火电厂钢球磨煤机专家模糊PID解耦控制方法研究

针对钢球磨煤机(球磨机)制粉系统多变量、强耦合、非线性、大滞后的复杂控制对象难以建立准确的数学模型,以及常规PID解耦控制算法控制效果不理想等,提出了专家模糊PID解耦控制方法,该控制方法能够对PID参数进行实时整定,可适应球磨机制粉系统在不同工况下的控制要求。以略阳电厂球磨机制粉系统为对象,对球磨机专家模糊PID解耦控制系统进行了仿真验证。结果表明,该控制系统控制品质较好,能够适应球磨机制粉系统在不同工况下PID参数的实时调整,具有较好的控制效果,控制性能和鲁棒性均优于常规PID解耦控制。

STUDY ON EXPERT FUZZY PID DECOUPLING CONTROL METHOD FOR BALL MILLS IN THERMAL POWER PLANTS

Directing against the complex control object,i.e.ball mill coal-pulverizing system with multi-variables,strong coupling,non-linearity,and large time-delay etc.,it is difficult to establish an accurate mathematical model,as well as the effectiveness of conventional PID decoupling control algorithm isn't ideal,an expert fuzzy PID decoupling control method has been put forward.By using the said method,the real-time setting for PID parameters can be carried out,being suitable to requirements of control under di...