采用微分先行PID控制实现对液位的控制采用增量式PI控制实现流量的快速跟踪且波动范围较采用经验方法分别对上述两个PID控制器参数进行整定。-Of liquid level control is realized by using derivative ahead PID control flow is realized by using incremental PI control of the fast track and the fluctuation range respectively than by empirical method for the above two PID controller parameter setting.