航天继电器中多余物自动测试系统的研究  

A Research on the Automatic Test System for the Remainder Particle Signals in Spacecraft Relays

作　　者：董加勤[1] 洪文学[1] 赵新民[1] 

机构地区：[1]哈尔滨工业大学自动化测试与控制系,哈尔滨150001

出　　处：《电子测量与仪器学报》1998年第4期41-46,共6页Journal of Electronic Measurement and Instrumentation

摘　　要：微粒碰撞噪声检测（PIND：ParticleImpactNoiceDetection）是一种被用来识别密封元器件中可移动多余物（微粒）的无损检测手段。这些多余物会引起元器件短路或随机短路失效。由于PIND测试局限于人工判别，所以其结论具有主观性，判别的精度亦低于50％。本文研究了航天继电器中多余物的自动检测系统，提出自动检测系统的构成框图，并就框图中各个组成部分的实现进行了探讨，着重研究了继电器信号的特征提取问题。Particle Impact Noice Detection (PIND) is undamaged method for testing loose particles inside the cavities of the electronic elements. These reminders will cause short circuit in the electronic elements. Because the traditional test method is accomplished artificaially, the test result is subjective, the accuracy is lower than 50%.This paper studies the automatic test system for the remainder particle signals in spacecraft relays, proposes the architecture of it, and discusses the realization of every part in detail,plays emphasis on the feature extraction of the remainder particle signals.

关 键 词：航天仪表 继电器 自动检测 特征提取 PIND 

分 类 号：V44[航空宇航科学与技术—飞行器设计]