This paper aims to introduce a new approach to optimize the tunable controller parameters of linear parameterizable controllers. The presented approach is frequency-domain based and can therefore directly be used to tune, among others, proportional integral derivative controllers, low/high-pass filters, and notch filters, using a Frequency Response Function of the plant. The approach taken in this paper is to extract the tunable controller parameters into a diagonal matrix gain and absorb the remainder of the controller in the plant. Then, the generalized Nyquist stability criterion is exploited so as to impose stability and H∞ performance specifications on the closed-loop system. It is shown that the approach results in a convex feasibility problem for certain controller cases and can be reformulated such that it can also be used for grey-box system identification. Simulation and experimental examples demonstrate the efficacy of the approach.
Frequency-domain optimization of fixed-structure controllers
2018-08-01
van Solingen , E , van Wingerden , J W & Oomen , T A E 2018 , ' Frequency-domain optimization of fixed-structure controllers ' , International Journal of Robust and Nonlinear Control , vol. 28 , no. 12 , pp. 3784-3805 . https://doi.org/10.1002/rnc.3699
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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