期刊
IEEE TRANSACTIONS ON EVOLUTIONARY COMPUTATION
卷 5, 期 1, 页码 78-82出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/4235.910467
关键词
disturbance rejection constraint; genetic algorithms; integral of the time weighted squared error performance index; optimization; PID controller
This paper presents a method to design an optimal disturbance rejection PID controller. First, a condition for disturbance rejection of a control system-H-infinity-norm-is described. Second, the design is formulated as a constrained optimization problem. It consists of minimizing a performance index, i.e., the integral of the time weighted squared error subject to the disturbance rejection constraint. A new method employing two genetic algorithms (GAs) is developed for solving the constraint optimization problem. The method is tested by a design example of a PID controller fur a servo-motor system. Simulation results are presented to demonstrate the performance and validity of the method.
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