SENSORLESS CONTROL OF TUBULAR PERMANENT MAGNET SYNCHRONOUS LINEAR MOTOR CONSIDERING THE END EFFECT

被引：0
|
作者：
Zhang, Chunlei [1 ]
Ye, Peiqing [1 ]
Zhang, Hui [1 ]
机构：
[1] Tsinghua Univ, Dept Mech Engn, Beijing, Peoples R China
来源：
PROCEEDINGS OF THE ASME 2020 INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, IMECE2020, VOL 2B | 2020年
基金：
中国国家自然科学基金;
关键词：
sensorless; inductance; end effect; linear motor; high-frequency square wave; SIGNAL INJECTION; VELOCITY ESTIMATION; ROTOR POSITION; VOLTAGE; ALGORITHM;
D O I：
暂无
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
Due to the end effect of tubular permanent magnet synchronous linear motor, the inductance of the motor is complex, and sensorless control is difficult to realize. To solve the problem, the analytical expression of the inductance was derived based on the axial magnetomotive force and axial specific permeance. Then the inductance was studied by the analytical model and the finite element method. And the characteristics of the inductance were given. The DC components of self-inductance and mutual-inductance are not zero and the amplitudes of their second harmonic are not equal. Based on the characteristics of the inductances, a high-frequency square-wave injection method in the stationary reference frame was proposed. This method compensates the DC component of the high-frequency response current by off-line measurement, and the position information is obtained by an orthogonal phase-locked loop. Experiments show that this method can estimate the mover position accurately.
引用
收藏
页数：6
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