Rear wheel steering-by-wire drive device and steering method of multi-axis hub motor driven vehicle

A technology of motor drive and drive device, which is applied in the direction of electric steering mechanism, power steering mechanism, vehicle components, etc. It can solve the problems of complex mechanical structure of rear axle steering drive device and poor steering torque distribution accuracy, so as to improve maneuverability As well as stability, vehicle structure optimization, and the effect of light weight

Active Publication Date: 2019-07-05
JILIN UNIV
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Problems solved by technology

[0008] The present invention designs and develops a steering method for the rear wheel steer-by-wire drive device of a multi-axis hub motor driven vehicle. One of the purposes of the present invention is to solve the complex mechanical structure of the rear axle steering drive device and the distribution of steering torque during the steering process of a multi-axis vehicle The problem of poor precision

Method used

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  • Rear wheel steering-by-wire drive device and steering method of multi-axis hub motor driven vehicle
  • Rear wheel steering-by-wire drive device and steering method of multi-axis hub motor driven vehicle
  • Rear wheel steering-by-wire drive device and steering method of multi-axis hub motor driven vehicle

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Embodiment Construction

[0065] The invention provides a driving device and a method for realizing multi-axle steering vehicle rear wheel steer-by-wire, which realizes all-wheel steering of multi-axle vehicles to reduce the turning radius, and cancels the mechanical mechanism between the main steering shaft and auxiliary steering shaft of traditional multi-axle steering vehicles. The structure does not require additional components such as steering motors, and at the same time reduces the hand force required for the steering wheel when turning, and maintains accurate road feel feedback.

[0066] The specific structure includes a chassis 110, symmetrically arranged on both sides of the car body, and eight wheels 120 driven by in-wheel motors. The front axle is the main steering axle. The steering system is basically the same as that of ordinary vehicles. 150, steering transmission shaft 160, steering gear 170, steering rocker arm 180, steering tie rod 190, and steering knuckle arm 220 are respectively c...

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Abstract

The invention discloses a rear wheel steer-by-wire driving device of a multi-axle hub-motor drive vehicle; the rear wheel steer-by-wire driving device comprises: rear axle steering trapezoidal arms relatively rotationally connected with a rear axle; rear axle steering transverse pull bars relatively rotationally connected with the rear axle steering trapezoidal arms respectively; steering angle sensors mounted on a steering column in a steering system and rear wheel steering main pins respectively; rear wheel steering controllers electrically connected with the steering angle sensors and the rear axle hub motors respectively to control steering angles of rear wheels, wherein the rear axle steering trapezoidal arms and the rear axle steering transverse pull bars form a deformable trapezoid,the rear wheels on the rear axle are deflected under the action of the deformable trapezoid, and the steering angle sensors are used for monitoring steering angle of a steering wheel and deflection angles of the rear wheels and transmitting signals to the rear wheel steering controllers. The invention discloses a steering method of the rear wheel steer-by-wire driving device of the multi-axle hub-motor drive vehicle.

Description

technical field [0001] The invention relates to the technical field of multi-axis vehicle steering, in particular to a steering-by-wire driving device and a steering method for a rear wheel of a vehicle driven by a multi-axis hub motor. Background technique [0002] A multi-axle vehicle refers to a vehicle with more than two axles. In order to improve its dynamic performance and load capacity and reduce damage to the road surface, heavy-duty transport vehicles usually adopt multi-axis drive. Most heavy-duty vehicles have more than two steering axes, and generally in order to ensure the stability of the vehicle when driving at high speeds and to shorten the turning radius when driving at low speeds, the same phase steering and reverse steering are used respectively, and the steering performance directly affects the vehicle. Excellent maneuverability, handling stability and economical use. At the same time, in the 21st century, human beings are facing severe environmental an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D7/14B62D5/04
CPCB62D5/046B62D7/144
Inventor 靳立强田端洋张志阳褚学聪彭祥龙
Owner JILIN UNIV
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