基于改进积分器的无传感器位置和速度估计

Huacai Lu, Manhua Li, Yuetong Xu
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引用次数: 2

摘要

本文提出了一种用于永磁直线同步电机驱动的无传感器位置和速度检测算法。用实测的线电流和端电压来估算定子框内α-β轴的磁通,并对反向电动势进行积分。位置和速度信号由磁链的角度及其变化率导出。基于低通滤波器、高通滤波器和PI稳压器的组合,提出并分析了一种新的改进积分器,用于补偿在任何实际实现中都不可避免地存在的直流偏移和漂移。实验结果表明了目标的实现。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Sensorless position and speed estimation with improved integrator for PMLSM drive
This paper describes a sensorless position and speed detection algorithm designed for permanent magnet linear synchronous motor (PMLSM) drive. Measured line currents and terminal voltages are used to estimate the flux of the α-β axis in stator frame, integrating the back electromotive force (EMF). Position and speed signals are derived from angle of the flux linkage and its change rate. A new improved integrator is presented and analyzed for compensate DC offsets and drift, which invariably exist in any practical implementation based on combination of low-pass filter, highpass filter and PI regulator. Experimental results are presented to show the realization of the objectives.
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