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The closed-loop control system structure, in which the controller is provided with the information that allows the controller to know if the control system was disturbed by the set point change or not and enables it to operate with different parameters during the set point change response and the load disturbance response, has been presented. The proposed control system structure with the set point...
A procedure for tuning simultaneously the primary and secondary controllers of cascade control systems is proposed. The method is based on a single dynamic test (such as a step or pulse change in set point) conducted with both loops closed. Computation of the optimum controller settings from the resulting transients via frequency response is illustrated by means of a simulation example.
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