Novel rear wheel active steering device and control method thereof

A technology for active steering and control of rear wheels, applied in electric steering mechanisms, steering mechanisms, steering rods, etc., can solve the problems of dullness and inflexibility, heavy braking system burden, large turning radius, etc., and achieves compact structure and high sensitivity. Effect

Pending Publication Date: 2019-06-14
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this steering method is assisted by various power steering methods, it still has the characteristics of slow and inflexible steering operation on narrow roads with large curvature, long steering time, frequent movement of the steering wheel, large turning radius, and heavy operating burden for the driver. Disadvantages such as heavy burden on the braking system, loss of power, and frequent driver operations when driving at high speeds

Method used

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  • Novel rear wheel active steering device and control method thereof
  • Novel rear wheel active steering device and control method thereof
  • Novel rear wheel active steering device and control method thereof

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Embodiment Construction

[0077] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0078] Such as figure 1 As shown, it is an overall structural diagram of the arrangement of the novel rear wheel active steering device according to the present invention on the rear axle. 400, the left and right steering tie rods 600, the left and right wheel steering knuckle arms 700, and the left and right rear wheels 100 form. Wherein, the steering motor 200 is horizontally fixed on the sub-frame 720 of the rear axle, and its axis is arranged coaxially or parallel to the longitudinal axis of the vehicle. The steering motor 200 and the motor reduction mechanism 300 are arranged in sequence along its axial direction, and the output shaft 260 of the steering motor 200 is splined to the input end of the motor reduction mechanism 300 , and the motor reduction mechanism 300 ac...

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PUM

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Abstract

The invention discloses a novel rear wheel active steering device. The device comprises a rear axle sub-frame, a motion conversion mechanism which is arranged on the upper portion of the cross beam ofthe rear axle sub-frame, two steering cross pulling rods of which the ends are respectively connected with two ends of the motion conversion mechanism and two wheel steering knuckle arms of which theends are respectively connected with the other ends of the steering cross pulling rod and the other ends are respectively connected with two rear wheels; the motion conversion mechanism includes a motion conversion mechanism housing with a first accommodating cavity, a crank, an eccentric wheel, in which a through hole is axially formed in an eccentric point, a crank shaft with one end fixedly connected with the through hole and a sliding block which is slidably disposed in a first accommodating cavity and has a second accommodating cavity. The invention also provides a control method for thenovel rear wheel active steering device, and the method can precisely control the steering angle required for rear wheels of an automobile according to the specific automobile speed, the yaw rate andthe front wheel rotation angle when the automobile turns.

Description

technical field [0001] The invention relates to the field of automobile steering safety, in particular to a novel rear wheel active steering device and a control method thereof. Background technique [0002] Since the birth of automobiles, its main steering mode has always been the front wheel steering. Today, on the one hand, the high speed of automobiles has higher and higher requirements for driving safety and stability; on the other hand, the narrow space of urban roads also requires higher and higher steering flexibility for automobiles, and the traditional front-wheel steering has gradually been unable to meet the requirements. What people want from cars. In a traditional front-wheel steering vehicle, the driver manipulates the steering wheel to control the front wheels through the steering trapezoidal mechanism to change the direction, and the rear wheels are fixed in direction and do not turn. Although this steering method is assisted by various power steering meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D7/00
Inventor 王军年颜庭旭杨玉珩王子祥克江陶书鑫庞舒月王洪宇
Owner JILIN UNIV
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