Quantized Feedback Control for Networked Control Systems Under Communication Constraints

Qing-Quan Liu, Guang-Hong Yang

Abstract


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.


Keywords


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

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References


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DOI: https://doi.org/10.15837/ijccc.2012.1.1425



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