[1]YAN Jiazheng,ZHUAN Xiangtao.Parameter self-tuning and optimization algorithm based on reinforcement learning[J].CAAI Transactions on Intelligent Systems,2022,17(2):341-347.[doi:10.11992/tis.202012038]
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CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume:
17
Number of periods:
2022 2
Page number:
341-347
Column:
学术论文—智能系统
Public date:
2022-03-05
- Title:
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Parameter self-tuning and optimization algorithm based on reinforcement learning
- Author(s):
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YAN Jiazheng1; ZHUAN Xiangtao1; 2
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1. School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China;
2. Shenzhen Research Institute, Wuhan University, Shenzhen 518057, China
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- Keywords:
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reinforcement learning; tuning; optimization; learning algorithm; time delay; controller; level control; dynamic response
- CLC:
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TP273
- DOI:
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10.11992/tis.202012038
- Abstract:
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To achieve better control performance in the nonlinear time-delay system, the traditional Proportional-Integral-Derivative (PID) control algorithm requires tuning and optimization, which complicates the controller design. First, we propose a new self-tuning and optimization algorithm for controller parameters based on reinforcement learning. Then, a reward function based on the system dynamic performance index is introduced by this algorithm. This function can learn the empirical data of periodic step response and realize the online optimization of controller parameters without identifying the model data of the controlled object. Finally, the algorithm is tested through experiments on a water tank level control system with different types of PID controllers. Experimental results show that, in contrast to the traditional parameter tuning method, the manual process is eliminated by the proposed algorithm, effectively optimizing the controller parameters, reducing the overshoot of the controlled quantity, and improving the dynamic response performance of the controller.