基于元器件应力法的微波等离子体质谱仪控制系统可靠性预计  

Reliability Prediction of Mass Spectrometer Electronic Control System based on Component Stress Method

作　　者：崔钰鹏 周泽桐 吴佐霞 范涵逍 张红刚 CUI Yu-peng;ZHOU Ze-tong;WU Zuo-xia;FAN Han-xiao;ZHANG Hong-gang(Scientific Verification&Testing Engineering Technology Co.Ltd(Guang Dong),Guangzhou 510000;North China University of Technology,Beijing 100144;Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology,of Analysis,Guangdong Academy of Sciences(China National Analytical Center,Guangzhou),Guangdong Provincial Engineering Research Center of Rapid Testing Instrument for Food Nutrition and Safety,Guangzhou 510070)

机构地区：[1]广东科鉴检测工程技术有限公司,广州510663 [2]北方工业大学,北京100144 [3]广东省科学院测试分析研究所(中国广州分析测试中心)广东省化学测量与应急检测技术重点实验室广东省食品营养与安全快速检测工程技术研究中心,广州510070

出　　处：《环境技术》2024年第5期34-39,共6页Environmental Technology

基　　金：广东省重点研发计划精密仪器设备专项,项目编号:2022B0303030003。

摘　　要：在微波等离子体质谱仪控制系统的设计阶段,元器件应力法是一种有效的获取设计方案可靠性指标的预计方法,然而,元器件应力法直接求和获取同类型元器件总失效率的方法会导致总失效率标准差的线性上升,给预计结果带来不确定性。本文根据总失效率及其标准差采用基于置信上限的估计方法,使预计结果具有更高的置信水平,最后实现了控制系统的可靠性预计,并根据预计结果提出了优化方案。In the design stage of microwave plasma mass spectrometer control system,the component stress method is an effective method to obtain the reliability index of the design scheme.However,the method of directly summing the component stress method to obtain the total failure rate of the same type of components will lead to the linear increase of the standard deviation of the total failure rate,which will bring uncertainty to the predicted result.In this paper,based on the total failure rate and its standard deviation,an estimation method based on confidence upper limit is adopted to make the predicted results have a higher confidence level.Finally,the reliability prediction of the control system is realized,and an optimization scheme is proposed according to the predicted results.

关 键 词：元器件应力法 可靠性预计 置信上限 质谱仪控制系统 

分 类 号：TP202.1[自动化与计算机技术—检测技术与自动化装置]