电工技术学报  2019, Vol. 34 Issue (14): 2894-2900    DOI: 10.19595/j.cnki.1000-6753.tces.180857
电机与电器 |
航天用无接触式锁定机构的解析分析与结构对比
李勇飞, 孙剑飞, 李勇, 王骞, 王宝超
哈尔滨工业大学电气工程及自动化学院 哈尔滨 150001
Theoretical Analysis and Structural Comparison of Contactless Locking Mechanisms Used in Aerospace
Li Yongfei, Sun Jianfei, Li Yong, Wang Qian, Wang Baochao
Department of Electrical Engineering & Automation Harbin Institute of Technology Harbin 150001 China
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摘要 航天设备上的一些小力矩小惯量负载如观测设备,一般都工作在有限转角范围内,在工作区域以外,需要单独设置辅助机构对其锁定,以免对其他设备产生影响。现有文献所提出方案均为物理接触式方案,结构复杂、稳定性差。该文提出了一种无接触式锁定机构,并根据励磁方式的不同研究了电磁式和永磁式两种设计方案,通过解析法推导并统一了两种设计方案的电磁转矩表达式,清晰揭示了性能参数与结构参数之间的关系。通过三维有限元数值解法进一步对比研究了两种方案的主要性能参数,包括临界角、峰值力矩和能量密度,最后制作了永磁结构样机并进行实验验证,证明了所提出方案的工程实用性。
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关键词 无接触式锁定机构临界角峰值力矩能量密度    
Abstract:Some loads with small torque and small inertia on aerospace equipment such as observation equipment, generally work within a limited angle range. Outside the working area, a separate auxiliary locking mechanism is required to lock it to avoid affecting other devices. The schemes proposed in the existing literature are all physical contact schemes with complex structure and poor stability. In this paper, a contactless locking mechanism is proposed, two designs of electromagnetic and permanent magnetic scheme are proposed according to their different excitation sources. The mathematical expressions of the torque characteristics for both of the designs are derived and unified in the analytical way, which have visually revealed the relationship between the performance and the structure parameters. The key performance parameters of the two schemes, including critical angle, peak torque and energy density, are further compared using three-dimensional finite element numerical method. The theoretical results are finally verified by experiments on a permanent magnet prototype, which proves that the design is reasonable in practical engineering.
Key wordsContactless    locking mechanism    critical angle    peak torque    energy destiny   
收稿日期: 2018-05-17      出版日期: 2019-07-29
PACS: TM351  
基金资助:国家自然科学基金资助项目(51407047)
通讯作者: 王骞 男,1982年生,博士,副教授,研究方向为一体化电机系统、特种电磁机构。E-mail:q.wang@hit.edu.cn   
作者简介: 李勇飞 男,1995年生,博士研究生,研究方向为新材料应用、特种电磁机构。E-mail:liyongfeihit@126.com
引用本文:   
李勇飞, 孙剑飞, 李勇, 王骞, 王宝超. 航天用无接触式锁定机构的解析分析与结构对比[J]. 电工技术学报, 2019, 34(14): 2894-2900. Li Yongfei, Sun Jianfei, Li Yong, Wang Qian, Wang Baochao. Theoretical Analysis and Structural Comparison of Contactless Locking Mechanisms Used in Aerospace. Transactions of China Electrotechnical Society, 2019, 34(14): 2894-2900.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.180857          https://dgjsxb.ces-transaction.com/CN/Y2019/V34/I14/2894