Print Email Facebook Twitter Frequency-domain optimization of fixed-structure controllers Title Frequency-domain optimization of fixed-structure controllers Author van Solingen, E. (TU Delft Team Raf Van de Plas) van Wingerden, J.W. (TU Delft Team Raf Van de Plas) Oomen, T. (Eindhoven University of Technology) Date 2016 Abstract 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. Subject Decentralized controlFixed-structure controlFrequency-domain H∞ controller designGrey-box system identificationNyquist stability criterion To reference this document use: http://resolver.tudelft.nl/uuid:2dcfc112-e91a-4275-848a-61130c76aa75 DOI https://doi.org/10.1002/rnc.3699 ISSN 1049-8923 Source International Journal of Robust and Nonlinear Control, 28 (2018) (12), 3784-3805 Part of collection Institutional Repository Document type journal article Rights © 2016 E. van Solingen, J.W. van Wingerden, T. Oomen Files PDF Solingen_et_al_2016_Inter ... ontrol.pdf 2.52 MB Close viewer /islandora/object/uuid:2dcfc112-e91a-4275-848a-61130c76aa75/datastream/OBJ/view