电工技术学报  2016, Vol. 31 Issue (6): 91-99    DOI:
电机及其控制 |
基于径向力反馈的无轴承异步主轴电机悬浮控制
詹立新, 周凯
清华大学精仪系 北京 100084
Radial Force Feedback Control for a Bearingless Induction Spindle Motor
Zhan Lixin, Zhou Kai
Deparment of Precision Instruments and Mechanology Tsinghua University Beijing 100084 China
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摘要 针对传统无轴承异步电机径向悬浮力控制受转矩绕组磁场定向准确性影响、系统控制延迟导致相位裕度降低等问题,提出一种基于径向力反馈的无轴承异步主轴电机悬浮控制方法。通过探测线圈法检测两套绕组的气隙磁链分量,依此计算出两套绕组产生的径向悬浮力大小,并将其作为反馈信号引入到悬浮闭环控制系统中,从而有效消除由系统控制延迟导致的相位裕度降低的影响。仿真和实验结果验证了所提出控制方法的有效性。实验结果表明,相比常规悬浮控制系统,基于径向力反馈的无轴承异步主轴电机悬浮控制系统具有更好的响应性能、阻尼特性及鲁棒性。
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詹立新
周凯
关键词 无轴承异步主轴电机 径向力反馈 悬浮控制 探测线圈    
Abstract:In bearingless induction motors, the correctness in the magnetic field orientation of the torque windings always affects the suspension performance, and the time delay caused by sampling period and current regulation leads to phase-lag in the controller. To overcome these problems, a radial force feedback control scheme is proposed in this paper. Herein, radial forces are calculated from the torque winding flux and suspension winding flux, which are detected from the search coils wounded around stator teeth. The detected radial forces are used as feedback signals to suppress the time delay. Thus, the phase-lag problem can be solved. The effectiveness of the proposed control scheme is verified by simulation and experimental results. The proposed control system has much better dynamic performance, damping and robustness, compared with the conventional suspension control system.
Key wordsBearingless induction spindle motor    radial force feedback    levitation control    search coils   
收稿日期: 2014-02-26      出版日期: 2016-04-01
PACS: TM346  
基金资助:国家自然科学基金资助项目(51275257)
通讯作者: 詹立新 男,1987年生,博士研究生,研究方向为无轴承异步电机和动力磁悬浮电主轴。E-mail: zhanlixin8787@163.com   
作者简介: 周 凯 男,1954年生,教授,博士生导师,研究方向为高性能伺服电机、无轴承异步电机和动力磁悬浮电主轴等。E-mail: zhoukai@mail.tsinghua.edu.cn
引用本文:   
詹立新, 周凯. 基于径向力反馈的无轴承异步主轴电机悬浮控制[J]. 电工技术学报, 2016, 31(6): 91-99. Zhan Lixin, Zhou Kai. Radial Force Feedback Control for a Bearingless Induction Spindle Motor. Transactions of China Electrotechnical Society, 2016, 31(6): 91-99.
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