINEAR ALGEBRA AND ITS APPLICATIONS, 425(2-3), 471–485. https://doi.org/10.1016/j.laa.2007.02.005

Drake, K. J., Campbell, S. L., Andjelkovic, I., & Sweetingham, K. (2006). Active Incipient Failure Detection: A Nonlinear Case Study. Proceedings of the 4th International Conference on Computing, Communications and Control Technologies: CCCT '06. Presented at the 4th International Conference on Computing, Communications and Control Technologies: CCCT '06, Orlando, FL.

Drake, K. J., Campbell, S. L., Andjelkovic, I. V., Hannas, B. L., & Sweetingham, K. A. (2006). Applications of Robust Failure Detection Algorithms to Power Systems. Proceedings of the 13th International Conference on, Intelligent Systems Application to Power Systems. Presented at the 13th International Conference on, Intelligent Systems Application to Power Systems. https://doi.org/10.1109/isap.2005.1599275

Nikoukhah, R., & Campbell, S. L. (2006, February). Auxiliary signal design for active failure detection in uncertain linear systems with a priori information. AUTOMATICA, Vol. 42, pp. 219–228. https://doi.org/10.1016/j.automatica.2005.09.011

Choe, D., Campbell, S. L., & Nikoukhah, R. (2006). Comparison between failure detection test signals for continuous systems and sampled-data systems. Proceedings of the 45th IEEE Conference on Decision and Control. Presented at the Proceedings of the 45th IEEE Conference on Decision and Control. https://doi.org/10.1109/cdc.2006.377349

Campbell, S., März, R., Rentrop, P., & Petzold, L. (2006). Differential-Algebraic Equations. Oberwolfach Reports, 1077–1168. https://doi.org/10.4171/owr/2006/18

Campbell, S., Drake, K., Andjelkovic, I., Sweetingham, K., & Choe, D. (2006). Model Based Failure Detection using Test Signals from Linearizations: A Case Study. 2006 IEEE Conference on Computer-Aided Control Systems Design. Presented at the 2006 IEEE Conference on Computer-Aided Control Systems Design. https://doi.org/10.1109/cacsd.2006.285526

Campbell, S., Chancelier, J.-P., & Nikoukhah, R. (2006). Modeling and simulation in Scilab/Scicos. New York: Springer.

Engelsone, A., Campbell, S. L., & Betts, J. T. (2006). Order of Convergence in the Direct Transcription Solution of Optimal Control Problems. Proceedings of the 44th IEEE Conference on Decision and Control. Presented at the 44th IEEE Conference on Decision and Control. https://doi.org/10.1109/cdc.2005.1582741

Nikoukhah, R., & Campbell, S. L. (2006). Robust detection of incipient faults: an active approach. 2006 14th Mediterranean Conference on Control and Automation. Presented at the 2006 14th Mediterranean Conference on Control and Automation. https://doi.org/10.1109/med.2006.328694

Choe, D., Campbell, S. L., & Nikoukhah, R. (2005). A comparison of optimal and suboptimal auxiliary signal design approaches for robust failure detection. Proceedings of 2005 IEEE Conference on Control Applications, 2005. CCA 2005. Presented at the 2005 IEEE Conference on Control Applications, 2005. CCA 2005. https://doi.org/10.1109/cca.2005.1507340

Nikoukhah, R., & Campbell, S. L. (2005). A multi-model approach to failure detection in uncertain sampled-data systems. EUROPEAN JOURNAL OF CONTROL, 11(3), 255–265. https://doi.org/10.3166/ejc.11.255-265

Choe, D., Campbell, S. L., & Nikoukhah, R. (2005). Auxiliary Signal Design for Robust Failure Detection: A Case Study. 2005 International Conference on Control and Automation. Presented at the 2005 International Conference on Control and Automation. https://doi.org/10.1109/icca.2005.1528269

Najafi, M., Nikoukhah, R., & Campbell, S. L. (2005). Computation of consistent initial conditions for multi-mode DAEs: application to Scicos. 2004 IEEE International Conference on Robotics and Automation (IEEE Cat. No.04CH37508). Presented at the 2004 IEEE International Symposium on Computer Aided Control Systems Design. https://doi.org/10.1109/cacsd.2004.1393863

Engelsone, A., Campbell, S. L., & Betts, J. T. (2005). Direct Transcription Solution of Higher-Index Optimal Control Problems. In N. Dangoumau, M. Benrejeb, & P. Borne (Eds.), 17th IMACS world congress on scientific computation, applied mathematics and simulation: Paris, France, July 11-15, 2005. Villeneuve d'Ascq: École centrale de Lille.

Betts, J. T., & Campbell, S. L. (2005). Discretize then Optimize. In D. R. Ferguson & T. J. Peters (Eds.), Mathematics for industry : challenges and frontiers : a process view: practice and theory. Philadelphia: SIAM Publications.

Najafi, M., Nikoukhah, R., & Campbell, S. L. (2005). The role of model formulation in DAE integration: Experience gained in developing Scicos. In N. Dangoumau, M. Benrejeb, & P. Borne (Eds.), 17th IMACS world congress on scientific computation, applied mathematics and simulation: Paris, France, July 11-15, 2005. Villeneuve d'Ascq: École centrale de Lille.

Campbell, S. L., Selva, M., & Arevalo, C. (2004). A numerical integrator for simulation of unstructured implicit models. Proceedings of the 2004 American Control Conference. Presented at the Proceedings of the 2004 American Control Conference. https://doi.org/10.23919/acc.2004.1384754

Campbell, S. L., Drake, K., & Nikoukhah, R. (2004). Analysis of spline based auxiliary signal design for failure detection in delay systems. SMC'03 Conference Proceedings. 2003 IEEE International Conference on Systems, Man and Cybernetics. Conference Theme - System Security and Assurance (Cat. No.03CH37483). Presented at the SMC '03 2003IEEE International Conference on Systems, Man and Cybernetics. https://doi.org/10.1109/icsmc.2003.1244267

Campbell, S. L., & Nikoukhah, R. (2004). Auxiliary Signal Design for Failure Detection. https://doi.org/10.1515/9781400880041

Characterization and Computation of a "Good Control". (2004). In Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, Institut für Mathematik. https://doi.org/10.18452/2583

Drake, K., & Campbell, S. L. (2004). Design of a Detection Signal for Fault Detection and Model Identification on Systems with Multiple Delays. Proceedings of the American Society of Naval Engineers Day 2004. Presented at the American Society of Naval Engineers Day, Alexandria, VA.

