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Parameter tuning of PID controller and its application in inverter control
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In order to solve the problem that it is difficult to get the optimal tuning parameters by using the normalized parameter method and trial and error method, a fast and effective PI controller parameter tuning method based on four-dimensional data visualization algorithm is proposed. Using visualization method, Bode graph cluster is embodied in four-dimensional visualization amplitude frequency characteristic diagram and phase frequency characteristic diagram, which can directly observe the relationship between KP, Ki and amplitude frequency characteristic and phase frequency characteristic. In this method, the amplitude margin and phase margin can be indirectly expressed in the frequency domain characteristics, and the purpose of setting can be achieved by observing the changes of frequency domain characteristics. The simulation example shows that the method is suitable for low order or high order plant, and the satisfactory effect is obtained. The step response verifies the correctness of the method.
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Matlab implementation of particle swarm optimization
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Continuous standard particle swarm optimization algorithm matlab implementation, including the test function.
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