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Multi-mode four-wheel steering system and steering mode control method

A four-wheel steering, multi-mode technology, applied in steering mechanisms, steering rods, electric steering mechanisms, etc., can solve problems such as poor vehicle reliability and hydraulic oil leakage, enhance reliability, improve handling stability, and increase driving pleasure. Effect

Active Publication Date: 2016-12-07
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a multi-mode four-wheel steering system and a steering mode control method to solve the hydraulic oil leakage of the four-wheel steering system in the above-mentioned prior art when the vehicle is in use. , poor vehicle reliability, etc.

Method used

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Embodiment Construction

[0025] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

[0026] refer to figure 1 As shown, a multi-mode four-wheel steering system of the present invention includes: a front-wheel steering system and a rear-wheel steering system; the front-wheel steering system is an active steering system integrating an electric power steering system, which includes: a steering wheel , steering wheel angle sensor, input shaft 2, torque sensor 3, double planetary row 6, front wheel steering motor 4, worm gear reduction mechanism 8, power assist motor 7, electromagnetic clutch 9, output shaft 10, front wheel rack and pinion steering Device 11, front wheel steering tie rod 12, front wheel tire 13, front wheel steering ECU17; steering wheel 1, input shaft 2, torque ...

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Abstract

The invention discloses a multi-mode four-wheel steering system and a steering mode control method. Three steering systems comprising an electric booster steering system, a driving front wheel steering system and a wire-controlled steering system are combined in the multi-mode four-wheel steering system; based on a four-wheel steering platform, the advantages of the three steering systems can be exerted; besides, a vehicle can adjust the working mode according to the driving state information of the vehicle, so that driving pleasure of a driver can be promoted, and the steering flexibility when the vehicle travels at a low speed and the control stability when the vehicle travels at a high speed can also be improved by the four-wheel steering.

Description

technical field [0001] The invention belongs to the technical field of four-wheel steering, and specifically refers to a multi-mode four-wheel steering system and a steering mode control method. Background technique [0002] Four-wheel steering technology (4WS) is not an emerging technology. As early as the beginning of the 20th century, the four-wheel steering patent certificate issued by the Japanese government started people's research on four-wheel steering technology. The system can not only improve the flexibility of the car at low speeds, but also improve the stability and safety of the car at high speeds. [0003] The four-wheel steering system can be divided into an active rear-wheel steering system (that is, a traditional four-wheel steering system) and a full four-wheel steering system (that is, a four-wheel active steering system based on wire control technology). [0004] The active rear wheel steering system can be divided into mechanical four-wheel steering s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D7/14
CPCB62D5/0421B62D5/0463B62D7/14
Inventor 赵万忠秦晓熙王春燕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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