ISA 的优点在于调节 Kc 时,同时改变比例,积分和微分项,这可能使调节更简单。如果你已经有 PID 增益值或者已经有 Ti 和 Td,使用 Kp = Kc Ki = Kc/Ti and Kd = Kc/Td 将它们转换为 PID 用户参数。 CV 偏差项是 PID 各个部分之外的附加项。如果只使用比例项,并且 PV=SP,ERROR=0,但是又不想令 CV 等于 0 时,你可能需要使用这一项。这种情况 下,当 PV=SP 时,为 CV 设定一个期望的偏差值。
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