HILS를 이용한 EPS 제어 Logic 의 신뢰성 확보 방안

The EPS(Electric Power Steering) system is superior to conventional hydraulic power steering system in the aspect of fuel economy, environmental preservation and assembly convenience and it is foundation for intelligent vehicle such as electric vehicle, active steering and steer by wire. In this paper, development of EPS control logic with HILS (Hardware In the Loop Simulation) is introduced. EPS and EPS ECU(Electronic Control Unit) work as real hardware and the other parts of vehicle are simulated as mathematical model. HILS oilers circumstances for efficient development of control logic and reliability of EPS. Simulating dangerous test as substitute for vehicle test, diagnosis and fail-safety function can be 0firmed up and the cause of error can be searched definitely owing to revivability of test. In addition, various tests can be taken efficiently with test automation.