摘要
永磁直线同步电动机(PMLSM)伺服系统具有高速、高响应和直接驱动等优点,但其端部效应造成的与位移相关的周期性推力波动和摩擦力会降低系统的伺服性能。为了削弱周期性扰动的影响,设计了PDFF(伪微分前馈反馈控制)速度控制器和改进型位移重复控制器来抑制周期性扰动的影响,以实现周期性输入信号的精确跟踪。理论推导与仿真结果表明,该方案有效地抑制PMLSM伺服系统的周期性扰动的影响,对周期性输入信号具有良好的跟踪特性。
Permanent-magnet linear synchronous motor（PMLSM）servo system has the merits of high speed, high response, and direct drive, but the position-dependent periodic thrust ripple caused by ending effect and the friction destroy the servo performance. To weaken the influences of the position-dependent periodic disturbances, the controller was designed to reject the periodic disturbances and track the desired periodic input, which associated PDFF（Pseudo derivative feedback with feed-forward） control on the velocity loop with the modified repetitive control on the position loop. Theoretical analysis and simulation results show that the proposed scheme can well reduce the influence of the periodic disturbance of PMLSM servo system, and make the system have good position-tracking performance for the periodically desired signal.
出处
《组合机床与自动化加工技术》
北大核心
2009年第4期42-45,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金项目(50375102)
关键词
永磁直线同步电动机
PDFF控制
重复控制
周期性扰动
permanent-magnet linear synchronous motor
PDFF control
repetitive control
periodic disturbances
