Systems and methods for hand wheel translational vibration attenuation
First Claim
1. A system for attenuating translational vibration in a steering system, comprising:
- a housing including a fluid chamber, a recess and a mounting bracket that couples the housing to a hand wheel of the steering system, the fluid chamber in communication with the recess;
a mass disposed in the recess of the housing, the mass having a fixed stiffness;
a damping fluid disposed in the housing so as to flow between the fluid chamber and the recess, the mass movable in the damping fluid and the damping fluid having a variable stiffness; and
a control module that determines a translational vibration experienced at the hand wheel and outputs a signal to vary the stiffness of the damping fluid in response to the translational vibration in substantially real-time.
3 Assignments
0 Petitions
Accused Products
Abstract
Methods and apparatus are provided for attenuating translational vibration in a steering system. The apparatus can include a housing having a fluid chamber, a recess and a mounting bracket that couples the housing to a hand wheel of the steering system. The fluid chamber can be in communication with the recess. The apparatus can include a mass disposed in the recess of the housing, which can have a fixed stiffness. The apparatus can include a damping fluid disposed in the housing so as to flow between the fluid chamber and the recess. The mass can be movable in the damping fluid, and the damping fluid can have a variable stiffness. The apparatus can further include a control module that determines a translational vibration experienced at the hand wheel and outputs a signal to vary the stiffness of the damping fluid in response to the translational vibration in substantially real-time.
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Citations
20 Claims
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1. A system for attenuating translational vibration in a steering system, comprising:
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a housing including a fluid chamber, a recess and a mounting bracket that couples the housing to a hand wheel of the steering system, the fluid chamber in communication with the recess; a mass disposed in the recess of the housing, the mass having a fixed stiffness; a damping fluid disposed in the housing so as to flow between the fluid chamber and the recess, the mass movable in the damping fluid and the damping fluid having a variable stiffness; and a control module that determines a translational vibration experienced at the hand wheel and outputs a signal to vary the stiffness of the damping fluid in response to the translational vibration in substantially real-time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A vehicle, comprising:
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a steering system that includes a hand wheel; a vibration attenuation system coupled to the hand wheel about a center line of the hand wheel, the vibration attenuation system including; a housing including a fluid chamber, a recess and having a mounting bracket that couples the vibration attenuation system to the hand wheel; a magneto-rheological damping fluid disposed within the housing so as to flow between the fluid chamber and the recess; and a mass disposed within the recess of the housing and movable within the damping fluid, wherein the viscosity of the damping fluid is adjustable based upon an amount of translational vibration experienced at the hand wheel. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method of attenuating translational vibration in a steering system, comprising:
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receiving an input; based on the input, determining an amount of translational vibration experienced near a hand wheel of the steering system; and outputting a signal to adjust a viscosity of a damping fluid to change a stiffness of a damping system coupled to a portion of the hand wheel, the damping fluid disposed within a housing of the damping system so as to flow between a fluid chamber and a recess of the housing, the damping system including a mass disposed within the recess of the housing. - View Dependent Claims (17, 18, 19, 20)
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Specification