Timely four-wheel drive (4WD) electric wheel automobile adaptive steering system and control method thereof

A technology for electric wheel vehicles and steering systems, which is applied to automatic steering control components, electric steering mechanisms, non-deflectable wheel steering, etc. The coordination and unification of vehicle handling stability and other issues can achieve broad application prospects, improve handling stability and driving safety, and achieve the effect of perfect integration.

Active Publication Date: 2011-09-14
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, neither electric power steering nor active steering can make the car's steering portability, driver's road feel and car handling stability coordinated; in addition, both steering systems must increase power assist or displacement actuators, which will Complicate the system structure and increase the cost

Method used

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  • Timely four-wheel drive (4WD) electric wheel automobile adaptive steering system and control method thereof
  • Timely four-wheel drive (4WD) electric wheel automobile adaptive steering system and control method thereof
  • Timely four-wheel drive (4WD) electric wheel automobile adaptive steering system and control method thereof

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Embodiment Construction

[0019] The invention will be further described in detail below in conjunction with the drawings.

[0020] Such as figure 1 , figure 2 As shown, the adaptive steering system for a 4WD electric-wheeled vehicle in time is characterized by including a steering wheel 1, a main torque sensor 2, a steering servo motor 3, a planetary gear mechanism 4, a steering clutch 5, a rear steering first-stage pinion 6, a front Rack 7, electronic control unit ECU8, front wheel hub motor 9 1 , Rear wheel hub motor 9 2 , Front steering rocker arm 10, rear rack 22, rear torque sensor 23, main steering column 34, rear steering column 35, universal joint 24, planetary gear 25, sun gear 26, ring gear 27; main torque The sensor 2 is located under the steering wheel 1 and is connected to the steering wheel 1. The driving disc of the steering clutch 5 meshes with the rear steering pinion 6, and the steering servo motor 3 is connected to the driven disc of the steering clutch 5 through the planetary gear mec...

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Abstract

The invention relates to a timely four-wheel drive (4WD) electric wheel automobile adaptive steering system and a control method thereof, and belongs to a 4WD electric wheel automobile differential power-assisted steering system. A steering clutch and a steering servo motor are arranged between a main steering pipe column and a rear steering pipe column, and a planetary gear mechanism is arranged between the steering clutch and the steering servo motor, so that the timely 4WD electric wheel automobile adaptive steering system can realize adaptive selection of steering modes and a timely 4WD adaptive transmission-ratio-variable four-wheel differential power-assisted steering function on the basis of finishing the conventional electric wheel automobile differential power-assisted steering, and realizes transmission-ratio-variable control and active steering intervention.

Description

Technical field [0001] The invention relates to a timely 4WD (four-wheel drive: Four-Wheel Drive) electric wheel vehicle adaptive steering system and a control method thereof, and belongs to a 4WD electric wheel vehicle differential power steering system. Background technique [0002] The steer-by-wire system uses the controller to integrate the driver's angle input, vehicle status, and road conditions to determine a reasonable front wheel angle, and determine the output current of the displacement control motor, and finally drive the front wheel to rotate and complete the steering operation to achieve intelligent control of the steering system . The biggest difference between steer-by-wire and front-wheel active steering systems is that the mechanical connection between the steering wheel and the wheels is eliminated, and the limitations of the traditional steering system are completely freed. The torque transmission characteristics and angular displacement of the automotive ste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D11/04B62D6/00B62D101/00B62D119/00
Inventor 刘顺赵万忠孙培坤
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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