Betts, J. T., Campbell, S. L., & Engelsone, A. (2004). Direct transcription solution of inequality constrained optimal control problems. Proceedings of the 2004 American Control Conference. Presented at the Proceedings of the 2004 American Control Conference. https://doi.org/10.23919/acc.2004.1386809

Betts, J. T., Campbell, S. L., & Kalla, N. N. (2004). Initialization of direct transcription optimal control software. 42nd IEEE International Conference on Decision and Control (IEEE Cat. No.03CH37475). Presented at the 42nd IEEE International Conference on Decision and Control. https://doi.org/10.1109/cdc.2003.1271741

Najafi, M., Nikoukhah, R., & Campbell, S. L. (2004). ODE and DAE integrators in Scicos environment. In M. H. Hamza (Ed.), Proceedings of the IASTED International Conference on Applied Simulation and Modelling and Simulation : June 28-30, 2004, Rhodes, Greece. Anaheim, California: ACTA Press.

Campbell, S. L. (2004). Practical methods for optimal control using nonlinear programming, John T. Betts, SIAM, Philadelphia, PA, 2001, ISBN 0-89871-488-5. International Journal of Robust and Nonlinear Control, 14(11), 1019–1021. https://doi.org/10.1002/rnc.874

Campbell, S. L., & Nikoukhah, R. (2004). Software for auxiliary signal design. Proceedings of the 2004 American Control Conference. Presented at the Proceedings of the 2004 American Control Conference. https://doi.org/10.23919/acc.2004.1384004

Arevalo, C., Campbell, S. L., & Selva, M. (2004). Unitary partitioning in general constraint preserving DAE integrators. MATHEMATICAL AND COMPUTER MODELLING, 40(11-12), 1273–1284. https://doi.org/10.1016/j.mcm.2005.01.018

Nikoukhah, R., & Campbell, S. L. (2003). Auxiliary signal design for failure detection in uncertain sampled-data systems. 2003 European Control Conference (ECC). Presented at the 2003 European Control Conference (ECC). https://doi.org/10.23919/ecc.2003.7085087

Nikoukhah, R., & Campbell, S. L. (2003). Auxiliary signal design for robust active failure detection: the general cost case. Proc. Safeprocess 2003, 259–264.

Campbell, S. L., Drake, K., & Nikoukhah, R. (2003). Early decision making when using proper auxiliary signals. Proceedings of the 41st IEEE Conference on Decision and Control, 2002. Presented at the IEEE Conference on Decision and Control. https://doi.org/10.1109/cdc.2002.1184790

Nikoukhah, R., & Campbell, S. L. (2002). Active failure detection: Auxiliary signal design and on-line detection. MED2002 : 10th IEEE Mediterranean conference on control and automation : Instituto Superior Técnico : July 9-12, 2002 : Lisboa, Portugal : proceedings. Presented at the 10th IEEE Mediterranean conference on control and automation, Lisbon, Portugal.

Campbell, S. L., Drake, K., & Nikoukhah, R. (2002). Auxiliary signal design for multi-model identification in systems with multiple delays. MED2002 : 10th IEEE Mediterranean Conference on Control and Automation : Instituto Superior Técnico : July 9-12, 2002 : Lisboa, Portugal : Proceedings. Presented at the 10th IEEE Mediterranean conference on control and automation, Lisbon, Portugal.

Campbell, S. L., Horton, K. G., & Nikoukhah, R. (2002, August). Auxiliary signal design for rapid multi-model identification using optimization. AUTOMATICA, Vol. 38, pp. 1313–1325. https://doi.org/10.1016/S0005-1098(02)00040-7

Nikoukhah, R., Campbell, S., Horton, K. G., & Delebecque, F. (2002). Auxiliary signal design for robust multimodel identification. IEEE Transactions on Automatic Control, 47(1), 158–164. https://doi.org/10.1109/9.981737

Betts, J. T., Biehn, N., Campbell, S. L., & Huffman, W. P. (2002). Compensating for order variation in mesh refinement for direct transcription methods II: Computational experience. JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, 143(2), 237–261. https://doi.org/10.1016/S0377-0427(01)00509-X

Betts, J. T., Biehn, N., & Campbell, S. L. (2002). Convergence of nonconvergent IRK discretizations of optimal control problems with state inequality constraints. SIAM JOURNAL ON SCIENTIFIC COMPUTING, 23(6), 1981–2007. https://doi.org/10.1137/S1064827500383044

Campbell, S. L., & Terrell, W. J. (2002). Determining flatness for complex nonlinear systems. Proceedings IEEE Southeastcon '95. Visualize the Future, 118–122. https://doi.org/10.1109/secon.1995.513069

Campbell, S. L., Horton, K., Nikoukhah, R., & Delebecque, F. (2002). Optimization formulations of auxiliary signal design for rapid multi-model identification. Automatica, 38, 1313–1325.

Campbell, S. L., & Nikoukhah, R. (2002). The design of auxiliary signals for robust active failure detection in uncertain systems. Proceedings of the Mathematical Theory of Networks and Systems. Presented at the Mathematical Theory of Networks and Systems, Notre Dame, IN.

Nikoukhah, R., Campbell, S. L., & Delebecque, F. (2001). Auxiliary signal design for failure detection in uncertain systems. In N. T. K. P. P. Groumpos & M. Polycarpou (Eds.), Proceedings of the 9th IEEE Mediterranean Conference on Control and Automation. Piscataway, N.J.: IEEE.

Campbell, S. L. (2001). Numerical analysis and systems theory. International Journal of Applied Mathematics and Computer Science, 11(5), 1025–1033.

