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US 2011/0209939 A1Published application
Power steering device
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKimiaki Ono, Ikuo Kushiro
Life of this patent
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Abstract
A power steering device is mounted on a vehicle and includes a variable transmission ratio mechanism, a torque applying unit, and an applied friction torque changing unit. The torque applying unit sets an applied friction torque applied to the steering wheel and performs a control of applying the applied friction torque to the steering wheel. The applied friction torque changing unit changes the applied friction torque based on the transmission ratio of the variable transmission ratio mechanism.
Claims4
A power steering device mounted on a vehicle, comprising:
- a variable transmission ratio mechanism which changes a transmission ratio between a steering angle and a steered angle;
- a friction torque setting unit which sets a friction torque applied to a steering wheel based on information indicating a situation of the vehicle;
- a target steering angle setting unit which sets a target steering angle based on the friction torque;
- a torque applying unit which sets an applied friction torque based on a deviation between the target steering angle and the steering angle, and which performs a control of applying the applied friction torque to the steering wheel;
- and
- an applied friction torque changing unit which changes the applied friction torque based on the transmission ratio.
3 more elements
Dependencies are inferred from the claim text.