Title :
ℋ∞-suboptimal tracking control for bilinear power systems with dynamic feedback - theory and experiment
Author :
Schmidt, Bernd ; Reger, Johann
Author_Institution :
Control Eng. Group, Ilmenau Univ. of Technol., Ilmenau, Germany
Abstract :
In this contribution, a ℋ∞-controller as derived in is used for the tracking of a sufficiently smooth reference trajectory. The systems under investigation are bilinear SISO power systems with dynamic feedback. Two theorems are presented, when the conditions on time-varying iISS (integral input-to-state stability) and the suboptimality of the feedback control law are fulfilled along the overall error dynamics. For a Boost-Converter/DC-motor combination, a trajectory replanning strategy is devised in order to adapt online the reference trajectory using the estimated values of the disturbance from the load estimator. Experimental results on a laboratory setup support the suitability of the approach in practice.
Keywords :
DC motors; H∞ control; bilinear systems; feedback; power system control; time-varying systems; ℋ∞-suboptimal tracking control; bilinear SISO power systems; boost-converter/DC-motor combination; dynamic feedback; error dynamics; reference trajectory; time-varying integral input-to-state stability; trajectory replanning; Generators; Nonlinear systems; Power system dynamics; Power system stability; Shafts; Time varying systems; Trajectory;
Conference_Titel :
Control Applications (CCA), 2010 IEEE International Conference on
Conference_Location :
Yokohama
Print_ISBN :
978-1-4244-5362-7
Electronic_ISBN :
978-1-4244-5363-4
DOI :
10.1109/CCA.2010.5611227