Biehn, N., Campbell, S. L., Nikoukhah, R., & Delebecque, F. (2001, March). Numerically constructible observers for linear time-varying descriptor systems. AUTOMATICA, Vol. 37, pp. 445–452. https://doi.org/10.1016/S0005-1098(00)00168-0

Campbell, S. L., Drake, K., Nikoukhah, R., & Delebecque, F. (2001). Rapid multi-model identification in systems with delay. In C. T. A. K. Gu & S.-I. Niculescu (Eds.), Time delay systems 2001 (TDS 2001): A proceedings volume from the 3rd IFAC Workshop, Sante Fe, New Mexico, USA, 8-10 December 2001 (pp. 296–301). Oxford: Pergamon.

Betts, J. T., Biehn, N., Campbell, S. L., & Huffman, W. P. (2000). Compensating for order variation in mesh refinement for direct transcription methods. JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, 125(1-2), 147–158. https://doi.org/10.1016/S0377-0427(00)00465-9

Betts, J. T., Biehn, N., Campbell, S. L., & Huffman, W. P. (2000). Computational experience with exploiting order variation in mesh refinement for direct transcription methods. Proceedings: 16th IMACS World Congress. New Brunswick, NJ: IMACS.

Betts, J. T., Biehn, N., Campbell, S. L., & Huffman, W. P. (2000). Convergence of nonconvergent IRK discretizations of optimal control problems. Proceedings: 16th IMACS World Congress. New Brunswick, NJ: IMACS.

Nikoukhah, R., Campbell, S. L., & Delebecque, F. (2000). Detection signal design for failure detection: a robust approach. INTERNATIONAL JOURNAL OF ADAPTIVE CONTROL AND SIGNAL PROCESSING, 14(7), 701–724. https://doi.org/10.1002/1099-1115(200011)14:7<701::AID-ACS617>3.0.CO;2-6

Nikoukhah, R., Delebecque, F., Campbell, S. L., & Horton, K. (2000). Multi-model identification and the separability index. Proceedings of Mathematical Theory of Networks and Systems, 2000, (2000).

Nikoukhah, R., Campbell, S. L., & Delebecque, F. (2000). On a general descriptor LQ problem. Proceedings of the 8th IEEE Mediterranean Conference on Control & Automation: July 17-19, 2000, University of Patras, Patras, Greece.

Riaza, R., Campbell, S. L., & Marszalek, W. (2000). On singular equilibria of index-1 DAEs. CIRCUITS SYSTEMS AND SIGNAL PROCESSING, 19(2), 131–157. https://doi.org/10.1007/BF01212467

Campbell, S., Horton, K., Nikoukhah, R., & Delebecque, F. (2000). Rapid model selection and the separability index. Fault detection, supervision and safety for technical processes 2000 (SAFEPROCESS 2000): A proceedings volume from the 4th IFAC Symposium, Budapest, Hungary, 14-16 June 2000, 1187–1192. https://doi.org/10.1016/s1474-6670(17)37517-1

Biehn, N., Campbell, S. L., Jay, L., & Westbrook, T. (2000). Some comments on DAE theory for IRK methods and trajectory optimization. JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, 120(1-2), 109–131. https://doi.org/10.1016/S0377-0427(00)00306-X

Zou, Y., & Campbell, S. L. (2000). The jump behavior and stability analysis for 2-D descriptor systems. Multidimensional Systems and Signal Processing, 11(4), 339–358. https://doi.org/10.1023/a:1008429611994

Marszalek, W., & Campbell, S. L. (1999). DAEs arising from traveling wave solutions of PDEs II. COMPUTERS & MATHEMATICS WITH APPLICATIONS, 37(1), 15–34. https://doi.org/10.1016/S0898-1221(98)00238-7

Nikoukhah, R., Campbell, S. L., & Delebecque, F. (1999). Detection Signal Design for Failure Detection. Proceedings of the Iranian Conference on Electrical Engineering, 45–52.

Betts, J. T., Huffman, W. P., Biehn, N., & Campbell, S. L. (1999). Exploiting order variation in mesh refinement for direct transcription methods [Technical Report]. Boeing.

Nikoukhah, R., Campbell, S. L., & Delebecque, F. (1999). Kalman filtering for general discrete-time linear systems. IEEE TRANSACTIONS ON AUTOMATIC CONTROL, 44(10), 1829–1839. https://doi.org/10.1109/9.793722

Betts, J. T., Huffman, W. P., Biehn, N., & Campbell, S. L. (1999). Mesh refinement that exploits order variation. Proceedings of the Workshop: Optimalsteuerungsprobleme in der Luft- und Raumfahrt, Universitat Greifswald, 7/8 Oktober 1999  (Sonderforschungsbereich; 255), 1–12. Munchen: Hieronymus.

Campbell, S., Nikoukhah, R., & DeLebecque, F. (1999). Nonlinear descriptor systems. In Advances in control: Highlights of ECC '99 (pp. 247–282). https://doi.org/10.1007/978-1-4471-0853-5_9

Campbell, S. L., & Marszalek, W. (1999). The index of an infinite dimensional implicit system. MATHEMATICAL AND COMPUTER MODELLING OF DYNAMICAL SYSTEMS, 5(1), 18–42. https://doi.org/10.1076/mcmd.5.1.18.3625

Campbell, S. L., & Yeomans, K. D. (1998, October). Behavior of the nonunique terms in general DAE integrators. APPLIED NUMERICAL MATHEMATICS, Vol. 28, pp. 209–226. https://doi.org/10.1016/S0168-9274(98)00044-0

Campbell, S. (1998). Intelligent DAE solvers and user friendly design, simulation, and analysis packages. In 1998 IEEE International Conference on Systems, Man, and Cybernetics: Intelligent systems for humans in a cyberworld, Hyatt La Jolla, San Diego, California, USA, October 11-14, 1998 (pp. 177–3182). https://doi.org/10.1109/icsmc.1998.726491

Campbell, S. L., Hollenbeck, R., Yeomans, K., & Zhong, Y. (1998). Mixed symbolic-numerical computations with general DAEs I: System properties. Numerical Algorithms, 19(1-4), 73–83. https://doi.org/10.1023/A:1019154423096

