变负载下永磁同步直线电机的推力及速度变化分析

兰州理工大学学报 ›› 2021, Vol. 47 ›› Issue (2): 54-59.

变负载下永磁同步直线电机的推力及速度变化分析

沈浩^*, 张旺, 谈伟荣, 党生辉

兰州理工大学机电工程学院, 甘肃兰州 730050

收稿日期:2019-07-09 出版日期:2021-04-28 发布日期:2021-05-11
通讯作者: 沈浩(1965- ),男,甘肃兰州人，副教授.Email:13919935375@163.com

Analysis of thrust and velocity variation of permanent magnet synchronous linear motor under variable load

SHEN Hao, ZHANG Wang, TAN Wei-rong, DANG Sheng-hui

College of Mechano-Electronic Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China

Received:2019-07-09 Online:2021-04-28 Published:2021-05-11

摘要/Abstract

摘要： 以永磁同步直线电机为研究对象进行受力分析,建立数学模型,并利用Matlab/Simulink软件建立直线电机的仿真模型,探究施加不同负载时直线电机的推力以及速度变化.结果表明:随着工件质量的不断增加,直线电机的状态响应时间和最大偏差也在增加;速度的响应时间曲线上升趋势较为平缓,推力的响应时间曲线变化明显;推力的超调量曲线上升趋势较为平缓,速度的超调量曲线上升趋势变化明显,当工件质量为240 kg时,电机速度的超调量超过30%,严重影响到电机的运行.为降低负载变化对直线电机稳定性的影响,通过计算得出了最大负载质量和最大电机推力.

关键词: 直线电机, 变负载, Simulink, 建模仿真

Abstract: Taking the permanent magnetic synchronous linear motor as the research object, its force was analyzed; mathematical model was established, and the simulation model of the linear motor by using Matlab/Simulink in order to study the thrust and speed change of the linear motor when different loads are applied. The results show that with the increase of the workpiece’s mass, the state response time and maximum deviation of the linear motor increased; the response time curve of the speed is flat; the response time curve of thrust changed obviously; the overshoot curve of thrust increase flatly; the overshoot curve of velocity increased stably, the overshoot curve of speed is obvious.When the quality of the workpiece is 240 kg, the over-adjusting amount of motor speed exceeds 30%, which seriously affects the operation of the motor. In order to reduce the effect of load change on linear motor stability, the maximum load quality and maximum motor thrust are calculated.

Key words: linear motor, variable load, Simulink, modeling simulation

中图分类号:

TH17

沈浩, 张旺, 谈伟荣, 党生辉. 变负载下永磁同步直线电机的推力及速度变化分析[J]. 兰州理工大学学报, 2021, 47(2): 54-59.

SHEN Hao, ZHANG Wang, TAN Wei-rong, DANG Sheng-hui. Analysis of thrust and velocity variation of permanent magnet synchronous linear motor under variable load[J]. Journal of Lanzhou University of Technology, 2021, 47(2): 54-59.

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