分布式机载供电设备测试性分析与设计

Analysis and design of testability for distributed airborne power supply equipment

开展测试性设计可以有效提高设备的可靠性、故障诊断及容错能力,显著降低设备寿命周期的费用。针对分布式机载供电设备,给出了一套完整的测试性设计方法,首先对测试点的设置方法进行阐述和分析,得出输入电压、输出电压、输出电流、温度以及CAN总线的测试点布局;其次从测试时机、实现方法、故障判据以及防虚警措施几个维度对每个测试点进行具体分析;最后给出每个测试点的具体检测实现电路,这些电路已在多个机载平台得到应用,对其他类似设备具有借鉴意义。

Carrying out testability design can effectively improve equipment reliability,fault diagnosis and fault tolerance,and can significantly reduce equipment life cycle costs.For distributed airborne power supply equipment,a complete set of testability design methods are given.First,the test point setting method is explained and analyzed,and the input voltage,output voltage,output current,temperature and CAN bus test are obtained.Secondly,each test point is specifically analyzed from the dimensions of test timing,implementation method,failure criterion and anti-false alarm measures.Finally,the specific detection circuit for each test point is given.These circuits have been successfully applied to multiple airborne platforms,which has reference significance for other similar equipment.