LMIs in Control/page/systemzeros with feedthrough

From Wikibooks, open books for an open world
Jump to navigation Jump to search

Let's say we have a transfer function defined as a ratio of two polynomials: Zeros are the roots of N(s) (the numerator of the transfer function) obtained by setting and solving for s.The values of the poles and the zeros of a system determine whether the system is stable, and how well the system performs. Similarly, the system zeros are either real or appear in complex conjugate pairs. In the case of system zeros with feedthrough, we take as full rank.


The System[edit]

Consider a continuous-time LTI system, , with minimal statespace representation

The Data[edit]

The matrices needed as inputs are:

In this case,

The LMI: System Zeros with feedthrough[edit]

The transmission zeros of are the eigenvalues of . Therefore , is a minimum phase if and only if there exists , where such that

Conclusion:[edit]

If P exists, it ensures non-minimum phase. Eigenvalues of then gives the zeros of the system.

Related LMIs[edit]

LMIs_in_Controls/pages/systemzeroswithoutfeedthrough

Implementation[edit]

https://github.com/Ricky-10/coding107/blob/master/systemzeroswithfeedthrough

External Links[edit]

A list of references documenting and validating the LMI.

Return to Main Page:[edit]