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The basics of control system design: Tuning a controller (2)

Posted: 27 Apr 2008  Print Version  Bookmark and Share Subscribe

Keywords: proportional controller  DC stiffness  PI controller  DC error 

[Summary of tips] The primary shortcoming of the P controller, tolerance of DC error, is readily corrected by adding an integral gain to the control law. This is why PI control is more preferred over P control.With PI control, the P gain provides similar operation to that in the P controller, and the I gain provides DC stiffness.However, the PI ......
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