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| Fuzzy Sliding Mode Control of High Frequency Switching Power Supply Based on Incremental Switch Item |
| Jiao Shangbin1, 2, Zhang Lei1, Liu Ding1, 2, Xi Zhenqiang1 |
1. National & Local Joint Engineering Research Center of Crystal Growth Equipment and System Integration Xi'an University of Technology Xi'an 710048 China;
2. Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing Xi'an 710048 China |
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Abstract In this paper, the state averaging method is used to model the Buck switching converter with inductive load. A fuzzy sliding mode controller with incremental switch item is designed. The switching coefficient of sliding mode control is adjusted to reduce the chattering and ensure system stability by fuzzy control in real time. The incremental switch item is used to eliminate the steady-state error of the traditional sliding mode controller and reduce system sensitivity to noise. The simulation results show that the fuzzy sliding mode controller with incremental switch item is better than that with traditional switch item for inductive load Buck switching converter. The power supply of the superconducting magnet is controlled by the designed controller, and the experimental results prove the effectiveness of the proposed method.
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Received: 04 September 2017
Published: 27 November 2018
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2018, Vol. 33 
