引言有一些系统,如容器和管道因受压有一定限度,因而不允许有较显著的超调。有时被调参数——如温度的超调还将引起不必要的付作用。如果被控制的积分对象的输入被限制在正值时,被调量从超调中恢复过来是不可能的。批量生产的混合控制系统可以认为属于这种类型。以上情况表明控制系统过程响应的超调量是很重要的。在许多系统中,考虑到它的稳定性;静态精度和负荷的调整能力,一般采用两作用的比例加积分(PI)调节器(图1)。这种调节器的增益可以调整到当给定值阶跃变化时,系统 Introduction Some systems, such as containers and pipes, have some limits due to compression and therefore do not allow for significant overshoot. Sometimes the parameters to be adjusted - such as temperature overshooting will also cause unnecessary pay-offs. If the input of the controlled integral object is limited to a positive value, it is not possible for the measured value to be recovered from the overshoot. Hybrid control systems in mass production can be considered as of this type. The above shows that it is important to overshoot the process control response of the control system. In many systems, two-acting proportional plus integral (PI) regulators are generally considered (Figure 1), given their stability, static accuracy and load regulation. The gain of this regulator can be tuned to the system when the reference step changes