View source for Does pole zero cancellation happen and is it useful?

It is generally a bad idea to cancel unstable poles or zeros because for this to work it would need to be exact; for real systems, we almost never know exactly where a pole or zero is because our model can never be good enough.  However, for robust performance considerations, it is sometimes useful to cancel a stable pole or zero.  Chapter 12 of Astrom and Murray talks more about this.

--[[User:Braman|Julia Braman]] 19:03, 3 November 2008 (PST)

[[Category: CDS 101/110 FAQ - Lecture 6-1]]
[[Category: CDS 101/110 FAQ - Lecture 6-1, Fall 2008]]