Stability and Stabilization of Linear Systems with Saturating Actuators, 2011

This monograph details basic concepts and tools fundamental for the analysis and synthesis of linear systems subject to actuator saturation and developments in recent research. The authors use a state-space approach and focus on stability analysis and the synthesis of stabilizing control laws in both local and global contexts. Different methods of modeling the saturation and behavior of the nonlinear closed-loop system are given special attention. Various kinds of Lyapunov functions are considered to present different stability conditions. Results arising from uncertain systems and treating performance in the presence of saturation are given. The text proposes methods and algorithms, based on the use of linear programming and linear matrix inequalities, for computing estimates of the basin of attraction and for designing control systems accounting for the control bounds and the possibility of saturation. They can be easily implemented with mathematical software packages.

Introduction.- Part I: Generalities.- Description of Systems Considered: Problem Statement.- Robust Stabilization under Control Constraints: An Overview.- Part II: Stability Analysis and Stabilization.- Analysis via the Use of Polytopic Models.- Synthesis via the Polytopic Model.- Analysis via the Use of Sector Nonlinearities Model.- Analysis via the Saturation Regions Model.- Part III: Anti-windup.- An Overview on Anti-windup Techniques.- Anti-windup Compensators Synthesis.- Appendices: Fundamental Properties on Stability Theory.- Fundamental Properties on Robust Control.- Mathematical Tools.

Gives the reader an in-depth understanding of the phenomena caused by the more-or-less ubiquitous problem of actuator saturation. Proposes methods and algorithms designed to avoid, manage or overcome the effects of actuator saturation. Uses a state-space approach to ensure local and global stability of the systems considered. Compilation of fifteen years’ worth of research results. Includes supplementary material: sn.pub/extras