磁悬浮控制力矩陀螺锁紧机构可靠性设计及优化

汤继强; 赵韶璞; 王阔

doi:10.3788/OPE.20182603.0597

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磁悬浮控制力矩陀螺锁紧机构可靠性设计及优化

微纳技术与精密机械 | 更新时间：2020-07-05

- 磁悬浮控制力矩陀螺锁紧机构可靠性设计及优化
- Reliability design and structural optimization of locking device for magnetic suspension control moment gyro
- 光学精密工程 2018年26卷第3期页码：597-605
- 作者机构：
  
  北京航空航天大学仪器科学与光电工程学院, 北京 100191
- 作者简介：
  
  [ "汤继强(1972-), 男, 重庆人, 博士后, 副教授, 硕士生导师, 2005年于哈尔滨工程大学获得博士学位, 主要从事磁悬浮飞轮及磁悬浮控制力矩陀螺技术的研究。E-mail:tjq_72@163.com" ]
  [ "赵韶璞 (1993-)，男，河北石家庄人，硕士研究生，2015年于电子科技大学获得学士学位，主要从事磁悬浮控制力矩陀螺结构设计优化、仿真分析等方面的研究。E-mail：zbzspl@163.com" ]
  [ "王阔 (1991-)，男，江苏宿迁人，硕士，2014年于山东大学获得学士学位，2017年于北京航空航天大学获得硕士学位，主要从事陀螺结构设计优化、仿真分析、控制理论等方面的研究。Email：mewangkuo@126.com" ]
- 基金信息：
  
  国家自然科学基金面上项目(61773030);国家自然科学基金面上项目(61473018);国家留学基金资助项目(201606025042)
- DOI：10.3788/OPE.20182603.0597
  中图分类号： V414.1
- 收稿日期：2017-08-23，
  
  录用日期：2017-10-9，
  
  纸质出版日期：2018-03-25
- 稿件说明：
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汤继强, 赵韶璞, 王阔. 磁悬浮控制力矩陀螺锁紧机构可靠性设计及优化[J]. 光学精密工程, 2018,26(3):597-605.

Ji-qiang TANG, Shao-pu ZHAO, kuo WANG. Reliability design and structural optimization of locking device for magnetic suspension control moment gyro[J]. Optics and precision engineering, 2018, 26(3): 597-605.
汤继强, 赵韶璞, 王阔. 磁悬浮控制力矩陀螺锁紧机构可靠性设计及优化[J]. 光学精密工程, 2018,26(3):597-605. DOI： 10.3788/OPE.20182603.0597.

Ji-qiang TANG, Shao-pu ZHAO, kuo WANG. Reliability design and structural optimization of locking device for magnetic suspension control moment gyro[J]. Optics and precision engineering, 2018, 26(3): 597-605. DOI： 10.3788/OPE.20182603.0597.

摘要

鉴于传统确定性优化方法没有考虑结构参数的随机性对结构性能的影响，本文提出了一种基于可靠性灵敏度的锁紧弹片结构优化方法。首先，以某磁悬浮控制力矩陀螺锁紧弹片为研究对象，研究了有限元建模和失效模式；然后，考虑弹片结构尺寸和材料参数的随机性，结合响应面法与一次二阶矩法，研究了串联失效模式下弹片的可靠度计算方法，进而推导了可靠性关于设计变量均值和方差的灵敏度计算公式；最后，根据灵敏度分析结果，研究确定了弹片结构优化策略，构建了弹片可靠性优化模型。分析了安全系数法和可靠性法优化结果的差异，结果表明：与安全系数法相比，可靠性法的优化结果更好；在保证弹片可靠度的前提下，采用可靠性优化方法不仅使弹片质量下降了23.71%，使锁紧机构更加优化，而且使陀螺房质量也下降了0.98 kg，有利于磁悬浮控制力矩陀螺整机结构的轻量化。

Abstract

To avoid the negative effects of structural parameters' randomness on its properties

an optimization method of locking elastic sheet based on reliability sensitivity was proposed. Firstly

the finite element model and failure modes of the locking elastic sheet for a magnetic suspension control moment gyro were analyzed. Afterwards

considering the randomness of the structural sizes and material parameters of the elastic sheet

the reliability of the elastic sheet in the series failure mode were studied by using the response surface method and the first order second moment method. Furthermore

the calculating formulas of reliability sensitivity with respect to the mean and variance of random variables were derived. Eventually

the model of elastic sheet reliability optimization was built with the optimization strategy determined by the result of reliability sensitivity analysis. The difference influence of safety factor optimization and reliability optimization was analyzed. Experimental results indicate that the reliability optimization could get better optimization results compared with the safety factor optimization. The reliability sensitivity optimization method not only reduces the weight of the elastic sheet by 23.71% under the premise of ensuring the high reliability of the elastic sheet

but also reduces the weight of gyro room by 0.98 kg

which is beneficial to weight reduction of the magnetic suspension control moment gyro.

关键词

Keywords

references

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