Simulation for a class of networked cascade control systems by PID control

The simulation for a class of networked cascade control systems by PID control is investigated in this paper. Cascade control system, wherein the control loops are closed via real-time networks, is named networked cascade control system(NCCS for short). The configuration for a class of NCCSs is presented and the locations of the networks inserted into the control loops are pointed out. Discrete time PID control method and fuzzy PID control method are both introduced. A comprehensive performance index, is proposed to evaluate and compare the performance of the NCCS. The simulation of conventional PID control method and fuzzy self-tuning PID control methods in the NCCS are implemented based on MATLAB/Simulink and TrueTime toolbox. The effectiveness of the fuzzy self-tuning PID control method and its superiority over the conventional PID control method is verified.