基于NESO的直线电动机推力波动补偿策略  

Force Ripple Suppression in Linear Motor Based on NESO

作　　者：林家春[1] 李伟[2] 王先逵[3] 石照耀[1] 

机构地区：[1]北京工业大学机械工程与应用电子技术学院,北京100022 [2]中国农业大学工学院,北京100083 [3]清华大学精密机械与仪器系,北京100084

出　　处：《北京工业大学学报》2008年第8期811-814,共4页Journal of Beijing University of Technology

基　　金：国家“十五”科技攻关计划资助项目(2001BA203B04)．

摘　　要：为了抑制推力波动等扰动对直线电动机运行平稳性的影响,提出了一种基于非线性扩张状态观测器(nonlinear extended state observer,简称NESO)的推力波动抑制策略.电机在运行的过程中,NESO能对包括推力波动在内的各种扰动进行实时观测,并通过前馈方式对其进行补偿.当电机运行速度为0.1 m/s时,进行推力波动辨识补偿后稳态时速度波动范围从6.75%下降到1.23%.实验结果表明,该方法有效地减小了推力波动的影响,提高了稳态时速度响应的平稳性.In order to suppress the inherit force ripple of Permanent Magnet Linear Synchronous Motors to get a smooth velocity response, a compensation method based on NESO is proposed. The disturbances including force ripple are online observed by the NESO and compensated by a feed forward component. At the reference velocity of 0.1 m/s, the fluctuation range decreases from 6.75% to 1.23%. Both simulation and experimental results showed that the influence of the force ripple is effectively reduced, and thus resulted in a smoother velocity response.

关 键 词：直线电动机 状态估计 伺服电动机 推力波动 扩张状态观测器 

分 类 号：TM359.4[电气工程—电机]