基于无模型自适应控制的主汽温控制系统

Main Steam Temperature Control System Based on MFAC

基于MFAC(无模型自适应控制)理论,针对电厂主汽温被控对象的大惯性、大滞后特点,充分发挥PID抗干扰性强和MFAC对惯性、延迟适应能力强的优点设计了MFAC -PID控制系统。仿真研究表明,该方法的控制效果优于常规的PID控制,能适应对象参数的变化并表现出良好的控制品质,具有较强的鲁棒性和自适应能力。

The main steam temperature control system has large time constant, long time-delay in thermal power plants. MFAC- PID cascade control system based on the model free adaptive control theory is presented. It takes the advantages of the strong anti-jamming ability of PID and the good adaptability to inert and delay of MFAC. Simulation results show that this strategy can adapt the changing of the parameters of the object and have good control performance compared with PID control. It has strong robustness and self-adaptive ability.