【摘要】 对某型号数控机床进行可靠性试验,采集故障数据。在此基础上,建立可靠性模型,推断属于威布尔分布,并进行可靠性模型分析;采用粒子群优化算法对威布尔分布的尺度参数α和形状参数β进行估计。研究结果表明,采用此方法建立的可靠性模型较传统的更加准确。更多还原

【Abstract】 Reliability test for a certain NC machine tool was carried out. Failure data were collected. On this basis, a reliability model was established. It was inferred that it was a Weibull distribution. The reliability model was also analyzed. PSO(particle swarm optimization)algorithm was used to estimate the scale parameter α and shape parameter β of Weibull distribution. Research results show that the reliability model established by this method is more accurate than the traditional one.更多还原