METHOD AND APPARATUS FOR ON-BOARD/OFF-BOARD FAULT DETECTION

摘要

A vehicle includes a plurality of subsystems that are monitored during on¬ going operation. A method for monitoring a subsystem includes monitoring states of commanded and observed parameters for the subsystem. Deviations in the observed parameters are determined off-board the vehicle. The deviations are employed to determine magnitudes of subsystem operating signatures off-board the vehicle. The subsystem operating signatures are employed to identify presence of a subsystem fault and isolate the subsystem fault off-board the vehicle. The presence of the isolated fault is communicated to the vehicle.