Variable Steering Ratio Design for Vehicle Steer-by-Wire System with Joystick

Paper #:
  • 2016-01-0455

Published:
  • 2016-04-05
DOI:
  • 10.4271/2016-01-0455
Citation:
Zheng, H., Hu, J., and Yang, S., "Variable Steering Ratio Design for Vehicle Steer-by-Wire System with Joystick," SAE Technical Paper 2016-01-0455, 2016, doi:10.4271/2016-01-0455.
Pages:
7
Abstract:
Steering-by-wire(SBW) system makes the vehicle not constrained by the steering wheel control. Joystick, button and touch screen can all be used for automobile steering control. Using joystick to achieve steering operations has its unique advantages and many problems which are needed to be resolved at the same time. This paper firstly introduced the components of traditional steering wheel steer-by-wire system, then came up with the difference between joystick steer-by-wire system and traditional steer-by-wire system about transmission ratio, transmission ratio control strategy of joystick steer-by-wire system is proposed at the same time. At last, this paper studied driver’s busy degree when the vehicle running with a big turning radius at low speed and the effect of different angle transmission ratio on vehicle handing stability when the vehicle running at intermediate speed. The result shows that the angle transmission ratio with constant yaw rate which is suitable for steering wheel can’t meet the basic requirement of joystick steering.
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