Design of sensor location based on directed graph of the aircraft components on diagnostic criteria

This paper accomplishes the study of sensor location satisfying the diagnostic criteria which include detectability and isolability. Traditionally, the directed graph (DG) is used in the sensor location satisfying the diagnostic criteria. However, in most cases, the spacecraft components are complex and the roots are too excessive. It is hard to develop the bipartite graph when using the DG method. So a description using the incidence matrix is put forward, which is easy to program and extend. At the meantime, the transition relation-ship between the bipartite graph and the incidence matrix is presented. Finally, the sensor location problem based on the diagnostic criteria of the fly wheel is resolved. The results demonstrate that the method is valuable for sensor location of spacecraft components.