机载光电成像设备的可测试性系统设计

Design of testable system for airborne optoelectronic imaging equipment

为提高机载光电成像系统的可测试性,对该设备进行了全面的可测试性系统设计。可测试性系统由自测试系统、测试信息口、外部测试系统3部分组成。采用模糊理论与专家系统相结合的方法,解决了目前产品普遍存在的可测试性设计考虑不足、自动化程度不高、故障诊断不到位等问题。实验显示,可测试性系统设计的设备故障诊断率达97%以上,说明在可测试性设计中采用模糊理论与专家系统相结合的方法是行之有效的。

In order to improve the testable ability of an aircraft-borne optoelectronic imaging system, the comprehensive testable system design is proposed for equipment fault diagnosis. The testable system is composed of three parts, an automated test system, a testable interface, and an exterior test system. A special method combining the fuzzy theory and the expert system is used to solve the problems universally existed in the present product, such as the consideration insufficiency of testable design, low automaticity, and the incomplete fault diagnosis. The experiment results show that the fault diagnosis ratio of testable system designed in equipments has been improved to 97%. It is implicated that the testable design combining the fuzzy theory with the expert system is effective.