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Stability Properties and Effects of Measurement Disturbances on Antiwindup PI- and PID-Control

Author(s):

A.H. Glattfelder, J. Tödtli, W. Schaufelberger
Conference/Journal:

European Journal of Control, vol. 6, no. 5, pp. 435-448
Abstract:

Different forms of discrete time controllers with integral action, control signal saturation, and antiwindup feedback (i.e. PIaw, PIawD, PIaw-P cascade, I-aw with observer based feedback) are investigated. It is shown, that high gain anti windup is not required and that low anti windup gain does not significantly diminish the stability properties as long as it is not lower than a given threshold. Results are given for the steady state control error offset induced by stationary high frequency measurement disturbances while operating the control loop close to the saturation. It is demonstrated that a derivative action should be avoided in this context, and how it can be replaced by other better performing structures. It is also shown how the effect of the high frequency disturbance may be furtherreduced by appropriate observer based feedback.

Year:

2001
Type of Publication:

(01)Article
Supervisor:



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% Autogenerated BibTeX entry
@Article { GlaT_d:2001:IFA_1691,
    author={A.H. Glattfelder and J. T{\"o}dtli and W. Schaufelberger},
    title={{Stability Properties and Effects of Measurement
	  Disturbances on Antiwindup PI- and PID-Control}},
    journal={European Journal of Control},
    year={2001},
    volume={6},
    number={5},
    pages={435--448},
    month=may,
    url={http://control.ee.ethz.ch/index.cgi?page=publications;action=details;id=1691}
}
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