一、引言随着化工生产工艺的不断深入发展,出现了用现有常规仪表中的PID调节规律难以克服的扰动变量,提出了比以往更高的调节指标,而目前的PID作用又是不能达到的。诸如可测而不可控,变化频繁,波动幅值大的扰动;以及要求回复时间短、超调量小等等。寻求新的控制规律,以满足新工艺、高要求是势在必行的课题。采用扰动补偿——前馈控制,满足新的要求,是近年来从理论研究走向工业应用,正在我国开展的一项工作。 I. INTRODUCTION As the chemical production technology continues to develop, the disturbance variable that is difficult to overcome with the conventional PID control regulation has appeared, and a higher regulation index than ever before has come up. However, the current PID effect can not be achieved of. Such as measurable but not controllable, frequent changes, large fluctuations in the amplitude of the disturbance; and require a short response time, overshoot and so on. Seeking new rules of control to meet the new technology, high demand is an imperative subject. Using disturbance compensation - feedforward control to meet the new requirements, is a work carried out in our country from theoretical research to industrial applications in recent years.