Abstract
This paper is concerned with the output feedback passification of switched continuous-time linear systems with actuation saturation. A switching law and saturated output feedback controllers with the form of quasi-linear parameter-varying are designed such that the closed-loop switched system with actuator saturation is passive, and the system state remains inside an invariant ellipsoid, which meet the requirements of passivity and saturation simultaneously. Since the system state is often unavailable, we consider the issue of how to design dynamic output feedback controllers using only partial state measurements. Moreover, the switching law is designed to depend only on the state of the dynamic output feedback controllers, which renders the switched system passivity even the subsystems are non-feedback passive. Sufficient conditions for the existence of the switching and output feedback control law are derived in terms of linear matrix inequalities. Finally, a numerical example is given to show the effectiveness of the proposed method.
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This work was supported by the National Natural Science Foundation of China under Grants 61304058 and 61233002, and IAPI Fundamental Research Funds under Grant 2013ZCX03-01, Fundamental Research Funds for the Central Universities under Grant N130604003.
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Zhao, XQ., Zhao, J. Output Feedback Passification of Switched Continuous-Time Linear Systems Subject to Saturating Actuators. Circuits Syst Signal Process 34, 1343–1361 (2015). https://doi.org/10.1007/s00034-014-9903-5
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DOI: https://doi.org/10.1007/s00034-014-9903-5