Study on transmission reliability of long life space electric slip ring

Xing-fu LIU; Ye ZHU; Hui-jie LIU; Ling-feng ZHAO; Zhuo-chen XIE

doi:10.3788/OPE.20192709.2028

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Study on transmission reliability of long life space electric slip ring

更新时间：2020-08-13

- Study on transmission reliability of long life space electric slip ring
- Optics and Precision Engineering Vol. 27, Issue 9, Pages: 2028-2035(2019)
- 作者机构：
  
  上海微小卫星工程中心，上海 201210
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20192709.2028
  CLC： TP394.1; TH691.9
- Received：17 December 2018，
  
  Accepted：27 February 2019，
  
  Published：15 September 2019
- 稿件说明：
移动端阅览
Xing-fu LIU, Ye ZHU, Hui-jie LIU, et al. Study on transmission reliability of long life space electric slip ring[J]. Optics and precision engineering, 2019, 27(9): 2028-2035.
DOI：

Xing-fu LIU, Ye ZHU, Hui-jie LIU, et al. Study on transmission reliability of long life space electric slip ring[J]. Optics and precision engineering, 2019, 27(9): 2028-2035. DOI： 10.3788/OPE.20192709.2028.

摘要

国内导电滑环在轨寿命在10万转量级，为验证某型号星载柱式滑环(汇流环)在轨100万转需求下寿命期内的可靠性，地面对导电滑环进行200万转寿命试验考核，并测试了寿命试验末期刷丝和刷丝束两种不同刷丝结构形式摩擦副下功率环及信号环的传输可靠性。在真空高低温环境中，根据在轨不同工况，模拟星上特定功率以及500 kb/s的CAN，RS422信号，测试导电滑环功率环供电稳定性及常用信号经过信号环后传输误码，为导电滑环正样产品配对摩擦副的结构设计提供依据。刷丝束多触点结构形式的导电滑环电平波动率为0.6%，信号传输误码率为0；单刷丝结构形式导电滑环电平波动率超过100%，信号传输误码率为16.1%；验证了空间应用环境下，刷丝束结构形式信号环性能优于传统单刷丝的导电滑环。

Abstract

The life of a satellite electric slip ring is approximately 100

000 rounds. To verify the reliability of a column slip ring at the end of one million rounds

we performed a two-million-round life test. As slip rings contain both a single brush wire and a brush bunch

this test compareed the transmission error of different types of signals that pass through single brush wires and brush bunches. The structure of the brush wire was vital in determining the transmitting stability of a space electric slip ring. This study verified the main influencing factors

such as different temperature

revolving speed

and vacuum performance. The transmission errors of CAN and RS422 signals indicate that brush bunch rings

which are characterized by a 0.6% voltage drop and no transmission error

are more stable than single brush wire rings in a vacuum with a signal transmission speed of 500 kbps. The maximum voltage drop of single brush rings is over 100% and transmission errors are approximately 16.1%. This proves that the design of brush bunches can effectively improve the reliability of signal transmission and prolong the service life of slip rings; this knowledge is of significant value in determining the reliability of satellites.

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references

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