HIMA F3322 内部求和产生新的单个误差值
在这种标准形式中，参数具有明确的物理意义。特别地，内部求和产生新的单个误差值，该误差值被补偿未来和过去的误差。比例误差项是电流误差。导数分量项试图预测的误差值为秒(或样本)，假设循环控制保持不变。积分元件调整误差值以补偿所有过去误差的总和，目的是在中完全消除它们秒(或样本)。然后，得到的补偿后的单个误差值被单个增益缩放计算控制变量。
在大多数商业控制系统中，微分作用是基于过程变量而不是误差。也就是说，设定值的变化不会影响微分作用。这是因为当设定点改变时，算法的数字化版本会产生大的不需要的尖峰。如果设定值恒定，那么PV的变化将与误差的变化相同。因此，这种修改对控制器响应过程扰动的方式没有影响。
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