Title :
Inherent design limitations for feedback systems with periodic digital controllers
Author :
Ortiz, David S. ; Freudenberg, James S. ; Middleton, Richard H.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
Abstract :
We show that design limitations due to non-minimum phase (NMP) zeros of an analog plant remain present in sampled-data feedback systems with periodic digital (PD) controllers. Furthermore, the action of the periodic controller induces harmonics within the baseband and increases differential sensitivity to plant variations
Keywords :
feedback; periodic control; poles and zeros; sampled data systems; sensitivity; stability; analog plant; design limitations; differential sensitivity; harmonics; nonminimum phase zeros; periodic digital controllers; sampled-data feedback systems; Australia; Baseband; Control systems; Digital control; Feedback; Frequency; PD control; Power harmonic filters; Sampling methods; Steady-state;
Conference_Titel :
Decision and Control, 1996., Proceedings of the 35th IEEE Conference on
Conference_Location :
Kobe
Print_ISBN :
0-7803-3590-2
DOI :
10.1109/CDC.1996.572668
