Reliable decentralised stabilisation of multi-channel systems: a design method via dilated LMIs and unknown disturbance observers |
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Authors: | Yasumasa Fujisaki Getachew K Befekadu |
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Affiliation: | 1. Department of Computer Science and Systems Engineering , Kobe University Nada , Kobe 657-8501, Japan fujisaki@cs.kobe-u.ac.jp;3. Lombardi Comprehensive Cancer Center , Georgetown University , 176 Building D, 4000 Reservoir Rd, NW, Washington, DC 20057, USA |
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Abstract: | Reliable decentralised stabilisation is considered for general multi-channel plants, where the objective is to maintain stability of the closed-loop system when all of decentralised controllers work together and when one of the controllers is extracted due to a failure. For this control problem, a design method is presented, where a dilated LMI technique is employed for deriving reliable state feedback design, while a version of unknown disturbance observer is used as a decentralised observer for extending the design to output feedback case. Applicability of the proposed method is demonstrated through a power system example, where a model reduction and a low pass filter are further employed. |
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Keywords: | reliable control decentralised control stabilisation dilated LMI unknown disturbance observer |
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