直线电机的发展及其磁阻力优化综述

Development of linear motor and its optimization method of detent force

针对传统间接驱动系统在自动化设备上的应用缺陷等问题,提出了直接驱动的概念,以直线电机为动力源直接推动运动台运动。在比较直接驱动与传统间接驱动性能的基础上,论述了直线电机在大行程、高速高精度自动化控制领域的应用趋势,并从驱动原理、驱动力和定位精度等方面介绍了国内外直线电机的研究现状。针对影响直线电机驱动性能的磁阻力参数,归纳了相关文献削弱磁端效应和减少齿槽力的原理和研究方法,并从电机本体设计与电机控制技术两个方面对直线电机磁阻力的优化方法进行了总结。研究结果表明:直线电机以其良好的运行性能将逐步取代传统旋转电机的市场地位,同时直线电机在工程应用上的深入推广必须解决制造工艺、电机热效应、电机驱动器设计等问题。

Aiming at application defects of traditional indirect driving system using in automation equipment, the concept of direct driving was proposed, the linear motor was used as a power source to promote the platform. Based on a comparison of direct driving and the tradition- al indirect driving performance, the application tendency of linear motor was discussed using in automatic control ficids of larger stroke, high speed and high precision, and then the linear motor of domestic and foreign research status were introduced from the driving principle, the driving force and the positioning precision. In view of the effecting of detent force of linear motor on its driving performance, the principle and research methods using by some related scholars were summarized, which were about the end effect weakened and cogging force reduced, and finally the optimization methods were summed up for the linear motor＇s detent force from the motor body design and the motor control technol- ogy. The results indicate that owning to the perfect operating performance of linear motor, it will replace the traditional rotary motor in the in- dustry market, at the same time, the linear motor must solve the problem of manufacturing process, the motor thermal effects, and the motor driver design to be promoted in engineering application deeply.