Research on Engineering Tuning Methods of PID Controller Parameters and Its Application

PID controller is widely used in the many industrial process control fields because of its simple algorithm, good robustness and high reliability. On the basis of the summary on the tuning process, the principle and the respective characteristics of Z-N frequency response method, Cohen-Coon method, Astrom-Hagglund method and CHR method, the simulation experiments are carried out on the three typical controlled objects. According to the simulation results, the advantages and disadvantages of four engineering tuning methods used for setting the PID controller parameters are analyzed and compared.