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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2008, Vol. 9 Issue (8): 1024-1033    DOI: 10.1631/jzus.A0720031
Electrical & Electronic Engineering     
Suboptimal reliable guaranteed cost control for continuous-time systems with multi-criterion constraints
Deng-feng ZHANG, Hong-ye SU, Jian CHU, Zhi-quan WANG
Institute of Advanced Process Control, Zhejiang University, Hangzhou 310027, China; School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China
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Abstract  The suboptimal reliable guaranteed cost control (RGCC) with multi-criterion constraints is investigated for a class of uncertain continuous-time systems with sensor faults. A fault model in sensors, which considers outage or partial degradation of sensors, is adopted. The influence of the disturbance on the quadratic stability of the closed-loop systems is analyzed. The reliable state-feedback controller is developed by a linear matrix inequalities (LMIs) approach, to minimize the upper bound of a quadratic cost function under the conditions that all the closed-loop poles be placed in a specified disk, and that the prescribed level of H∞ disturbance attenuation and the upper bound constraints of control inputs’ magnitudes be guaranteed. Thus, with the above multi-criterion constraints, the resulting closed-loop system can provide satisfactory stability, transient property, a disturbance rejection level and minimized quadratic cost performance despite possible sensor faults.

Key words： Sensor faults      Multi-criterion constraints      Reliable guaranteed cost control (RGCC)      Linear matrix inequality (LMI)     
Received: 19 October 2007     
CLC:  TP13  
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Deng-feng ZHANG
Hong-ye SU
Jian CHU
Zhi-quan WANG
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Deng-feng ZHANG, Hong-ye SU, Jian CHU, Zhi-quan WANG. Suboptimal reliable guaranteed cost control for continuous-time systems with multi-criterion constraints. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2008, 9(8): 1024-1033.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A0720031     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2008/V9/I8/1024

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