A New Objective Function for Controller Tuning
نویسندگان
چکیده
In this paper, a new objective function to tune the PID/PI-PD controller is proposed by modifying the integral error squared (ISE) criterion. A new entrant to the family of evolutionary algorithms namely bacterial foraging is used to find the controller parameters by minimizing the objective function. The controller gives a smooth process output with almost zero percent overshoot as desired in the control industry. Robustness is also ensured as the value of the maximum sensitivity lies between 1.3 and 2. A comparative study of the achievable performances of the PID/PI-PD controller is also done and the proposed tuning method is tested on non-minimum, integrating and higher order plant models to illustrate the effectiveness of the new objective function.
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