The complex structured singular value

A unified framework for the study of anti-windup designs

The authors present a tutorial overview of linear fractional transformations (LFTs) and the role of the structured singular value, mu , and linear matrix inequalities (LMIs) in solving LFT problems. The authors first introduce the notation for LFTs and briefly discuss some of their properties. They then describe mu and its connections with LFTs. They focus on two standard notions of robust stability and performance, mu stability and performance and Q stability and performance, and their relationship is discussed. Comparisons with the L/sub 1/ theory of robust performance with structured uncertainty are considered. >

Review of LFTs, LMIs, and mu

Robust control of processes subject to saturation nonlinearities

This paper considers control design for systems with input magnitude saturation Four examples, 2 SISO and 2 MIMO, are used to illustrate the properties of several existing schemes A new method based on a modification of conventional antiwindup compensation is introduced It is assumed that the reader is familiar with the problem of integral windup for saturating plants and conventional schemes for dealing with it

Packard

Papers

Uncertain multivariable systems from a state space perspective