Modeling method for a vehicle steering system
First Claim
1. A modeling method of a steering system for a vehicle, the method comprising the steps of:
- representing a coupled relation between an upper tube and a lower tube of a steering column;
representing said coupled relation between said upper tube and an upper bracket, and a coupled relation between said lower tube and a lower bracket; and
representing the movement of a bearing mounted between a steering axle and a steering column using a cylindrical coordinate system;
wherein, when a spring value of said bearing disposed between said steering axle and said steering column is interpreted using the cylindrical coordinate system, axial spring values of said bearing and circumferential spring values of said bearing are set up to have mutually different values and the circumferential spring values of said bearing are set up to be evenly distributed from the center of said steering axle to the circumferential direction of said steering column, up to as many as a number of springs established at a time of modeling.
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Accused Products
Abstract
A modeling method of a steering system for a vehicle comprises the steps of interpreting a coupled relation between an upper tube and a lower tube comprising a steering column, interpreting a coupled relation between the upper tube and an upper bracket and a coupled relation between the lower tube and a lower bracket, and interpreting the movement of a bearing mounted between a steering axle and a steering column using a cylindrical coordinate, thereby improving credibility relative to the interpretation result of a model When the interpretation result is applied to an actual vehicle, the impact absorption capacity and idle vibration capacity are greatly increased, thereby improving the performance of the overall steering system and ensuring safety to the occupants of the vehicle.
13 Citations
12 Claims
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1. A modeling method of a steering system for a vehicle, the method comprising the steps of:
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representing a coupled relation between an upper tube and a lower tube of a steering column; representing said coupled relation between said upper tube and an upper bracket, and a coupled relation between said lower tube and a lower bracket; and representing the movement of a bearing mounted between a steering axle and a steering column using a cylindrical coordinate system; wherein, when a spring value of said bearing disposed between said steering axle and said steering column is interpreted using the cylindrical coordinate system, axial spring values of said bearing and circumferential spring values of said bearing are set up to have mutually different values and the circumferential spring values of said bearing are set up to be evenly distributed from the center of said steering axle to the circumferential direction of said steering column, up to as many as a number of springs established at a time of modeling. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for modeling a vehicle steering system, comprising:
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generating a representation of a coupled relation between an upper tube and a lower tube of a steering column; generating a representation of a coupled relation between said upper tube and an upper bracket; generating a representation of a coupled relation between said lower tube and a lower bracket; and generating a representation of the movement of a bearing mounted between a steering axle and a steering column using a cylindrical coordinate system; wherein, when a spring value of said bearing disposed between said steering axle and said steering column is represented using the cylindrical coordinate system, axial spring values of said bearing and circumferential spring values of said bearing are set up to have mutually different values, and the circumferential spring values of said bearing are set up to be evenly distributed from the center of said steering axle to the circumferential direction of said steering column, up to as many as a number of springs established at a time of modeling. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification