Abstract: At present， there was an urgent need for an accelerated life test method of harmonic reducer in engineering to replace the full life test in order to reduce the test cycles and costs. Based on the principles of accelerated life test， a constant stress accelerated life test program  was proposed based on the failure characteristics of the harmonic reducer. The flexible wheel that was most likely to fail in the harmonic reducers was taken as the object， and the definite failure judgment， acceleration stress， acceleration factor， method of accelerating model were pointed out. In the small sample test data processing， a more accurate Weibull distribution parameter estimation was obtained by using the maximum likelihood method and Markov Monte Carlo method. The experimental results of the prototype show that the scheme may effectively describe the life of the harmonic reducers. The reliability evaluation standard of the basic rated life is 62% higher than that of the evaluation standard of the median life. The life index of the harmonic reducers was effectively evaluated. The research results have certain engineering application values. 

Key words:  , harmonic reducer, accelerate life test, Weibull distribution, parameter estimation, reliability analysis

摘要： 目前，工程中亟需一种谐波减速器加速寿命试验方法来替代全寿命试验，以减少试验周期和成本。基于加速寿命试验原理，提出了一种基于谐波减速器失效特性的恒定应力加速寿命试验方案，以谐波减速器最易发生失效的柔轮为对象，给出了确定失效判定、加速应力、加速系数、加速模型的方法。在小样本试验数据处理中，通过采用极大似然法和马尔科夫蒙特卡洛法得到了更为准确的威布尔分布参数估计。样机的实验结果表明该方案能有效描述谐波减速器的寿命，其基本额定寿命的可靠度评价标准比中位寿命的评价标准高出62%，有效地评估了谐波减速器的寿命指标，研究结果具有一定的工程应用价值。

关键词: 谐波减速器, 加速寿命试验, 威布尔分布, 参数估计, 可靠性分析