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D component – Burkert Type 8635 User Manual

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Characteristic and step response of the D component of a PID controller

D component

Function:

Y = Kd d Xd/dt

Kd is the differential action factor. The greater Kd, the stronger the D influence.

Characteristic

A controller with a D component reacts to changes in the controlled variable and can thus reduce more
quickly any control differences that occur.

Characteristic

Rise response