摘要
对于要求在低速下能够平稳运行的高精度直接驱动数控转台用环形永磁力矩电机伺服系统,它的定位精度主要受到以齿槽转矩为主的扰动力矩的影响。通过构建一个齿槽转矩观测器来动态补偿齿槽转矩,抑制了由于齿槽转矩引起的速度波动,从而减小了对电机低速性能的影响。仿真结果表明该方法有效提高了速度环的抗干扰能力和系统的低速精度。
To high-precision ring permanent magnet torque motor servo system used in direct drive numerical control (NC) rotary table with the request of smooth operation at low speed, the precision is mainly restricted by cogging torque. Building a cogging torque identification observer to dynamically compensate the cogging torque, it can inhibit the speed fluctuation caused by the cogging torque and reduce the influence of cogging torque to low velocities performance of the motor. The results show that the anti-jamming performance of speed ring is upgraded to boost low-speed precision of the system.
出处
《电气技术》
2009年第3期21-24,共4页
Electrical Engineering
基金
国家自然科学基金项目资助(50375102)
关键词
直接驱动数控转台
环形永磁力矩电机
齿槽转矩补偿
direct drive NC rotary table
ring permanent magnet torque motor
cogging torque compensation
