Title :
Reduced-size LFT closed-loop modeling of decomposable systems with simplified controller synthesis
Author :
Eichler, A. ; Hoffmann, Christian ; Werner, Herbert
Author_Institution :
Inst. of Control Syst., Hamburg Univ. of Technol., Hamburg, Germany
Abstract :
Recently, distributed robust output feedback control synthesis has been considered for a subclass of interconnected linear parameter-varying (LPV) systems, referred to as decomposable systems. In the synthesis procedure, the interconnection and the LPV uncertainty are described as linear fractional transformations (LFTs), and conditions derived by the full block S-procedure are solved iteratively. Here different approaches are presented to reduce the size of the LFT channels and thus the number of variables in the synthesis. Furthermore, an alternative synthesis procedure is presented, which in contrast to previously reported results avoids the inversion of multipliers.
Keywords :
closed loop systems; control system synthesis; distributed parameter systems; feedback; interconnected systems; iterative methods; nonlinear control systems; robust control; uncertain systems; LFT channels; block S-procedure; decomposable systems; distributed robust output feedback control synthesis; interconnected linear parameter-varying systems; linear fractional transformations; reduced-size LFT closed-loop modeling; Bismuth; Closed loop systems; Data structures; Matrix decomposition; Robustness; Topology; Uncertainty; Agents-based systems; Robust control;
Conference_Titel :
American Control Conference (ACC), 2014
Conference_Location :
Portland, OR
Print_ISBN :
978-1-4799-3272-6
DOI :
10.1109/ACC.2014.6859008