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Reconfigurability evaluation in the design stage of satellite attitude control system is effective for building up the ability of disposing fault on orbit. This paper proposes an approach to evaluate and analyze the reconfigurability of the sensor subsystem under faulty conditions. The description of the reconfigurability in the presence of single function-module fault is formulated. An index is introduced to describe the reconfigurability of the system. The characteristic of the component and function-module is described by means of a parameter matrix, whose relation with the controllability Gramian of the attitude control system is given. Depth-first- search algorithm is proposed to calculate the reconfigurability parameter matrix. Simulation results on sensor subsystem illustrate the efficiency of the proposed approach, which provides an engineering method to evaluate the reconfigurability.

Reconfiguration Analysis Based on Single Function Module Fault for Satellite Sensor Subsystems