基于扩展状态观测器的Buck变换器非奇异终端滑模控制算法

Proceedings of the 2022 6th International Conference on Electronic Information Technology and Computer Engineering Pub Date : 2022-10-21 DOI:10.1145/3573428.3573527

Daoyou Sun, Shilin Liu, Jingyi Li

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引用次数: 0

摘要

针对负载电阻扰动对降压变换器输出电压的影响，提出了一种基于扩展状态观测器(ESO)的非奇异终端滑模控制算法。首先，设计了扩展状态观测器来估计系统状态和负载阻力。其次，采用非奇异终端滑模控制算法，根据负载电阻估计值创建系统控制器;然后，通过理论分析验证了所设计的扩展状态观测器和非奇异终端滑模控制器的稳定性。最后通过Matlab/Simulink进行仿真验证。仿真验证了所提出的扩展状态观测器非奇异终端滑模控制算法与传统的比例积分(PI)控制算法相比，能够实现对降压变换器系统输出电压的快速准确跟踪，提高系统的鲁棒性。

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Non-singular Terminal Sliding Mode Control Algorithm for Buck Converter Based on Extended State Observer

This paper proposes a non-singular terminal sliding mode control (NTSMC) algorithm based on an extended state observer (ESO) for the effect of load resistance disturbances on the output voltage of the buck converter. First of all, the extended state observer is designed to estimate the system state as well as the load resistance. Secondly, the non-singular terminal sliding mode control algorithm is used to create the system controller based on the estimated values of load resistance. Then, the stability of the designed extended state observer and the non-singular terminal sliding mode controller are verified by theoretical analysis. Finally, the simulation is verified by Matlab/Simulink. The simulation verified that the proposed non-singular terminal sliding mode control algorithm with extended state observer can achieve fast and accurate tracking of the buck converter system output voltage and improve the robustness of the system, compared with the traditional proportional-integral (PI) control algorithm.

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Proceedings of the 2022 6th International Conference on Electronic Information Technology and Computer Engineering

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