摘要
为评价机器人的可靠性水平,开展关节机器人可靠性加速试验研究。通过分析现有可靠性标准的技术要求,结合试验样品典型工况下的应用场景,确定试验基准条件、加速因子;采用定时截尾试验统计方法,提出一种基于温度应力和重复定位精度退化的加速模型,设计整体试验方案并搭建可靠性测试加速试验场景;最后对试验数据和结果进行分析。结果表明:在试验前、中、后期分别对被测关节机器人的重复定位精度进行检测,均小于0.1 mm,且未出现性能退化现象,满足机器人在典型工况的作业要求;整个加速试验过程未监测到符合标准评判的关联故障,验证了被测关节机器人的平均无故障时间达到了80000 h的可靠性测评目标。研究可用于指导机器人检验检测、可靠性评估和生产应用。
To evaluate the reliability level of robots,an accelerated reliability testing was conducted on joint robots.By analyzing the technical requirements of existing reliability standards and considering the typical operating conditions of the test samples,the baseline test conditions and acceleration factors were determined.Employing the timed truncation statistical method,an joint model based on temperature stress and repeatability degradation was proposed.A comprehensive test plan was designed,and an accelerated reliability testing scenario was established.Finally,the test data and results were analyzed.The results indicate that repeatability accuracy measurements of the tested joint robot remained is less than 0.1 mm throughout the pre-test,mid-test,and post-test phases,with no performance degradation observed,meeting operational requirements under typical working conditions.No correlated failures meeting standard criteria are detected during the entire accelerated testing process,validating that the mean time between failures of the tested joint robot achieves the reliability assessment target of 80000 h.This research can be used to guide robot inspection,reliability assessment,and production applications.
作者
王海霞
王清忠
伍国梁
WANG Haixia;WANG Qingzhong;WU Guoliang(Guangdong Testing Institute of Product Quality Supervision,Guangzhou Guangdong 510670,China;Provincial Quality Standard Laboratory for Safety and Reliability of Intelligent Robots,Foshan Guangdong 528300,China;Key Laboratory of Safety of Intelligent Robots,State Administration for Market Regulation,Foshan Guangdong 528300,China)
出处
《机床与液压》
北大核心
2026年第5期72-78,共7页
Machine Tool & Hydraulics
基金
中国认证认可协会机器人减速器精度检测技术研究项目(2024CCAAKYZX-05)
2025年国家科技重大专项(2025ZD1601200)
国家市场监督管理总局科技计划项目(2024MK095,2025MK101)
关键词
关节机器人
可靠性
加速试验
平均无故障时间
joint robot
reliability
accelerated testing
mean time between failures
