CONDITIONING TECHNIQUE FOR MULTIINPUT MULTIOUTPUT PROCESSES WITH INPUT SATURATION

Citation
Ks. Walgama et J. Sternby, CONDITIONING TECHNIQUE FOR MULTIINPUT MULTIOUTPUT PROCESSES WITH INPUT SATURATION, IEE proceedings. Part D. Control theory and applications, 140(4), 1993, pp. 231-241
Citations number
19
Categorie Soggetti
Instument & Instrumentation","Engineering, Eletrical & Electronic
ISSN journal
01437054
Volume
140
Issue
4
Year of publication
1993
Pages
231 - 241
Database
ISI
SICI code
0143-7054(1993)140:4<231:CTFMMP>2.0.ZU;2-C
Abstract
The problems of controller windup and directional change in controls, in controllers for multiinput multioutput processes with input saturat ion, is considered. To avoid the windup problem, a generalisation is p roposed for the conditioning technique based antiwindup compensator, b y introducing a filtered setpoint. This provides a parameterisation to deal with situations where the original conditioning technique was no t suitable. To reduce the effect of directional change in controls due to the multiple saturation, further modifications to the conditioning technique are proposed. An interesting outcome is that the generalise d antiwindup compensator due to Astrom and Wittenmark is interpreted i n terms of the conditioning technique; moreover, these interpretations are used to introduce modifications to their scheme in order to deal with the problem of directional change in controls.