Function allocation of satellite fault diagnosis based on fitts table and optimization solution

Satellite fault diagnosis (FD) is composed of the autonomous FD and the ground FD, and they play different roles due to their diversity of information acquisition, resource allocation and manual intervention. In order to enhance the overall fault diagnosis performance, the function allocation method combing Fitts table and optimization solution is presented in this paper. The influence factors are analyzed comprehensively including the fault mode, the depth demand of fault diagnosis, the fault diagnosis method and the realization condition. And then, according to the fault severe degree, occurrence probability and the fault diagnosis remand, a series of principles are given about the faults which are easy to be distributed and the coarse function allocation based on the Fitts table is supplied. Afterward, with the accuracy and real-time of fault diagnosis methods as the optimization object and with the occupied resource of fault diagnosis methods as the constrained condition, the elaborate function allocation based on the optimization solution is proposed. Finally, by considering the satellite fault modes, the efficiency of the proposed method is illustrated.