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Time-Varying Disturbance Observer Based Improved Sliding Mode Single-Loop Control of PMSM Drives With a Hybrid Reaching Law

控制理论(社会学) 滑模控制 稳健性(进化) 超调(微波通信) 变结构控制 非线性系统 Lyapunov稳定性 电子速度控制 控制器(灌溉) 计算机科学 工程类 物理 控制(管理) 农学 化学 人工智能 电气工程 基因 生物 电信 量子力学 生物化学
作者
Zhixin Zhang,Xudong Liu,Jinpeng Yu,Haisheng Yu
出处
期刊:IEEE Transactions on Energy Conversion [Institute of Electrical and Electronics Engineers]
卷期号:38 (4): 2539-2549 被引量:20
标识
DOI:10.1109/tec.2023.3277628
摘要

To simplify the control structure, improve transient performance and disturbance rejection ability of the permanent magnet synchronous motor (PMSM), a hybrid reaching law (HRL) based sliding mode control (SMC) and a time-varying nonlinear disturbance observer is proposed for the speed-current single-loop control. Firstly, a HRL including variable terminal term and variable exponential term based sliding mode control is proposed. The chattering is analyzed, and the results indicate that the convergence time is effectively accelerated and the chattering is reduced. Then, a non-singular terminal sliding mode speed controller with single-loop structure is designed. The present scheme has better transient response and higher tracking performance. Furthermore, to strength the anti-disturbance ability and eliminate the estimated peak at the initial time, a time-varying nonlinear disturbance observer (TVNDO) is proposed to estimate both matched and mismatched disturbances, respectively, and they are carried out to provide disturbances compensation for the proposed controller. Subsequently, the convergence time is calculated, and the stability of the control system is analyzed and proved by the Lyapunov theory. Comparative experiments indicate that HRL+TVNDO has better speed control performance, such as smaller overshoot, faster transient response, higher control accuracy and stronger robustness under different operating conditions.
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