摘要
为解决现有直线电机存在边端效应、推力波动大以及控制系统复杂等问题,设计出一种新的直流直线电机结构,并对该电机的数学模型和动态特性进行了较为深入的分析。针对单闭环系统受绕组电压、负载和动子质量的影响,易出现电流和速度波动等问题,设计了多环结构的控制系统,并引入前馈控制方法改善了系统动态跟踪特性。基于上述分析,利用MATLAB对系统进行了仿真研究,结果显示所设计的电机结构具有较好的可行性和可控性,且引入前馈控制的多环控制系统可有效抑制电流和速度的波动,使系统的动态跟踪特性得到显著提高。
In order to solve the end effect,thrust fluctuation,complicated control system and other problems of current linear motors,a new DC linear motar is designed here,which mathematical model and dynamic characteristic of the motor are thoroughly analyzed.Accordingly,aiming at the fluctuation of speed and current of single-loop control system caused by the voltage of coil,load and mass of mover,a multiloop control system for the motor is designed,and the feedforward control method is inducted to improve the dynamic tracking performance.Furtherrnore ,the effectiveness of multi-loop control system with feedforward controller are proven by the simulation results using MATLAB ,and the practicality and controllability of the motor designed here are validated as well.
出处
《机械设计与制造》
北大核心
2011年第12期180-182,共3页
Machinery Design & Manufacture
基金
大连市科技计划项目(2007A12GX019)
辽宁省科学计划项目(2010220004)
关键词
直流直线电机
动态特性分析
多环控制器
前馈控制
DC linear motor
Dynamic characteristic analysis
Multi-loop controler
Feedforward control
