SBW 시스템 개발을 위한 조향 반력 HILS 구축에 관한 연구

SBW system have advantages of space and fuel efficiency because it is designed more simple than MDPS. But, The safety is accompanied because of simplification of the mechanical structure. So, Intensive evaluation of fault diagnosis and safety at the development phase is needed. This research introduce a steering reaction HILS for evaluation in various driving conditions. The reaction equipment have to added because there is no connection between Rack and pinion. Reaction force is generated by servo motor and the control value of reaction force is realized by Rack force model using CarSim and Matlab/simulink. The Rack force is estimated by longitudinal force and lateral force of tires. As a result we can obtain steering feeling similar to data of real vehicle adapted EPS.