Control System Synthesis: A Factorization Approach, Part II
Author:
- Mathukumalli VidyasagarMVMathukumalli Vidyasagar
- 20 June 2011
- journal article
- Published by Springer Nature in Synthesis Lectures on Controls and Mechatronics
- Vol. 2 (1) , 1-227
Abstract
This book introduces the so-called "stable factorization approach" to the synthesis of feedback controllers for linear control systems. The key to this approach is to view the multi-input, multi-output (MIMO) plant for which one wishes to design a controller as a matrix over the fraction field F associated with a commutative ring with identity, denoted by R, which also has no divisors of zero. In this setting, the set of single-input, single-output (SISO) stable control systems is precisely the ring R, while the set of stable MIMO control systems is the set of matrices whose elements all belong to R. The set of unstable, meaning not necessarily stable, control systems is then taken to be the field of fractions F associated with R in the SISO case, and the set of matrices with elements in F in the MIMO case. The central notion introduced in the book is that, in most situations of practical interest, every matrix P whose elements belong to F can be "factored" as a "ratio" of two matrices N,D whose ...Keywords
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