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Description of Steering Feel in Steer-by-Wire System Using Series Elastic Actuator

As the vehicle system has developed gradually, the steering system of the vehicle has also developed. A steer-by-wire(SBW) system is one of the examples. The SBW is a system that replaces the steering column that connects the driver to the wheel with a motor. Since the absence of a mechanical element connecting the steering wheel to the tire, it becomes important to deliver a driverâ€™s steering angle to the vehicle and describe the steering feel generated by road condition. In this paper, it is represented that an artificial steering feel is generated through torque-based admittance control, using a series elastic actuator which made for consideration of torque control. The effects of linear and nonlinear parameter including inertia, viscous friction, coulomb friction, and spring in steering model are represented by changing the range.