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Title: Choice of controller zeros
Authors: Hang, C.C. 
Issue Date: Jan-1989
Citation: Hang, C.C. (1989-01). Choice of controller zeros. IEEE Control Systems Magazine 9 (1) : 72-75. ScholarBank@NUS Repository.
Abstract: The optimal choice of controller zeros is found to be vastly different for set-point and load-rejection responses. The positioning of the controller zeros near the slow process poles, though producing dramatic improvement in the speed of response for a set-point change, can be detrimental to load rejection. This result is used to explain the heuristics used in the Ziegler-Nichols tuning formula for proportional-integral-derivative controllers and in the positioning of controller zeros in pole-placement controllers and phase-lag compensators.
Source Title: IEEE Control Systems Magazine
ISSN: 08880611
Appears in Collections:Staff Publications

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