Tuning the motion control loop: minding your P's, I's, and D's.(proportional, integral, and differential)

From: Design News | Date: August 15, 2005| Author: Nachtwey, Peter | Copyright information

Control loops incorporating proportional, integral, and differential (P, I, and D) factors have become standard functions of motion controllers. Many of the latest controllers also offer feed-forward functions. A typical control loop might combine three PID gains and two feed forward gains. With such a system, the many gains must be juggled to make the system work properly. In hydraulic systems, for instance, separate gains should apply to each motion direction--that is, extending ...

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