Quantized Feedback Control for Networked Control Systems Under Communication Constraints


  • Qing-Quan Liu School of Information Science and Engineering Shenyang Ligong University No. 6, Nan Ping Zhong Road, Hun Nan Xin District, Shenyang, 110159, China
  • Guang-Hong Yang College of Information Science and Engineering Northeastern University Shenyang, 110004, China


networked control systems (NCSs), quantized feedback control, communication constraints, feedback stabilization


This paper investigates the feedback stabilization problem for networked control systems (NCSs) with unbound process noise, where sensors and controllers are connected via noiseless digital channels carrying a finite number of bits per unit time. A sufficient condition for stabilization of NCSs, which relies on a variable-rate digital link used to transmit state measurements, is derived. A lower bound of data rates, above which there exists a quantization, coding and control scheme to guarantee both stabilization and a prescribed control performance of the unstable discrete-time plant, is presented. An illustrative example is given to demonstrate the effectiveness of the proposed method.


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