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A rear wheel active steering device and its control system

A rear wheel active steering and rear wheel steering technology, which is applied in the direction of electric steering mechanism, steering mechanism, steering rod, etc., can solve the problem of not being able to provide large steering torque

Active Publication Date: 2016-04-06
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Technical problem to be solved: Aiming at the deficiencies of the prior art, the present invention proposes a rear wheel active steering device, which solves the problem that the existing automobile rear wheel active steering device cannot provide a relatively large amount of power by only implementing a stepping motor to drive the lateral displacement of the steering rod. Technical Problems with Large Steering Torques

Method used

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  • A rear wheel active steering device and its control system
  • A rear wheel active steering device and its control system
  • A rear wheel active steering device and its control system

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] like figure 1 As shown, it is a rear wheel active steering device, including a linear stepper motor 10, a torque amplification device assembly 20, a rear wheel steering system assembly 30, a steering knuckle 40 and a rear wheel wheel system assembly 50;

[0030] The rear wheel wheel system assembly 50 includes a tire 53, a hub 52 and a hub motor 51, the hub motor 51 is installed at the center of the hub 52 for driving the wheels to rotate, and can be respectively located on the two rear wheels through active adjustment The rotating speeds of the two wheel hub motors 51 make the outer wheel speed higher than the inner wheel speed when turning. The steering knuckle 40 is set on the motor shaft of the wheel hub motor 51 through a key connection, and is one of the important parts when the automobile turns. The kingpin rotates to turn the car. It has high strength ...

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PUM

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Abstract

The invention discloses a rear-wheel active steering device and a control system thereof. The rear-wheel active steering device comprises a torque amplifying device assembly, a rear-wheel steering system assembly, a steering knuckle and a vehicle wheel system assembly; the steering knuckle is fixed on a motor shaft of a hub motor of the vehicle wheel system assembly; a steering pull rod of the rear-wheel steering system assembly and a steering arm of the steering knuckle are connected; a support at a lower end of the torque amplifying device assembly is connected with a steering transmission shaft of the rear-wheel steering system assembly. The rear-wheel active steering device is applied to an electric automobile which is independently driven by the wheel hub motor, the rear-wheel steering torque can be amplified through the torque amplifying device to enable the active device to be applicable to occasions difficult to steer, and meanwhile an electronic control unit enables rear-wheel steering to be achieved in an auxiliary mode by adjusting the differential of the rear-wheel wheel hub motor.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a rear wheel active steering device and a control system for the electric vehicle. Background technique [0002] With the sharp increase in the demand for petroleum resources in the automobile industry and the serious negative impact on the environment, the research on electric vehicles with the advantages of energy saving, environmental protection, and low noise has become the internal requirement and development trend of today's automobile industry. Among them, the hub motor independently drives the electric vehicle by integrating the motor and the hub, and the hub motor directly drives the wheel to rotate, eliminating the traditional transmission system, canceling the clutch, transmission and other components, improving the transmission efficiency and saving car space. Increased flexibility in vehicle design. [0003] At the same time, with the development of the economy and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D7/20B62D5/04
Inventor 殷国栋刘江华
Owner SOUTHEAST UNIV
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