Control Strategy of Networked Control System with Medium Access Constraints

Aiming at the problem of dynamic output feedback control for a class of networked control systems with medium access constraints and signal quantization, considering the influence of medium access constraints and signal quantization,a control strategy for networked control system with medium access constraints was proposed. the control output signal was quantized by logarithmic quantizer, and the quantization error was treated as sector bounded uncertainty. According to the random access mechanism of communication medium, the networked system was modeled as the discrete-time Markov jump system. In such a framework, the sufficient conditions of system stability were derived by means of Lyapunov stability theory and linear matrix inequality technique, and a dynamic output feedback controller was designed, which guarantees the networked systems asymptotically stable. Finally, a simulation example was given to verify the correctness and effectiveness of the proposed strategy.The results show that the controller designed in this paper can make the system reach stable status quickly, andhasgooddynamic performance.