Title :
Another reason to eschew pole-zero cancellation
Author :
Clark, Robert N.
Author_Institution :
Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA
fDate :
4/1/1988 12:00:00 AM
Abstract :
It is shown that, if series compensation by pole-zero cancellation is used in a system that is linear for small signals but has a large signal nonlinearity in the loop, then an observable mode, corresponding to the cancelled pole, appears in the system response when large transient signals occur in the loop. An example in which the nonlinear element is a saturating device is used to illustrate the point being made.<>
Keywords :
compensation; control nonlinearities; poles and zeros; large signal nonlinearity; observable mode; pole-zero cancellation; saturating device; series compensation; Aerodynamics; Computational modeling; Computer simulation; Eigenvalues and eigenfunctions; Feedback control; Gain; Noise cancellation; Nonlinear dynamical systems; Poles and zeros; Transfer functions;
Journal_Title :
Control Systems Magazine, IEEE
