Multidimensional Fault Characterization Model Based Fault Identification for New Type Dissimilar Redundant Actuation System

In order to support the fault-tolerant control (FTC) design for the new type dissimilar redundant actuation system (NT-DRAS) used in near space vehicles, this paper proposed a multidimensional fault characterization model based fault identification method. The NT-DRAS model is first introduced as well as the operating modes. The fault occurrence mechanism for the considered faults are then analyzed. Followed by the analysis results, the multidimensional fault characterization based fault reasoning mechanism is presented, and then the multidimensional fault characterization models as well as the discrimination algorithm used to identify the fault modes are presented. Simulation results are performed finally to verify both the analyzed fault occurrence mechanism and the proposed fault identification effectiveness.