Journal of Shanghai Jiao Tong University ›› 2018, Vol. 52 ›› Issue (1): 120-126.doi: 10.16183/j.cnki.jsjtu.2018.01.018

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A Optimal Guaranteed Cost Control of Networked Multi-Rate System

WANG Zhiwen,LI Xuan,ZHU Chaoqun   

  1. College of Electrical and Information Engineering; Key Laboratory of Gansu Advanced Control for Industrial Processes; National Experimental Teaching Center of Electrical and Control Engineering, Lanzhou University of Technology, Lanzhou 730050, China
  • Published:2018-01-01

Abstract: In multi-rate networked control system (NCS), the sampling period of sensor, controller and actuator shows the characteristics of asynchronous sampling uniformity. The whole system is no longer a single-rate sampling mode, and it is more suitable for the essential characteristics of NCS and control requirements. A networked multi-rate input control system with network-induced time-delay and output prediction is illustrated in this paper. A dynamic output feedback controller is designed to obtain the optimal guaranteed cost control of the system, and the stability of this closed-loop control system is proved by linear matrix inequality (LMI) method. Finally, a numerical simulation is given to demonstrate the effectiveness of the proposed control system.

Key words: networked control system (NCS); multi-rate sampling; network-induced time-delay; output prediction; optimal guaranteed cost control

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