改进型滑模扰动观测器的感应电机控制系统

doi:10.16180/j.cnki.issn1007-7820.2022.02.010

Abstract

Abstract:

In view of the poor control performance of traditional PI regulators when the load is drastically changed, and the use of traditional sliding mode observers has serious chattering problems, taking induction motors as the research object, a real-time disturbance compensation scheme based on sliding mode observer and traditional PI regulator is proposed in this study. The system disturbance is observed and estimated in real time through the improved disturbance observer, and the estimated disturbance is fed back to the PI regulator for feedforward compensation, thereby effectively improving the motor control performance and improving the chattering phenomenon. A simulation platform based on MATLAB and an experimental platform of TMS320F28335 DSP are established, and the improved sliding mode observer disturbance feedforward compensation method is compared with conventional single PI adjustment and conventional sliding mode observer disturbance compensation. The experimental results show that the speed overshoot is optimized by 0.5%, and the response time is 30 ms, which verifies the effectiveness and feasibility of the proposed scheme.

Key words: induction motor, load disturbance, vector control, speed loop optimization, improved sliding mode observer, disturbance compensation, PI regulation, new approach law

CLC Number:

TP273

YUAN Qingqing,QU Hanfei. Research on Induction Motor Control Based on Improved Sliding Mode Disturbance Observer[J].Electronic Science and Technology, 2022, 35(2): 59-66.

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References 19

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参数	数值
额定功率P_n	1.49 kW
额定电压V_n	380 V
额定速度ω^*	1 000 r·min^-1
极对数n_p	2
转子电阻R_r	1.218 Ω
定子电阻R_s	0.624 Ω
转动惯量J	1.2×10^-4 kg·m²

性能比较	控制方法
性能比较	传统观测器	改进观测器
速度超调量	2.3%	1.8%
响应时间/ms	150	120
加载速度波动	0.8%	0.5%
加载后恢复时间/ms	60	35
减载速度波动	0.8%	0.5%
减载后恢复时间/ms	60	48

Research on Induction Motor Control Based on Improved Sliding Mode Disturbance Observer

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