Introduction to Control Engineering
Whenever energy is to be used purposefully, some form of control is necessary. In recent times there has been a considerable advance made in the art of automatic control. The art is, however, quite old, stemming back to about 1790 when James Watt invented the centrifugal governor1,2 to control the speed of his steam engines. He found that whilst in many applications an engine speed independent of load torque was necessary, in practice when a load was applied the speed fell and when the load was removed the speed increased.
KeywordsError Detector Engine Speed Load Torque Feedback Control System Orifice Plate
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