| 熊国华,孙权,任广沛,冯静,刘芳.基于加速寿命试验理论的履带式起重机用控制器验收方法[J].装备环境工程,2019,16(3):88-91. XIONG Guo-hua,SUN Quan,REN Guang-pei,FENG Jing,LIU Fang.Method of Reliability Acceptance for Crawler Crane′s Controller Based on Accelerated Life Test Theory[J].Equipment Environmental Engineering,2019,16(3):88-91. |
| 基于加速寿命试验理论的履带式起重机用控制器验收方法 |
| Method of Reliability Acceptance for Crawler Crane′s Controller Based on Accelerated Life Test Theory |
| 投稿时间：2018-12-18 修订日期：2019-03-25 |
| DOI：10.7643/ issn.1672-9242.2019.03.018 |
| 中文关键词: 履带式起重机 控制器 可靠性验收试验 加速寿命试验 加速系数 |
| 英文关键词:crawler crane controller reliability acceptance test accelerated life test accelerated factor |
| 基金项目: |
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| Author | Institution |
| XIONG Guo-hua | 1. XuGong Mechanical Construction Machinery Branch, Xuzhou 221000, China |
| SUN Quan | 2. Hunan Ginkgo Reliability Technology Research Institute Co., Ltd, Changsha 410100, China |
| REN Guang-pei | 1. XuGong Mechanical Construction Machinery Branch, Xuzhou 221000, China |
| FENG Jing | 2. Hunan Ginkgo Reliability Technology Research Institute Co., Ltd, Changsha 410100, China |
| LIU Fang | 2. Hunan Ginkgo Reliability Technology Research Institute Co., Ltd, Changsha 410100, China |
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| 中文摘要: |
| 目的 提高履带式起重机用控制器可靠性验收试验的效率和效果。方法 以履带式起重机用控制器为研究对象，在分析控制器实际使用环境条件和FMEA的基础上，利用加速寿命试验理论对控制器的可靠性验收试验方案进行设计，对温度和湿度进行加速，振动和电压保持典型值，利用高温高湿加速系数模型，得到改进后的验收试验定时截尾方案。结果 给出了三综合（通电）条件下的高风险定时截尾方案，包括高温高湿加速条件下控制器可靠性验收试验的应力剖面、加速系数、试验方案参数以及基于试验结果的MTBF估计方法等。高温高湿加速系数为142.14，生产方风险α和使用方风险β均为30％，鉴别比d=2，最低可接受值为30 000 h，高温高湿加速条件下累积试验时间为780.92 h，判决接收故障数为2。结论 该方法能够在较短的时间内获得控制器可靠性特征量的估计值，并作出接收或拒收的验收决策。加速后验收试验时间从111 000 h缩短到780.92 h，能够满足控制器实际验收需要。 |
| 英文摘要: |
| Objective To improve efficiency and effectiveness of reliability acceptance test for controller of crawler crane. Methods With the controller of crawler crane as the object of study, accelerated life test theory was used to design the reliability acceptance test scheme based on operational environment analysis and failure mode effect analysis (FMEA) of controller. By accelerating temperature and relative humidity, and keeping typical vibration and voltage level, an improved time-censoring scheme was obtained based on high temperature and humidity accelerated factors. Results This paper presented an acceptance test scheme of triple comprehensive test (on voltage), including stress profile, accelerated coefficient and parameters and the methods of estimating MTBF based on test results. The integrated accelerated factor of high temperature and humidity was 142.14. Both of producer’s risk α and user′s risk β were 30%. The discrimination ratio d was 2. The minimum acceptable value of MTBF was 30 000 h. The accumulated test time under accelerated condition was 780.92 h. The permissible number of failures was 2. Conclusion This method can obtain the estimated values of reliability indicators and make the judgment of acceptance or rejection in a short period of test time. After acceleration, the acceptance test time of controller is decreased from 111 000 h to 780.92 h which can meet the actual acceptance requirements. |
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