Observer design for networked control systems

This paper deals with the state observer design problem for a networked control linear system. First, based on a functional transformation to the system output, the networked control system with both network transmission delays of controller-to-actuator and sensor-to-controller was transformed into an equivalent system with only delayed control inputs. Then, by using the transformed system, a state observer for the original networked control system is designed. The design algorithm is proposed and the state estimate accuracy of the state observer is analyzed. Theoretical derivation indicates the state observation error can tend to zero at any decay rate specified in advance. Simulation results show the effectiveness of the proposed design approach.

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