【摘要】 飞机电源系统机内自检测（Ｂｕｉｌｔ－ｉｎ－ｔｅｓｔ，ＢＩＴ）技术已日益受到人们的重视，文中介绍了ＢＩＴ技术及其四个方面，即：检测技术、信号处理技术、故障识别和诊断技术、故障处理技术。阐述了飞机电源已经历了四代发展及其已实现了数字化、标准化的现状，指出飞机电源ＢＩＴ技术的核心是故障诊断技术，并对我国今后飞机电源ＢＩＴ技术的发展提出了建议，指出了发展方向。更多还原

【Abstract】 Great importance is increasingly attached to Built in test (BIT) technology used in aeronautical electrical power system. This paper introduces the BIT technology and its four parts, as detection technology, signal processing technology, fault identification & diagnosis technology, and fault processing technology. It is elaborated that in abroad, the BIT technology used in aeronautical electrical power system has been going through four generations and has become digital and standard. This paper points out that the kernel of the BIT technology is fault diagnosis, and suggests that we should pay more attention to the BIT technology, especially the fault diagnosis technology.更多还原