Campbell, S. L., & Marszalek, W. (1998). Mixed symbolic-numerical computations with general DAEs II: An applications case study. Numerical Algorithms, 19(1-4), 85–94. https://doi.org/10.1023/A:1019106507166

Nikoukhah, R., Campbell, S. L., & Delebecque, F. (1998). Observer design for general linear time-invariant systems. AUTOMATICA, 34(5), 575–583. https://doi.org/10.1016/S0005-1098(98)00003-X

Biehn, N., Campbell, S., Delebecque, F., & Nikoukhah, R. (1998). Observer design for linear time varying descriptor systems: Numerical algorithms. In Proceedings of the 37th IEEE Conference on Decision and Control: December 16-18, 1998, Hyatt Regency Westshore, Tampa, Florida (pp. 3801–3806). https://doi.org/10.1109/cdc.1998.761815

Campbell, S., & Marszalek, W. (1998). The interaction between simulation and modeling in infinite dimensional systems. In G. C. A. Tornambae & A. M. Perdon (Eds.), Theory and practice of control: proceedings of the 6th IEEE Mediterranean Conference, Alghero, Sardinia, Italy 9-11 June 1998 (pp. 322–327). https://doi.org/10.1142/9789814447317_0053

Campbell, S. L., & Marszalek, W. (1997, September 15). DAEs arising from traveling wave solutions of PDEs. JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, Vol. 82, pp. 41–58. https://doi.org/10.1016/S0377-0427(97)00084-8

Campbell, S. L., & Zhong, Y. C. (1997). Jacobian reuse in explicit integrators for higher index DAEs. APPLIED NUMERICAL MATHEMATICS, 25(4), 391–412. https://doi.org/10.1016/S0168-9274(97)00052-4

Campbell, S. L., Hollenbeck, R., & Marszalek, W. (1997). Mixed symbolic-numerical computations with general DAEs. Proceedings of the Symposium on Differential-Algebraic Equations: Algebraic and Numerical Aspects, 23–34.

Campbell, S. L., Delebecque, F., & Nikoukhah, R. (1997). Observer design for linear time varying descriptor systems. Proceedings of the Control Industrial Systems, 1, 507–512.

vonWissel, D., Nikoukhah, R., Campbell, S. L., & Delebecque, F. (1997). The effects of computational delay in descriptor-based trajectory tracking control. INTERNATIONAL JOURNAL OF CONTROL, 67(2), 251–273. https://doi.org/10.1080/002071797224289

Campbell, S. L., Delebecque, F., & von Wissel, D. (1996). A mixed symbolic-numeric software environment. Proceedings of Joint Conference on Control Applications Intelligent Control and Computer Aided Control System Design. Presented at the Joint Conference on Control Applications Intelligent Control and Computer Aided Control System Design. https://doi.org/10.1109/cacsd.1996.555331

Campbell, S. L., & Hollenbeck, R. (1996). Automatic differentiation and implicit differential equations. In C. B. B. Berz, G. Corliss, & A. Griewank (Eds.), Computational differentiation: Techniques, applications, and tools. Philadelphia: SIAM.

Campbell, S. L., Kelley, C. T., & Yeomans, K. D. (1996). Consistent initial conditions for unstructured higher index DAEs: A computational study. Proceedings of Computational Engineering in Systems Applications, 416–421. Lille, France.

Campbell, S. L., Moore, E., & Zhong, Y. (1996). Constraint Preserving Integrators for Unstructured Higher Index DAEs. Zeitschrift Fuer Angewandte Mathematik Und Mechanik (ZAMM), 83–86.

Campbell, S. L., Ipsen, I. C. F., Kelley, C. T., Meyer, C. D., & Xue, Z. Q. (1996). Convergence Estimates for Solution of Integral Equations with GMRES. Journal of Integral Equations and Applications, 8(1), 19–34. https://doi.org/10.1216/jiea/1181075914

Campbell, S. L., von Wissel, D., Nikoukhah, R., & Delebecque, F. (1996). Descriptor predictive control: tracking controllers for a riderless bicycle. Proceedings of Computational Engineering in Systems Applications, 292–297. Lille, France.

Campbell, S. L., Ipsen, I. C. F., Kelley, C. T., & Meyer, C. D. (1996). GMRES and the minimal polynomial. BIT Numerical Mathematics, 36(4), 664–675. https://doi.org/10.1007/BF01733786

Campbell, S. L., von Wissel, D., Nikoukhah, R., & Delebecque, F. (1996). Nonlinear observer design using implicit system descriptions. In S. L. C. Wissel, R. Nikoukhah, & F. Delebecque (Eds.), Proceedings of Computational Engineering in Systems Applications (pp. 404–409). Lille, France.

Campbell, S. L., & Marszalek, W. (1996). ODE/DAE Integrators and MOL Problems. Zeitschrift Fuer Angewandte Mathematik Und Mechanik (ZAMM), 251–254.

Campbell, S. L., Delebecque, F., & Nikoukhah, R. (1996). Pencil algorithms and observer design. Proceedings of the 1996 IEEE International Symposium on Computer-Aided Control System Design (CACSD), 83–88. New York: Institute of Electrical and Electronics Engineers.

Campbell, S. L., & Moore, E. (1995). Constraint preserving integrators for general nonlinear higher index DAEs. Numerische Mathematik, 69(4), 383–399. https://doi.org/10.1007/s002110050099

Campbell, S. L. (1995). High-Index Differential Algebraic Equations. Mechanics of Structures and Machines, 23(2), 199–222. https://doi.org/10.1080/08905459508905235

Campbell, S. L. (1995). Linearization of DAEs along trajectories. ZAMP Zeitschrift f�r Angewandte Mathematik Und Physik, 46(1), 70–84. https://doi.org/10.1007/bf00952257

Campbell, S. L., Zhu, S. Q., Lewis, F. L., & Ito, K. (1995). Maneuver planning and robust path tracking for mobile robotic nonholonomic systems. Proceedings of the European Control Conference, 3080–3085.

