二自由度PID内模主汽温控制

Main stream temperature control system based on two-degree-of-freedom IMC PID

基于内模控制理论,针对电厂主汽温被控对象的大惯性、大滞后特点,设计了一种二自由度PID控制系统。设计的二自由度PID控制器有两个调节参数,一个调整系统的位置跟随性能,另一个主要用来调整系统的干扰抑制特性和鲁棒性。对控制系统进行仿真试验,仿真结果表明设计的控制器具有良好的位置跟随性能、抗干扰性能和鲁棒性。

Based on the internal model control(IMC)principle, a two-degree-of-freedom(2DOF)PID Control system is presented. The controller has two adjustable parameters, one adjust the position tracking, the other adjust disturbances and robustness of the system. The simulation results show that the designed system has good position tracking, adaptability to overcome disturbances and robustness.