Controller Tuning Method by Shaping Its Output Step Response
Paper presents new method of PID controller tuning, focusing on controller output stability, in opposite to standard error minimization. Presented algorithm precisely calculate PID controller parameters by giving on its input the estimated linear model of the system, and desired time constant of the first order model step response, from the process disturbance input to the controller output. Thanks to this method stable controller output value can be achieved in a minimum amount of time. In addition, an example of the algorithm execution for identified model of a real system was shown. Unfortunately, at this moment algorithmic controller tuning work only for second order non-oscillating model of process and first order model of step response. In the future it is planned to extend this method on processes described by means of other transfer functions.
Keywordscontrol system PID tuning stable output process control feedback control
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