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施耐德输出模块 TSXDSY08T22
PID调节器的数学表达式可以表示为:
u(t) = Kp * e(t) + Ki * ∫e(t)dt + Kd * de(t)/dt
其中,u(t)表示PID调节器的输出信号,e(t)表示控制偏差,Kp、Ki和Kd分别表示比例、积分和微分参数。控制偏差e(t)是被控量(如温度、压力等)的设定值与实际值之差,即:
e(t) = SP - PV
其中,SP表示设定值,PV表示实际值。
积分项和微分项的作用是对系统的持续偏差和瞬时偏差进行修正,可以通过积分项和微分项来提高系统的稳定性和精度。
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