Campbell, S. L. (1995). Nonregular 2D descriptor delay systems. IMA Journal of Mathematical Control and Information, 12(1), 57–67. https://doi.org/10.1093/imamci/12.1.57

Campbell, S. L., von Wissel, D., Nikoukhah, R., & Delebecque, F. (1995). Numerically Generated Path Stabilizing Controllers: Use of Preliminary Feedback. Kybernetika, 31(6), 657–668.

Campbell, S. L., & Griepentrog, E. (1995). Solvability of General Differential Algebraic Equations. SIAM Journal on Scientific Computing, 16(2), 257–270. https://doi.org/10.1137/0916017

Campbell, S. L., Delebecque, F., Nikoukhah, R., & von Wissel, D. (1995). The geometry of square invertible linear systems, matrix pencils, and predictive control. In A. Isidori, S. Bittanti, E. Mosca, A. De Luca, M. D. Di Benedetto, & G. Oriolo (Eds.), Proceedings of the third European Control Conference (ECC 95) (pp. 2962–2967).

Campbell, S. L., & Gear, C. W. (1995). The index of general nonlinear DAEs. Numerische Mathematik, 72(2), 173–196. https://doi.org/10.1007/s002110050165

Campbell, S. L., & Moore, E. (1994). A Coordinate Free Approach for Constraint Preserving Higher Index DAE Integrators. Proc. 94 IMACS World Congress on Scientific Computation, 65–68.

Campbell, S. L., & Zhong, Y. (1994). Computational speedup for general nonlinear higher index DAE integrators. IMACS '94 : proceedings of the 14th IMACS World congress on computation and applied mathematics, 69–73. Atlanta, Georgia: Georgia Institute of Technology.

Campbell, S. L. (1994). DAE Approximations of PDE Modeled Control Problems. Proceedings of the 2nd IEEE Mediterranean Symposium on New Directions in Control and Automation, 407–414.

Campbell, S. L., & Rakowski, M. (1994). Explicit formulae for completions of linear time varying singular systems of differential equations. Circuits, Systems, and Signal Processing, 13(2-3), 185–199. https://doi.org/10.1007/bf01188105

Campbell, S. L. (1994). Numerical Methods for Unstructured Higher Index DAEs. Annals of Numerical Mathematics, 1, 265–278.

Campbell, S. L., Nikoukhah, R., & von Wissel, D. (1994). Numerically generated path stabilizing controllers. I. Theoretical concerns. Proceedings of 1994 American Control Conference - ACC '94. Presented at the 1994 American Control Conference - ACC '94. https://doi.org/10.1109/acc.1994.752408

von Wissel, D., Nikoukhah, R., & Campbell, S. L. (1994). On a new predictive control strategy: application to a flexible-joint robot. Proceedings of 1994 33rd IEEE Conference on Decision and Control. Presented at the 1994 33rd IEEE Conference on Decision and Control. https://doi.org/10.1109/cdc.1994.411325

Campbell, S. L., & Moore, E. (1994). Progress on a general numerical method for nonlinear higher index DAEs II. Circuits, Systems, and Signal Processing, 13(2-3), 123–138. https://doi.org/10.1007/bf01188101

Campbell, S. L., Moore, E., & Zhong, Y. (1994). Utilization of automatic differentiation in control algorithms. IEEE Transactions on Automatic Control, 39(5), 1047–1052. https://doi.org/10.1109/9.284891

Campbell, S. L. (1993). Least squares completions for nonlinear differential algebraic equations. Numerische Mathematik, 65(1), 77–94. https://doi.org/10.1007/bf01385741

Campbell, S. L. (1992). A survey of time varying and nonlinear descriptor control systems. Proceedings 1992 International Symposium on Implicit & Nonlinear Systems, Automation and Robotics, 356–363. Dallas.

Campbell, S. L. (1992). Uniqueness of completions for linear time varying differential algebraic equations. Linear Algebra and Its Applications, 161, 55–67. https://doi.org/10.1016/0024-3795(92)90005-u

Campbell, S. L. (1991). 2-D (differential-delay) implicit systems. IMACS '91 : proceedings of the 13th IMACS World Congress on Computation and Applied Mathematics : July 22-26, 1991, Trinity College, Dublin, Ireland, 1828–1829. Dublin: Criterion Press.

Campbell, S. L. (1991). Comments on 2-D descriptor systems. Automatica, 27(1), 189–192. https://doi.org/10.1016/0005-1098(91)90020-3

Campbell, S. L., & Leimkuhler, B. (1991). Differentiation of Constraints in Differential-Algebraic Equations∗. Mechanics of Structures and Machines, 19(1), 19–39. https://doi.org/10.1080/08905459108905136

Campbell, S. L., Nichols, N. K., & Terrell, W. J. (1991). Duality, observability, and controllability for linear time-varying descriptor systems. Circuits Systems and Signal Processing, 10(4), 455–470. https://doi.org/10.1007/bf01194883

Campbell, S. L. (1991). Least squares completions for nonlinear index three Hessenberg DAEs. IMACS '91 : proceedings of the 13th IMACS World Congress on Computation and Applied Mathematics : July 22-26, 1991, Trinity College, Dublin, Ireland, 1145–1148. Dublin: Criterion.

Campbell, S. L., & Terrell, W. J. (1991). Observability of Linear Time-Varying Descriptor Systems. SIAM Journal on Matrix Analysis and Applications, 12(3), 484–496. https://doi.org/10.1137/0612035

Campbell, S. L., & Clark, K. D. (1990). Convergence of BDF approximations for nonsolvable differential algebraic equations. Applied Numerical Mathematics, 6(3), 153–158. https://doi.org/10.1016/0168-9274(90)90009-5

Campbell, S. L. (1990). Descriptor systems in the 1990s. 29th IEEE Conference on Decision and Control. Presented at the 29th IEEE Conference on Decision and Control. https://doi.org/10.1109/cdc.1990.203638

Campbell, S. L., & Yeomans, K. D. (1990). Solving Singular Systems Using Orthogonal Functions. IEE Proceedings D Control Theory and Applications, 137(4), 222. https://doi.org/10.1049/ip-d.1990.0027

Campbell, S. L. (1989). A computational method for general higher index nonlinear singular systems of differential equations. IMACS Transactions on Scientific Computing, 1(2), 555–560.

