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Vehicle steering system optimization method

An automobile steering system and steering system technology, applied in the field of automobile steering system optimization, can solve the problems such as the unfavorable service life of steering pumps or motors, the influence of steering system steering accuracy and driving comfort, and the fluctuation of steering column torque. Achieve the effects of easy understanding and mastery, reasonable spatial distribution, and improved input and output isokinetics

Active Publication Date: 2016-03-30
FJ MOTOR GRP YUDO NEW ENERGY AUTOMOBILE CO LTD
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Problems solved by technology

[0009] Therefore, if the design of the steering column is unreasonable, there will be obvious problems of different input and output speeds, and there will be obvious fluctuations in the rotational torque of the steering column, which not only affects the steering accuracy and driving comfort of the steering system, but also It will adversely affect the service life of components such as steering pumps or motors

Method used

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Embodiment approach

[0071] Another embodiment provided by the present invention is: a method for optimizing an automobile steering system, comprising:

[0072] First select the design structure of three universal joints in space, and make a preliminary selection of the hard points for the steering column arrangement;

[0073] Judging whether the steering system satisfies the spatial distribution condition: the angle α1 between the input shaft and the transmission shaft and the angle α2 between the transmission shaft and the output shaft are not less than 150°, and the difference between α1 and α2 is not greater than 20°;

[0074] If so, according to the formula:

[0075] and

[0076] Judging whether the steering system satisfies the input-output constant velocity condition, wherein, the ω1 is the angular velocity of the input shaft, ω3 is the angular velocity of the output shaft, and α 1 is the angle between the input shaft and the transmission shaft, α 2 is the angle between the transmiss...

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Abstract

The present invention discloses a vehicle steering system optimization method. The method comprises: determining a design of a steering system by using a spatial distribution condition and an input and output constant velocity condition; adjusting the steering system by adjusting an arrangement hard point of a steering pipe column and changing a design structure of the steering system so as to enable the steering system to simultaneously meet the spatial distribution condition and the input and output constant velocity condition; and performing rotating simulation on the steering system to calculate the fluctuation rate of the steering system. According to the vehicle steering system optimization method provided by the present invention, the input and output constant velocity property of the steering system is effectively improved, and the fluctuation property of rotational torque is reduced.

Description

technical field [0001] The invention relates to an automobile steering system, in particular to an optimization method for an automobile steering system. Background technique [0002] Steering force is an important index to evaluate the steering performance of the vehicle. The magnitude of the steering force and torque fluctuation directly affect the driving comfort. With the improvement of people's requirements for driving comfort, the requirements for steering are also getting higher and higher. Now the mainstream steering system of passenger cars is EHPS (Electronic Hydrostatic Power Steering) or EPS (Electric Power Steering), which can improve steering comfort and contribute to energy saving and environmental protection. There are also significant effects. But both EHPS and EPS systems are inseparable from the steering transmission mechanism - the steering column. The quality of the steering column layout design directly affects the steering force transmission. If the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20
Inventor 董振刘心文吴贵新
Owner FJ MOTOR GRP YUDO NEW ENERGY AUTOMOBILE CO LTD
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