Model-based sensor fault detection algorithm design for Electro-Mechanical Brake

EMB (Electro-Mechanical Brake) can be applied to the intelligent vehicles because brake-by-wire units are lighter in weights and have faster response compared to conventional hydraulic brake units. For the implementation of the EMB systems, reliable and robust fault detection and diagnosis methods become increasingly important. In this study, a sensor fault diagnosis method is proposed with parity space and observer approach to detect faults in motor current sensor, speed (or position) sensor and clamping force sensor. The proposed method is verified through the closed loop simulation using Matlab/Simulink and the simulation result is compared with HILS bench test results.