Campbell, S. L. (1989). Comments on functional reproducibility of time-varying input-output systems. IEEE Transactions on Automatic Control, 34(8), 922–924. https://doi.org/10.1109/9.29447

Campbell, S. L. (1989). Distributional convergence of BDF approximations to solutions of descriptor systems. Circuits, Systems, and Signal Processing, 8(3), 261–265. https://doi.org/10.1007/bf01598414

Campbell, S. L. (1989). The Numerical Solution of Singular Systems Arising in Control Problems. 1989 American Control Conference. Presented at the 1989 American Control Conference. https://doi.org/10.23919/acc.1989.4790540

Campbell, S. L. (1988). A general method for nonlinear descriptor systems: an example from robotic path control. Proceedings of the 27th IEEE Conference on Decision and Control. Presented at the 27th IEEE Conference on Decision and Control. https://doi.org/10.1109/cdc.1988.194386

Campbell, S. L. (1988). Bilinear nonlinear descriptor control systems in Linear Algebra in Signals, Systems, and Control. In B. N. Datta (Ed.), Linear algebra in signals, systems, and control : proceedings of the Conference on Linear Algebra in Signals, Systems, and Control, Boston, Massachusetts, August 12-14, 1986 (pp. 439–511). Philadelphia, PA: Society for Industrial and Applied Mathematics.

Campbell, S. L. (1988). Control problem structure and the numerical solution of linear singular systems. Mathematics of Control, Signals, and Systems, 1(1), 73–87. https://doi.org/10.1007/bf02551237

Campbell, S. L., & Clark, K. D. (1988). Singular control problem structure and the convergence of backward differentiation formulas. In C. I. Brynes, C. F. Martin, & R. E. Saeks (Eds.), Linear Circuits, Systems, and Signal Processing (pp. 19–26). North Holland.

Campbell, S. L. (1987). A General Form for Solvable Linear Time Varying Singular Systems of Differential Equations. SIAM Journal on Mathematical Analysis, 18(4), 1101–1115. https://doi.org/10.1137/0518081

Campbell, S. L. (1987). Comment on controlling generalized state-space (descriptor) systems. International Journal of Control, 46(6), 2229–2230. https://doi.org/10.1080/00207178708934045

Campbell, S. L., & Terrell, W. J. (1987). Derivative Arrays, Geometric Control Theory, and Realizations of Linear Descriptor Systems. https://doi.org/10.21236/ada190882

Distributional Convergence of BDF (Backward Differentiation Formulas) Approximations to Solutions of Descriptor Systems. (1987). Defense Technical Information Center. https://doi.org/10.21236/ada190819

Campbell, S. L. (1987). Local realizations of time varying descriptor systems. 26th IEEE Conference on Decision and Control. Presented at the 26th IEEE Conference on Decision and Control. https://doi.org/10.1109/cdc.1987.272582

Campbell, S. L. (1987). Operator methods and singular control problems. In S. J. Lee (Ed.), Operator Methods for Optimal Control Problems (pp. 57–66). New York: Marcel Dekker.

Campbell, S. L., & Yeomans, K. D. (1987). Solving Singular Systems Using Orthogonal Functions. In Defense Technical Information Center. https://doi.org/10.21236/ada190881

The Numerical and Analytic Analysis of Implicit Differential Equations and Their Application to Control and Circuit Problems. (1987). Defense Technical Information Center. https://doi.org/10.21236/ada185531

Campbell, S. L. (1986). Consistent initial conditions for linear time varying singular systems. In C. I. Byrnes & A. Lindquist (Eds.), Frequency Domain and State Space Methods for Linear Systems (pp. 313–318). Amsterdam: Elsevier.

Campbell, S. L. (1986). Countability of Sets. The American Mathematical Monthly, 93(6), 480–481. https://doi.org/10.1080/00029890.1986.11971864

Campbell, S. L. (1986). Index two linear time varying singular systems of differential equations. Circuits, Systems, and Signal Processing, 5(1), 97–107. https://doi.org/10.1007/bf01600189

Campbell, S. L. (1986). Progress Report Number 2 on Contract AFOSR-84-0240. https://doi.org/10.21236/ada172881

Campbell, S., & Rodriguez, J. (1985). Bounded solutions of discrete singular systems on infinite time intervals. IEEE Transactions on Automatic Control, 30(2), 165–168. https://doi.org/10.1109/tac.1985.1103905

Campbell, S. L. (1985). Rank deficient least squares and the numerical solution of linear singular implicit systems of differential equations. https://doi.org/10.1090/conm/047/828292

Campbell, S. L. (1985). The Numerical Solution of Higher Index Linear Time Varying Singular Systems of Differential Equations. SIAM Journal on Scientific and Statistical Computing, 6(2), 334–348. https://doi.org/10.1137/0906024

Campbell, S. L. (1984). Explicit methods for solving singular differential equation systems. Proceedings of the 27th Midwest Symposium on Circuits and Systems, 696–699.

Campbell, S. L. (1984). Non-BDF methods for the solution of time varying implicit differential equations. Proceedings of the 1984 American Control Conference, 21, 1315–1318. https://doi.org/10.1109/ACC.1984.4171500

Campbell, S. L., & Rodriguez, J. (1984). Nonlinear singular systems and contraction mappings. Proceedings of the 1984 American Control Conference, 21, 1513–1519. https://doi.org/10.1109/ACC.1984.4171540

Campbell, S. (1984). Nonlinear time-varying generalized state-space systems: An overview. The 23rd IEEE Conference on Decision and Control. Presented at the The 23rd IEEE Conference on Decision and Control. https://doi.org/10.1109/cdc.1984.272332

Campbell, S. L. (1984). On using orthogonal functions with singular systems. IEE Proceedings D-Control Theory & Applications, 131(6), 267–268.

