Close loop step test used for tuning PID controller by genetic algorithms
Resumen
The identification of multiple points on the process frequency response from a single step feedback test is used. These identified points are there employed to design a PID controller using the multiple-point fifting controller design method. The PID controller is design by minimizing the error between the actual and desired close-loop response in a certain frequency region. The control problem is stated as a nonlinear least squares unconstrained minimization problem. The optimization problem is solved with a simple
genetic algorithm.
Keywords: FFT, genetic algorithm, nonlinear least squares optimization, PID
controller.
Texto completo:
81-98 PDFReferencias
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