End of travel system and method for steer by wire systems
First Claim
1. A system for providing an end of travel feedback from a road wheel to a driver of a vehicle, the vehicle including a steer by wire system, the system comprising:
- a steering wheel configured to control the steer by wire system;
a steering shaft coupled to the steering wheel;
a first motor coupled to the steering shaft to provide road feel resistance to the driver;
a brake coupled to a shaft of the first motor adapted to provide mechanical resistance when the road wheel is in an end of travel conditiona torque transfer mechanism configured to multiply a torque between the shaft of the first motor and the steering shaft.
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Accused Products
Abstract
The present invention provides a system for generating an end of travel feedback to the driver of a vehicle where the vehicle includes a steer by wire system. The system includes a steering wheel, a steering shaft, a motor, and a brake. The steering wheel is configured to control the steer by wire system. The steering shaft is coupled to the steering wheel and rotates in conjunction with the steering wheel. To provide road feel resistance to the driver, the motor is coupled to the steering shaft. Further, the brake is coupled to a shaft of the motor and is adapted to provide mechanical resistance when the road wheel is at an end of travel position.
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Citations
25 Claims
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1. A system for providing an end of travel feedback from a road wheel to a driver of a vehicle, the vehicle including a steer by wire system, the system comprising:
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a steering wheel configured to control the steer by wire system; a steering shaft coupled to the steering wheel; a first motor coupled to the steering shaft to provide road feel resistance to the driver; a brake coupled to a shaft of the first motor adapted to provide mechanical resistance when the road wheel is in an end of travel condition a torque transfer mechanism configured to multiply a torque between the shaft of the first motor and the steering shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for providing an end of travel feedback to a driver of a vehicle, the vehicle including a steer by wire system and a road wheel, the method comprising the steps of:
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controlling the steer by wire system with a steering mechanism; sensing an angle of the road wheel is at an end of travel position; and engaging a brake coupled to a shaft of a first motor to provide a mechanical resistance to the steering mechanism, wherein the mechanical resistance applied by the brake is multiplied by a torque transfer mechanism between the shaft and the steering mechanism. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification