26 January 2016 Mutation particle swarm optimization of the BP-PID controller for piezoelectric ceramics
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Proceedings Volume 9903, Seventh International Symposium on Precision Mechanical Measurements; 990322 (2016) https://doi.org/10.1117/12.2214337
Event: Seventh International Symposium on Precision Mechanical Measurements, 2015, Xia'men, China
Abstract
PID control is the most common used method in industrial control because its structure is simple and it is easy to implement. PID controller has good control effect, now it has been widely used. However, PID method has a few limitations. The overshoot of the PID controller is very big. The adjustment time is long. When the parameters of controlled plant are changing over time, the parameters of controller could hardly change automatically to adjust to changing environment. Thus, it can’t meet the demand of control quality in the process of controlling piezoelectric ceramic. In order to effectively control the piezoelectric ceramic and improve the control accuracy, this paper replaced the learning algorithm of the BP with the mutation particle swarm optimization algorithm(MPSO) on the process of the parameters setting of BP-PID. That designed a better self-adaptive controller which is combing the BP neural network based on mutation particle swarm optimization with the conventional PID control theory. This combination is called the MPSO-BP-PID. In the mechanism of the MPSO, the mutation operation is carried out with the fitness variance and the global best fitness value as the standard. That can overcome the precocious of the PSO and strengthen its global search ability. As a result, the MPSO-BP-PID can complete controlling the controlled plant with higher speed and accuracy. Therefore, the MPSO-BP-PID is applied to the piezoelectric ceramic. It can effectively overcome the hysteresis, nonlinearity of the piezoelectric ceramic. In the experiment, compared with BP-PID and PSO-BP-PID, it proved that MPSO is effective and the MPSO-BP-PID has stronger adaptability and robustness.
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Huaqing ZHENG, Huaqing ZHENG, Minlan Jiang, Minlan Jiang, } "Mutation particle swarm optimization of the BP-PID controller for piezoelectric ceramics", Proc. SPIE 9903, Seventh International Symposium on Precision Mechanical Measurements, 990322 (26 January 2016); doi: 10.1117/12.2214337; https://doi.org/10.1117/12.2214337
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