Parameters tuning for primary controller of steam generator level control system based on H∞ loop shaping method

In view of difficulty of PID parameters tuning for feed-forward and feed-back three elements level control system of U-type steam generator, and high requirement of control system robustness, PID parameters tuning for primary controller was given based on H∞ loop shaping method. Comparison simulations were made between PID parameters set by traditional methods and set by H∞ loop shaping approach. Simulation results show that the control system tuned by this method has good control performance and robust stability. (authors)