Campbell, S. L. (1984). Regularizations of linear time varying singular systems. Automatica, 20(3), 365–370. https://doi.org/10.1016/0005-1098(84)90052-9

Campbell, S. L. (1984). Review of polynomials and linear control systems, by Stephen Barnett. Linear Algebra and Its Applications, 61, 289–290. https://doi.org/10.1016/0024-3795(84)90038-7

Campbell, S. L. (1984). The numerical solution of differential algebraic equation systems. All About Simulators, 14(1), 7–12.

Campbell, S. L., & Petzold, L. R. (1983). Canonical Forms and Solvable Singular Systems of Differential Equations. SIAM Journal on Algebraic Discrete Methods, 4(4), 517–521. https://doi.org/10.1137/0604051

Campbell, S. L. (1983). Consistent initial conditions for singular nonlinear systems. Circuits, Systems, and Signal Processing, 2(1), 45–55. https://doi.org/10.1007/bf01598143

Campbell, S. L. (1983). Index Two Linear Time-Varying Singular Systems of Differential Equations. SIAM Journal on Algebraic Discrete Methods, 4(2), 237–243. https://doi.org/10.1137/0604026

Barker, G. P., & Campbell, S. L. (1983). Internal stability of two dimensional systems. Linear and Multilinear Algebra, 14(4), 365–369. https://doi.org/10.1080/03081088308817572

Campbell, S. (1983). Multiparameter singular systems: Nondissective approaches. The 22nd IEEE Conference on Decision and Control. Presented at the The 22nd IEEE Conference on Decision and Control. https://doi.org/10.1109/cdc.1983.269733

Campbell, S. L. (1983). One canonical form for higher-index linear time-varying singular systems. Circuits, Systems, and Signal Processing, 2(3), 311–326. https://doi.org/10.1007/bf01599073

Campbell, S. L. (1983). Recent applications of generalized inverses. In Recent Applications of Generalized Inverses (pp. 1–11). Pitman.

Campbell, S. L. (1983). The Drazln inverse and systems of second order linear differential equations. Linear and Multilinear Algebra, 14(2), 195–198. https://doi.org/10.1080/03081088308817556

Campbell, S. L., & Rose, N. J. (1982). A second order singular linear system arising in electric power systems analysis†. International Journal of Systems Science, 13(1), 101–108. https://doi.org/10.1080/00207728208926334

Campbell, S. L. (1982). Nontrivial isometries on sp(α). International Journal of Mathematics and Mathematical Sciences, 5(2), 257–261. https://doi.org/10.1155/s0161171282000222

Campbell, S. L. (1982). On positive controllers and linear quadratic optimal control problems†. International Journal of Control, 36(5), 885–888. https://doi.org/10.1080/00207178208932938

Campbell, S. L. (1982). The Drazin inverse of an operator. In S. L. Campbell (Ed.), Recent Applications of Generalized Inverses. Pitman Publishing Company.

Campbell, S. (1981). A more singular singularly perturbed linear system. IEEE Transactions on Automatic Control, 26(2), 507–510. https://doi.org/10.1109/tac.1981.1102614

Campbell, S. L., & Silverstein, J. W. (1981). A nonlinear system with singular vector field near equilibria. Applicable Analysis, 12(1), 57–71. https://doi.org/10.1080/00036818108839348

Campbell, S. (1981). A procedure for analyzing a class of nonlinear semistate equations that arise in circuit and control problems. IEEE Transactions on Circuits and Systems, 28(3), 256–261. https://doi.org/10.1109/tcs.1981.1084966

Campbell, S. L., & Poole, G. D. (1981). Computing nonnegative rank factorizations. Linear Algebra and Its Applications, 35, 175–182. https://doi.org/10.1016/0024-3795(81)90272-x

Campbell, S. L., & Poole, G. D. (1981). Convergent regular splittings for nonnegative matrices. Linear and Multilinear Algebra, 10(1), 63–73. https://doi.org/10.1080/03081088108817393

Campbell, S. L. (1981). Numerical procedures for analyzing nonlinear semi-state equations. Proceedings Fifth International Symposium on the Mathematical Theory of Networks and Systems, 22–27.

Campbell, S. L. (1981). On an assumption guaranteeing boundary layer convergence of singularly perturbed systems. Automatica, 17(4), 645–646. https://doi.org/10.1016/0005-1098(81)90038-8

Campbell, S. L., & Clark, K. (1981). Order and the index of singular time-invariant linar systems. Systems & Control Letters, 1(2), 119–122. https://doi.org/10.1016/s0167-6911(81)80048-5

Campbell, S. L. (1980). Continuity of The Drazin inverse. Linear and Multilinear Algebra, 8(3), 265–268. https://doi.org/10.1080/03081088008817329

Campbell, S. L. (1980). Linear operators for which T*T and TT* commute III. Pacific Journal of Mathematics, 91(1), 39–45.

Campbell, S. L., & Faulkner, G. D. (1980). Operators on Banach spaces with complemented ranges. Acta Mathematica Academiae Scientiarum Hungaricae, 35(1-2), 123–128. https://doi.org/10.1007/bf01896831

Campbell, S. L. (1980). Singular linear systems of differential equations with delays. Applicable Analysis, 11(2), 129–136. https://doi.org/10.1080/00036818008839326

Campbell, S. L. (1979). A functional analytic approach to autonomous linear singular perturbation problems. Proceedings of the Seventeenth Annual Allerton Conference on Communication, Control, and Computing, 445–463.

Campbell, S. L., Faulkner, G. D., & Gardner, M. L. (1979). Isometries on L^p Spaces and Copies of L^p shifts. Proceedings of the American Mathematical Society, 77(2), 198–200. https://doi.org/10.2307/2042638

Campbell, S. L., Faulkner, G. D., & Sine, R. (1979). Isometries, projections and Wold decompositions. In I. Erdelyi (Ed.), Operator Theory and Functional Analysis (pp. 84–114). San Francisco, California: Pitman Publishing Company.

