摘要：无位置传感器永磁直线同步电机（PMLSM）控制系统不仅具有结构简单、易维护、运行效率高、调速性能好等优点，还具有体积小、成本低、可靠性高以及能应用于一些特殊场合的特点。本文对国内外直线电机的发展历史和控制技术的研究现状及水平进行综述；全面介绍无传感器控制技术的发展现状，并详细阐述各控制方法实现对电机位置和速度估计的原理。

关键词：永磁直线电机；位置检测；初始位置
Abstract: The sensorless control system of permanent magnet linear synchronous motor without sensor not only has a simple structure, high efficiency, excellent performance, and easy maintenance, but also has a small size, low cost, high reliability, and some special application This paper summarized the research status of control technology and development history of linear motor home and abroad; Details the development status of sensorless control technology, and elaborate on various control methods that achieve estimated motor position and speed

Key words: permanent magnet linear synchronous motor; position detection; initial position