Robust PID Parameter Tuning Method for Process Industry
In view of the difficulty in establishing the controlled object model of the single loop PID control system in the pro-cess industry and the difficulty in setting the controller parameters to meet the requirements of robustness and rapidity,a robust Top tuning method is proposed based on the time constant of the expected closed-loop transfer function of the system.Firstly,the approx-imate low order model of the system is obtained through open-loop step response experiment or closed-loop step response experi-ment.Then,the reference adjustment interval of Top parameters is given by using the robustness index Ms,and the default Top parameters are iteratively calculated by ITAE error performance method,and then the PID controller parameters of the model are calculated.Finally,the adjustment correction is made to the integral object to eliminate the residual error of the integral interfer-ence.The effectiveness of the Top tuning method is verified by the simulation experiment and the field actual loop adjustment.
process industryrobustnesserror performancePID tuning
万方数据
维普
