Technical Paper
Application of motor load emulation techniques for EPB(Electric Parking Brake) system tests
2024-04-09
2024-01-2274
The EPB(Electric Parking Brake) system is divided into two parts based on VDA305-100 recommendation. One part of the EPB system contains the parking brake actuator, caliper and actuation logic (parking brake controller, PBC). The second part of the EPB system is called to the HOST which contains the EPB power electronics, necessary peripherals and controls the functions that the driver can experience. According to the VDA recommendation, the PBC is responsible for recognition of a fault in the parking brake actuator based on the measured values transmitted from HOST such as EPB motor voltage and current. Due to mechanical fault injection limitations, failsafe tests require physically electrical emulation caused by parking brake actuator faults to verify the parking brake actuator fault detection and management algorithm.