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Difference active steering system of electric wheel driving automobile and control method thereof

A technology of active steering and electric wheels, which is applied in the direction of automatic steering control components, non-deflectable wheel steering, steering mechanism, etc., and can solve the problem of high energy consumption of steering

Active Publication Date: 2011-08-31
武汉经开科创运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sliding steering needs to overcome a large resistance, and the steering consumes a lot of energy

Method used

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  • Difference active steering system of electric wheel driving automobile and control method thereof
  • Difference active steering system of electric wheel driving automobile and control method thereof
  • Difference active steering system of electric wheel driving automobile and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] This embodiment is composed of left steering electric wheel, right steering electric wheel, differential force active steering mechanism and differential force active steering control system; left steering electric wheel, right steering electric wheel are connected with differential force active steering mechanism; differential force active steering mechanism It is connected with the steering axle of the automobile; the left steering electric wheel is the electric wheel on the same side as the steering wheel; the left steering electric wheel has a built-in left hub motor, and the right steering electric wheel has a built-in right hub motor, and the left and right hub motors are driven by differential force Steering control system controls.

[0070] figure 1 It is a schematic diagram of a differential force active steering control system according to an embodiment of the present invention, including: a vehicle speed sensor for measuring the actual longitudinal speed of t...

Embodiment 2

[0101] The principle and structure of this embodiment are basically the same as that of Embodiment 1, the difference is that: the automobile steering axle adopts independent suspension, and the differential force active steering mechanism such as image 3 As shown, it is made up of steering trapezoidal mechanism, left and right steering knuckles (3,11) and left and right kingpins (4,10), rocking bar (15) and suspension left and right swing arms (22,18), The steering trapezoidal mechanism is composed of left and right steering tie rods (7-1, 7-2) and left and right trapezoidal arms (5, 9).

[0102] Because the steering axle adopts independent suspension, the left and right steering electric wheels (1, 13) all need to move independently relative to the vehicle frame (20), so the steering trapezoidal mechanism must be divided into left and right two sections. The front end of the rocker (15) is hinged on the vehicle frame (20), and the rear end of the rocker (15) is connected wit...

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Abstract

The invention provides a difference active steering system of an electric wheel driving automobile and a difference active steering control method. The difference active steering system consists of a left steering electric wheel, a right steering electric wheel, a difference active steering mechanism and a difference active steering control system; the difference active steering control method uses a steering angle of the steering electric wheels and a vehicle speed dual PID (proportion integration differentiation) control arithmetic to determine target values of the torques of left and righthub electric motors in the left and right steering electric wheels. The novel steering method provided by the invention is applied to the vehicle having a steering mechanism; each steering electric wheel rotates around respective main pin to form a coordinated steering angle according to the driving force difference of the left and right steering electric wheels and the limitation of a trapezoidal steering mechanism, so that the vehicle is steered; and the active steering mechanism is simple and has steering energy consumption.

Description

technical field [0001] The invention relates to an electric vehicle, in particular to a steering system of an electric vehicle, in particular to a steering system of an electric wheel drive vehicle. Background technique [0002] Electric vehicles have the advantages of energy saving and environmental protection, and are a trend in the development of current automotive technology. The electric wheel drive vehicle is a new type of electric vehicle. The drive motor is mounted on the wheel directly or through a reduction mechanism to form an electric wheel. The layout of the electric wheels is very flexible, and can be used as two front wheels, two rear wheels or four wheels of the electric vehicle, correspondingly making the electric vehicle a front-wheel drive, rear-wheel drive or four-wheel drive vehicle. [0003] Compared with internal combustion engine vehicles and single-motor drive electric vehicles, electric wheel drive vehicles have unique technical characteristics an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D11/04B62D7/00B62D7/18B62D6/00B62D101/00B62D113/00B62D109/00
Inventor 喻厚宇黄妙华李波田哲文张振国陈湘云颜犇犇
Owner 武汉经开科创运营有限公司
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