北京航空航天大学学报 ›› 2018, Vol. 44 ›› Issue (11): 2321-2328.doi: 10.13700/j.bh.1001-5965.2018.0044

• 论文 • 上一篇    下一篇

MSCSG转子不平衡振动原理分析与建模

夏长峰1, 蔡远文1, 任元2, 王卫杰2, 樊亚洪3, 尹增愿1   

  1. 1. 航天工程大学 研究生院, 北京 101416;
    2. 航天工程大学 宇航科学与技术系, 北京 101416;
    3. 北京控制工程研究所, 北京 100190
  • 收稿日期:2018-01-18 修回日期:2018-03-02 出版日期:2018-11-20 发布日期:2018-11-27
  • 通讯作者: 任元,E-mail:renyuan_823@aliyun.com E-mail:renyuan_823@aliyun.com
  • 作者简介:夏长峰,男,博士研究生。主要研究方向:磁悬浮控制敏感陀螺的测量与控制;蔡远文,男,博士,教授。主要研究方向:航天器测试与发射;任元,男,博士,副教授。主要研究方向:导航、制导与控制。
  • 基金资助:
    国家自然科学基金(51475472,61403396,51605489)

Principle analysis and modeling of rotor imbalance vibration in magnetically suspended control and sensing gyroscope

XIA Changfeng1, CAI Yuanwen1, REN Yuan2, WANG Weijie2, FAN Yahong3, YIN Zengyuan1   

  1. 1. Company of Postgraduate Management, Space Engineering University, Beijing 101416, China;
    2. Department of Aerospace Science and Technology, Space Engineering University, Beijing 101416, China;
    3. Beijing Institute of Control Engineering, Beijing 100190, China
  • Received:2018-01-18 Revised:2018-03-02 Online:2018-11-20 Published:2018-11-27
  • Supported by:
    National Natural Science Foundation of China (51475472,61403396,51605489)

摘要: 磁悬浮控制敏感陀螺(MSCSG)是一种新概念陀螺,采用洛伦兹力磁轴承为力矩器驱动转子径向偏转。针对MSCSG转子旋转过程中产生不平衡振动的问题,分析了不平衡振动产生原理,并建立了解析模型。首先,分析了MSCSG的工作原理。然后,确定了转子不平衡条件下转子几何轴与惯性轴间的几何解析关系;推导了转子不平衡振动力矩数学模型,并对不平衡扰动量的能观性进行了判定;建立了包含振动源的磁轴承-转子控制系统模型,对闭环系统的不平衡振动产生机理进行了分析,并对不同转速下不平衡振动的响应特性进行仿真,仿真结果验证了所提出模型的正确性。最后,根据转子不平衡振动的特点提出了对其进行抑制的要求,为实现MSCSG转子不平衡振动控制奠定了理论基础。

关键词: 磁悬浮控制敏感陀螺(MSCSG), 洛伦兹力磁轴承, 转子不平衡, 能观性, 振动建模

Abstract: Magnetically suspended control and sensing gyroscope (MSCSG) is a kind of new-concept gyro, which takes Lorentz force magnetic bearing as torquer to drive the rotor to tilt in radial direction. As there is dynamic unbalance in the magnetically suspended rotor system because of the uneven mass distribution, the generation principle of imbalance vibration is analyzed and the analytic model of it is established. First, the working principle of MSCSG is introduced. Then, the geometric analytic relation between geometric and inertial axis of rotor is determined on condition that rotor is unbalanced; the mathematic model of unba-lance vibration torque is established and the observability of imbalance disturbance is demonstrated. The model of bearing-rotor control system containing vibration source is constructed and the vibration generation mechanism in closed-loop system is analyzed. The dynamic response characteristics of unbalance vibration with different rotate speeds are simulated and the simulation result indicates the correctness of the proposed model. Finally, the requirement for suppression of unbalance vibration is put forward according to its vibration characteristics, which lays the theoretical foundation for realizing MSCSG rotor imbalance vibration control.

Key words: magnetically suspended control and sensing gyroscope (MSCSG), Lorentz force magnetic bearing, rotor imbalance, observability, vibration modeling

中图分类号: 


版权所有 © 《北京航空航天大学学报》编辑部
通讯地址:北京市海淀区学院路37号 北京航空航天大学学报编辑部 邮编:100191 E-mail:jbuaa@buaa.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发