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基于扩展状态观测器的Boost变换器控制策略研究

时国平,钱叶册,孙佐,汪凯   

  1. 池州学院,池州 247000
  • 出版日期:2019-03-25 发布日期:2019-06-21

时国平,钱叶册,孙佐,汪凯. 基于扩展状态观测器的Boost变换器控制策略研究[J]. 系统科学与数学, 2019, 39(3): 449-458.

SHI Guoping, QIAN Yece, SUN Zuo, WANG Kai. Research on Control Strategy of Boost Converter Based on Extended State Observer[J]. Journal of Systems Science and Mathematical Sciences, 2019, 39(3): 449-458.

Research on Control Strategy of Boost Converter Based on Extended State Observer

SHI Guoping, QIAN Yece, SUN Zuo, WANG Kai   

  1. Chizhou University, Chizhou 247000
  • Online:2019-03-25 Published:2019-06-21

摘要内容针对Boost变换器系统在受到外部扰动时其动态性能不是很理想的问题, 提出一种基于扩展状态观测器的Boost变换器控制策略. 建立了变换器控制系统的数学模型, 通过扩展状态观测器观测负载电流和输入电压变化引起的系统扰动, 来估计和补偿输出电压的变化, 并引入PD模糊逻辑控制器进一步改善了系统动态性能. 该策略不依赖于控制系统数学模型和其具体参数, 能精确估计系统的扰动和在线补偿负荷电流和输入电压的变化. 进行了仿真和实验验证,结果表明了所提控制策略的有效性.

In order to solve the problem that the dynamic performance of Boost converter is not very ideal when it is disturbed by external disturbance, a control strategy of Boost converter based on extended state observer is proposed. The mathematical model of the converter control system is established. Observing the disturbance caused by the load current and the change of input voltage, the change of the output voltage is estimated and compensated by the extended state observer, and the PD fuzzy logic controller is introduced to improve the dynamic performance of the system. It can accurately estimate the disturbance of the system and compensate for the variation of load current and input voltage online through the strategy, which does not depend on the mathematical model of the control system and the specific parameters. Simulation and experimental results show that the proposed control strategy is effective.

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