2016 journal article

Robust H-2 and H-infinity switched feedforward control of uncertain LFT systems

INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL, 26(9), 1841–1856.

By: C. Yuan n & F. Wu n

co-author countries: United States of America 🇺🇸
author keywords: robust feedforward control; switching control; uncertain LFT systems; H-2 and H-infinity performance
Source: Web Of Science
Added: August 6, 2018

This paper presents a new robust switched feedforward control scheme for a class of uncertain systems described in a standard linear fractional transformation form. First, the analysis conditions for switching stability are derived by using a piecewise Lyapunov function incorporated with the min-switching control technique. Based on the analysis results, the synthesis conditions are then formulated as a special type of bilinear matrix inequalities, which can be solved by means of linear matrix inequalities and line search. Both robust and feedforward control problems are considered. The proposed robust switched control scheme outperforms existing robust feedforward control approaches for uncertain systems based on single quadratic Lyapunov function, and leads to less conservative control design. Numerical examples will be used to illustrate the effectiveness and advantages of the proposed results. Copyright © 2015 John Wiley & Sons, Ltd.