Research of the Test Method of Double Stress Step-down Acceleration Life for Harmonic Reducer

Jing Wang; Menglun Tao; Dingfang Chen; Can Wu; Junfeng Wu; Fang Chen; Bo Li

doi:10.16578/j.issn.1004.2539.2020.10.002

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Research of the Test Method of Double Stress Step-down Acceleration Life for Harmonic Reducer

Theory·Reserach | 更新时间：2022-11-10

- Research of the Test Method of Double Stress Step-down Acceleration Life for Harmonic Reducer
- Journal of Mechanical Transmission Vol. 44, Issue 10, Pages: 8-12(2020)
- 作者机构：
  
  1.武汉理工大学智能制造与控制研究所，湖北武汉 430063
  2.湖北科峰传动设备有限公司，湖北黄冈 438000
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2020.10.002
  CLC：
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王静,陶孟仑,陈定方等.谐波减速器双应力步降加速寿命试验方法研究[J].机械传动,2020,44(10):8-12.

Wang Jing,Tao Menglun,Chen Dingfang,et al.Research of the Test Method of Double Stress Step-down Acceleration Life for Harmonic Reducer[J].Journal of Mechanical Transmission,2020,44(10):8-12.
王静,陶孟仑,陈定方等.谐波减速器双应力步降加速寿命试验方法研究[J].机械传动,2020,44(10):8-12. DOI： 10.16578/j.issn.1004.2539.2020.10.002.

Wang Jing,Tao Menglun,Chen Dingfang,et al.Research of the Test Method of Double Stress Step-down Acceleration Life for Harmonic Reducer[J].Journal of Mechanical Transmission,2020,44(10):8-12. DOI： 10.16578/j.issn.1004.2539.2020.10.002.

摘要

针对现有的谐波减速器加速寿命试验方法效率低、试验方案不完善的问题，提出了一种双应力步降加速寿命试验方法。以工业机器人用谐波减速器为研究对象，通过对加速方案的对比以及加速寿命失效机理的分析，制定出双应力步降试验载荷谱。基于各段步降载荷应力之间的迭代关系，利用遗传算法计算了谐波减速器所服从Weibull分布的最优参数。结果表明，此双应力步降加速寿命试验的加速因子为12.5。该方案准确并有效地提高了试验效率，为优化谐波减速器设计以及缩短谐波减速器加速寿命试验的试验周期提供了参考依据。

Abstract

Aiming at the problems of low efficiency and imperfect test scheme of the existing accelerated life test of the harmonic reducer， a double stress step-down accelerated life test method is proposed. Taking the harmonic reducer for industrial robots as the research object， through comparing the acceleration schemes and analyzing the failure mechanism of accelerated life， a double stress step-down test load spectrum is formulated. Based on the iterative relationship between the step-down load stresses of each segment， the optimal parameters of Weibull distribution of harmonic driver are calculated by genetic algorithm. The results show that the acceleration factor for this double stress step-down life test is 12.5. The test efficiency is accurately and effectively improved by this scheme， and a reference for optimizing the design of the harmonic reducer and shortening the test cycle of the accelerated life test of the harmonic reducer are provided.

关键词

谐波减速器双应力步降加速载荷谱遗传算法Weibull分布

Keywords

Harmonic reducerDouble stress step-down accelerationLoad spectrumGenetic algorithmWeibull distribution

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