基于定时截尾的协作机器人可靠性鉴定  

Reliability Evaluation of Collaborative Robots Based on Timed Truncation

作　　者：戚继先 江凯 赵恒 QI Jixian;JIANG Kai;ZHAO Heng(Wuhu Ceprei Information Industry Technology Research Institute Co.,Ltd.,Wuhu 241002,China;Anhui Polytechnic University,Wuhu 241000,China)

机构地区：[1]芜湖赛宝信息产业技术研究院有限公司,安徽芜湖241002 [2]安徽工程大学,安徽芜湖241000

出　　处：《电子产品可靠性与环境试验》2025年第1期38-43,共6页Electronic Product Reliability and Environmental Testing

摘　　要：协作机器人在工业领域应用广泛,对其寿命进行评估也是至关重要的一个环节。目前常用的双边置信方法无法对无失效情况下的寿命可靠性置信上限进行评估,采用了基于置信下限的定时截尾方法来解决某型协作机器人无失效情况下可靠性评估的问题。首先,采用基于置信下限的定时截尾统计模型确定总试验时长;其次,按照试验大纲开展可靠性鉴定试验,在试验过程中采集协作机器人性能数据并进行故障状态判别;最后,通过试验数据鉴定某型协作机器人平均无故障工作时间大于等于30000 h,置信度为70%,对于协作机器人可靠性评估具有一定的参考价值。Collaborative robots are widely used in the industrial field,and the evaluation of their life is also a crucial aspect.Currently,the commonly used two-sided confidence method cannot evaluate the upper confidence limit of life reliability under the condition of no failure.A timed truncation method based on confidence lower limit is adopted to solve the reliability evaluation problem of a cooperative robot without failure.Firstly,a timed truncated statistical model based on the confidence lower limit is used to determine the total test duration.Secondly,reliability evaluation tests are carried out according to the test outline,and performance data of the collaborative robots are collected during the test,and fault state identification is carried out.Finally,the mean time between failure of a collaborative robot is determined to be greater than or equal to 30000 h with a confidence level of 70%through the test data,which has certain reference value for the reliability evaluation of collaborative robots.

关 键 词：协作机器人 寿命评估 定时截尾试验 无失效 

分 类 号：TP242[自动化与计算机技术—检测技术与自动化装置] TB114.37[自动化与计算机技术—控制科学与工程]