342A4922P28V500DH
输出信号与偏差信号的变化速度成正比。这种调节器使用在系统中，即使偏差很小，但只要出现变化趋势，即可马上进行调节。故有“超前”调节之称。但他的输出只能反映偏差信号的变化速度，不能反映偏差的大小，调节结果也不能消除偏差，所以不能单独使用这种调节器。他必须常与比例或积分调节规律组合构成PD或PID调节器。
The output signal is proportional to the rate of change of the deviation signal. This kind of regulator is used in the system, even if the deviation is small, as long as there is a change trend, it can be adjusted immediately. Therefore, it is called “advance” adjustment. However, its output can only reflect the change speed of the deviation signal, not the magnitude of the deviation, and the adjustment result cannot eliminate the deviation, so this kind of regulator cannot be used alone. It must often be combined with proportional or integral regulation laws to form PD or PID regulators.
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