Electric vehicle four-wheel steering system and control method

A technology for four-wheel steering and electric vehicles, which is applied to steering mechanisms, steering rods, vehicle components, etc. It can solve problems such as high risk, inability to respond differently, and no speed sensor, etc., achieving high safety and security Effect

Pending Publication Date: 2017-09-19
LIAOCHENG ZHONGTONG LIGHT BUS CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The patent document with the application number 200510071886.X discloses a four-wheel steering device for electric vehicles. Its technical solution includes a front wheel steering device, an electronic control unit, and a rear wheel steering device, which is confirmed as the cl...

Method used

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  • Electric vehicle four-wheel steering system and control method
  • Electric vehicle four-wheel steering system and control method
  • Electric vehicle four-wheel steering system and control method

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Embodiment Construction

[0038] Below in conjunction with accompanying drawing and embodiment, the embodiment of the present invention is described in detail as follows:

[0039] as attached figure 1 As shown, a four-wheel steering system for an electric vehicle includes a front-wheel steering system and a rear-wheel steering system.

[0040] The front wheel steering system includes: a steering wheel 101, an angle sensor 103, a vehicle controller 105, an electric power steering pump 102, and a front wheel steering mechanism 103;

[0041] The rear wheel steering system includes: a steering wheel 101, an angle sensor 103, a vehicle speed sensor 104, a vehicle controller 105, a rear wheel steering controller 106, a rear wheel steering motor 107, a position sensor 108, and a rear wheel steering mechanism 109.

[0042] The vehicle controller 105 may also be referred to as VCU for short.

[0043] Both the front wheel steering mechanism 103 and the rear wheel steering mechanism 109 include a steering mach...

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PUM

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Abstract

The invention relates to an electric vehicle four-wheel steering system and a control method. The four-wheel steering system includes a front-wheel steering system and a rear-wheel steering system; wherein, the front-wheel steering system includes a steering wheel, an angle sensor, a vehicle controller, an electric power steering pump, and a front-wheel steering mechanism; The steering system includes a steering wheel, an angle sensor, a vehicle speed sensor, a vehicle controller, a rear wheel steering controller, a rear wheel steering motor, a position sensor, and a rear wheel steering mechanism. The control method includes a front-wheel steering system control method and a rear-wheel steering system control method, wherein in the rear-wheel steering system control method, different control actions can be selected according to the vehicle speed, and the steering angle can also be corrected according to the feedback information. Guarantee the turning accuracy and improve the safety when turning.

Description

technical field [0001] The invention relates to the field of electric vehicle parts and control systems, in particular to an electric vehicle four-wheel steering system and a control method. Background technique [0002] The traditional car steering system is the front wheel steering, and the rear wheels do not participate in the steering; most electric vehicles also use such a steering system. Such a steering system causes the car to have a larger turning radius when turning, and the steering is inflexible, especially in narrow downtown areas or parking lots, where the steering of the vehicle is relatively restricted. [0003] In order to overcome the deficiency of the front wheel steering system, a four-wheel steering system has emerged in the field of electric vehicle parts. [0004] The patent document with the application number 200510071886.X discloses a four-wheel steering device for electric vehicles. Its technical solution includes a front wheel steering device, an...

Claims

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Application Information

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IPC IPC(8): B62D7/15
CPCB62D7/1581B62D7/159
Inventor 囤金军赵红光李阳翁福建李晓辉周传东付志强高顺来田鹏武纪强于东超
Owner LIAOCHENG ZHONGTONG LIGHT BUS CO LTD
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