Campbell, S. L. (1979). Limit behavior of solutions of singular difference equations. Linear Algebra and Its Applications, 23, 167–178. https://doi.org/10.1016/0024-3795(79)90100-9

Campbell, S. L. (1979). Nonregular Singular Dynamic Leontief Systems. Econometrica, 47(6), 1565. https://doi.org/10.2307/1914020

Campbell, S. (1979). On a singularly perturbed autonomous linear control problem. IEEE Transactions on Automatic Control, 24(1), 115–117. https://doi.org/10.1109/tac.1979.1101951

Campbell, S. L., & Rose, N. J. (1979). Singular Perturbation of Autonomous Linear Systems. SIAM Journal on Mathematical Analysis, 10(3), 542–551. https://doi.org/10.1137/0510051

Campbell, S. L., & Daughtry, J. (1979). The stable solutions of quadratic matrix equations. Proceedings of the American Mathematical Society, 74(1), 19–23.

Campbell, S. (1978). Linear operators for which T∗T and T + T∗ commute. III. Pacific Journal of Mathematics, 76(1), 17–19. https://doi.org/10.2140/pjm.1978.76.17

Campbell, S. L., & Gupta, B. C. (1978). On k-quasihyponormal operators. Mathematica Japonica, 23, 185–189.

Campbell, S. L. (1978). On the limit of a product of matrix exponentials. Linear and Multilinear Algebra, 6(1), 55–59. https://doi.org/10.1080/03081087808817221

Campbell, S. L. (1978). Optimal control of discrete linear processes with quadratic cost. International Journal of Systems Science, 9(8), 841–847. https://doi.org/10.1080/00207727808941742

Campbell, S. L., & Rose, N. J. (1978). Singular perturbation of autonomous linear systems III. Houston Journal of Mathematics, 44, 527–539.

Campbell, S. L. (1978). Singular perturbation of autonomous linear systems, II. Journal of Differential Equations, 29(3), 362–373. https://doi.org/10.1016/0022-0396(78)90046-3

Campbell, S. L., & Meyer, C. D., Jr. (1978). Weak Drazin inverses. Linear Algebra and Its Applications, 20(2), 167–178. https://doi.org/10.1016/0024-3795(78)90048-4

Campbell, S. L. (1977). Linear Systems of Differential Equations with Singular Coefficients. SIAM Journal on Mathematical Analysis, 8(6), 1057–1066. https://doi.org/10.1137/0508081

Campbell, S. L., & Geller, R. (1977). Linear operators for which T*T and T+T* commute II. Transactions of the American Mathematical Society, 226, 305–319.

Campbell, S. L., & Gellar, R. (1977). On asymptotic properties of several classes of operators. Proceedings of the American Mathematical Society, 66(1), 79–84.

Campbell, S. L. (1977). On continuity of the Moore-Penrose and Drazin generalized inverses. Linear Algebra and Its Applications, 18(1), 53–57. https://doi.org/10.1016/0024-3795(77)90079-9

Campbell, S. L., Meyer, Jr., C. D., & Rose, N. J. (1976). Applications of the Drazin Inverse to Linear Systems of Differential Equations with Singular Constant Coefficients. SIAM Journal on Applied Mathematics, 31(3), 411–425. https://doi.org/10.1137/0131035

Campbell, S. L. (1976). Differentiation of the Drazin Inverse. SIAM Journal on Applied Mathematics, 30(4), 703–707. https://doi.org/10.1137/0130062

Campbell, S. L. (1976). Optimal Control of Autonomous Linear Processes with Singular Matrices in the Quadratic Cost Functional. SIAM Journal on Control and Optimization, 14(6), 1092–1106. https://doi.org/10.1137/0314068

Campbell, S. (1976). Optimal control of autonomous linear processes with singular matrices in the quadratic cost functional II. 1976 IEEE Conference on Decision and Control including the 15th Symposium on Adaptive Processes. Presented at the 1976 IEEE Conference on Decision and Control including the 15th Symposium on Adaptive Processes. https://doi.org/10.1109/cdc.1976.267733

Campbell, S. L., & Geller, R. (1976). Spectral properties of linear operators for which T*T and T + T* commute. Proceedings of the American Mathematical Society, 60(1), 197–202.

Campbell, S. L. (1976). The Drazin Inverse of an Infinite Matrix. SIAM Journal on Applied Mathematics, 31(3), 492–503. https://doi.org/10.1137/0131043

Campbell, S. L., & Meyer, C. D., Jr. (1975). Continuity properties of the Drazin pseudoinverse. Linear Algebra and Its Applications, 10(1), 77–83. https://doi.org/10.1016/0024-3795(75)90097-x

Campbell, S. L., & Meyer, C. D. (1975). EP Operators and Generalized Inverses. Canadian Mathematical Bulletin, 18(3), 327–333. https://doi.org/10.4153/cmb-1975-061-4

Campbell, S. (1975). Linear operators for which T∗T and T + T∗ commute. Pacific Journal of Mathematics, 61(1), 53–57. https://doi.org/10.2140/pjm.1975.61.53

Campbell, S. (1975). Operator-valued inner functions analytic on the closed disc. II. Pacific Journal of Mathematics, 60(2), 37–49. https://doi.org/10.2140/pjm.1975.60.37

Campbell, S. L. (1975). Subnormal operators with nontrivial quasinormal extensions. Acta Scientiarum Mathematicarum, 37(3-4), 191–193.

Campbell, S. L. (1974). Commutation properties of the coefficient matrix in the differential equation of an inner function. Proceedings of the American Mathematical Society, 42(2), 507–512.

Campbell, S. (1974). Linear operators for which T∗T and TT∗ commute. II. Pacific Journal of Mathematics, 53(2), 355–361. https://doi.org/10.2140/pjm.1974.53.355

Carmpbell, S. L. (1972). Inner functions analytic at a point. Illinois Journal of Mathematics, 16(4), 651–652. https://doi.org/10.1215/ijm/1256065547

Campbell, S. L. (1972). Linear operators for which T*T and TT* commute. Proc. American Mathematical Society, 34, 177–180.

Campbell, S. (1972). Operator-valued inner functions analytic on the closed disc. Pacific Journal of Mathematics, 41(1), 57–62. https://doi.org/10.2140/pjm.1972.41.57

Campbell, S. L. (1972). The exponential representation of operator valued, differentiable inner functions. Journal of Differential Equations, 12(3), 455–461. https://doi.org/10.1016/0022-0396(72)90018-6