摘要
本文针对无轴承电机径向控制稳定性问题,引入了传统电机控制中负载观测的思想。本文首先介绍了集中式绕组结构的无轴承电机拓扑及其数学模型。基于此数学模型,通过状态观测理论推导构造了扰动观测器,以改善径向的位移控制性能。仿真验证的结果表明,扰动观测器对交变以及阶跃的径向干扰均有较好的跟踪效果。通过扰动力与位移间的波特图进一步分析了扰动观测器的带宽,为扰动观测器的零极点设计提供了理论依据。最后文章通过实验验证了优化方案对扰动抑制效果。
Aiming at improving the radial stability of bearingless motor,this paper introduced the idea of load observation.Firstly,the topological structure and mathematical model of centralized winding bearingless motor was introduced.Based on this mathematical model,the disturbance observer was deduced and constructed to improve the radial displacement control performance.The simulation result shows that the disturbance observer has a good tracking effect on the alternating and step radial disturbances.The bandwidth of the disturbance observer was further analyzed by the baud diagram,which provided theoretical basis for the zero-pole design of the observer.Finally,the effect of the disturbance suppression was verified by experiments.
作者
陆冬
丁强
LU Dong;DING Qiang(Nanjing Institute of Industry Technology, Nanjing 210023, China)
出处
《微电机》
北大核心
2020年第3期99-103,共5页
Micromotors
基金
江苏省风力发电工程技术中心开放基金项目资助(ZK16-03-05)。
关键词
无轴承电机
悬浮力
扰动观测器
扰动抑制
bearingless motor
flux-switching
ripple observation
parameter identification