摘要
利用状态平均法对具有感性负载Buck变换器进行建模。设计了一种具有增量式切换项的模糊滑模控制器,该控制器通过模糊控制实时调整滑模控制中的切换项系数,以减小抖振并保证系统的稳定性;通过增量式切换项克服传统滑模控制器中存在的稳态误差并降低系统对噪声的敏感度。仿真结果表明,针对感性负载Buck变换器,具有增量式切换项的模糊滑模控制器控制性能优于传统切换项模糊滑模控制器。利用所设计的控制器对超导磁体电源样机进行控制,实验结果证明了控制方法的有效性。
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.
作者
焦尚彬
张磊
刘丁
席振强
Jiao Shangbin;Zhang Lei;Liu Ding;Xi Zhenqiang(National&Local Joint Engineering Research Center of Crystal Growth Equipment and System Integration Xi’an University of Technology Xi’an 710048 China;Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing Xi’an 710048 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2018年第22期5311-5318,共8页
Transactions of China Electrotechnical Society
基金
国家自然科学基金重点项目(61533014)
陕西省重点研发计划(2017GY-030)资助
关键词
高频开关电源
模糊滑模控制
增量式切换项
超导磁体电源
High frequency switching power supply
fuzzy sliding mode control
incremental switch item
superconducting magnet power supply
