描述
PID控制回路有两个输入量,即给定量和过程变量,在实际控制问题中,它们的取值范围和测量单位可能不一致,因此,在进行PID运算前,必须将工程实际值标准化,即转换为无量钢相对值格式。在对模拟量进行PID运算后,对输出生产的控制作用是在[0.0~1]范围的标准化值,为了能够驱动实际的驱动装置必须将其转换成工程实际值。
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