Abstract
In the magnetic resonance imaging pulse power system, due to the coupling and non-linearity of the load coil itself, it is difficult to achieve satisfactory control results in terms of output current accuracy and dynamic response speed under the traditional PI control method. In this paper, a variable-domain fuzzy PID control strategy is proposed on the basis of state feedback to improve the dynamic response speed and steady-state error of the output current by using variable-domain fuzzy control to achieve self-tuning of control parameters and self-adjustment of control rules. 500 A/1500 V Simlink simulation and prototype experiments verify that the proposed algorithm has faster dynamic response speed and smaller steady-state error. The proposed algorithm can meet the requirements of large current variation rate and high steady-state accuracy of magnetic resonance pulse power supply.
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Huang, H., He, C., Wang, H. (2023). Variable-Domain Fuzzy PID Control Strategy for Magnetic Resonance Pulsed Power Supplies. In: Li, J., **e, K., Hu, J., Yang, Q. (eds) The Proceedings of the 17th Annual Conference of China Electrotechnical Society. ACCES 2022. Lecture Notes in Electrical Engineering, vol 1013. Springer, Singapore. https://doi.org/10.1007/978-981-99-0451-8_121
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DOI: https://doi.org/10.1007/978-981-99-0451-8_121
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