基于内模PID控制的火电厂主汽温控制系统

Main Steam Temperature Control System Based on 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 ,设计了内模PID串级控制系统。为了快速消除内扰 ,使控制过程的的持续时间较短 ,内回路采用比例控制 ;外回路采用内模控制 ,以有效地补偿对象的大滞后特性。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。

The main-steam temperature is a large-inertial and blargeig-lagged plant, An internal model control PID Control system is presented in this paper The inner loop is used to overcome the disturbances and the outer loop is used to compensate time—delay of object.The simulation Results show that the designed system has good position tracking property、adaptability to overcome disturbances and robustness.