Design for test-node and diagnosis strategy of the armored vehicles electrical system

Testability analysis and fault diagnosis strategy design are important parts of testability design. Whether designing an optimum diagnostic strategy through testability analysis directly affects the improvement of fault detection and isolation ability for systems. Firstly, in the paper, the composing principle and work flow of the armored vehicles electrical system were introduced. Aiming at the shortcoming that the system´s fault detection ability was insufficient and didn´t has the ability of fault isolation, topological graph is used on the design of system´s testability model, analysing the reliability effect of the system. At last, a reasonable and effective diagnosis strategy was presented.