基于多信号流图模型的导弹系统级测试性设计研究

针对导弹长时间贮存,一次性使用特点,开展测试性设计工作难度较大的问题,提出采用多信号流图模型对导弹系统进行测试性设计研究.根据故障模式、影响及危害性分析(FMECA)信息确定系统的故障模式,采用多信号流图模型建立导弹系统级测试性模型,根据可达性算法得到故障-测试相关性矩阵,确定系统的测试性指标.考虑到现有算法如遗传算法...

Research on testability design method of missile systembased on multi-signal model

Aiming at the problem that missiles are difficult to carry out testability design due to their own characteristics, a multi-signalmodel for testability design of missile systems is proposed. Based on the FMECA information, the failure mode in the system isdetermined, and the multi-signal model is used to establish a test model of the missile system. The correlation matrix of the fault-test isobtained and the system testability index is determined. Considering the shortcomings of existing algorithms such as genetic algorithm andbinary particle swarm algorithm, a hybrid discrete binary particle swarm-genetic algorithm is proposed to optimize the test, reduced 22candidate tests to 14, greatly reducing the number of tests. Finally, the experimental results show that the proposed algorithm can meetthe accuracy requirements of testability index, and effectively reduce the number of tests and test costs.