Power steering device
First Claim
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1. A power steering device mounted on a vehicle, comprising:
- a variable transmission ratio mechanism which changes a transmission ratio between a real steering angle and a steered angle;
a friction torque setting unit which sets a friction torque applied to a steering wheel based on an operating condition 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 a 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.
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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.
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Citations
11 Claims
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1. A power steering device mounted on a vehicle, comprising:
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a variable transmission ratio mechanism which changes a transmission ratio between a real steering angle and a steered angle; a friction torque setting unit which sets a friction torque applied to a steering wheel based on an operating condition 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 a 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification