Hybrid type front wheel active steering system

An active steering and hybrid technology, applied in electric steering mechanism, power steering mechanism, automatic steering control components, etc., can solve problems affecting steering wheel torque and driver's sense of road, and achieve high reliability and broad market prospects Effect

Inactive Publication Date: 2017-01-25
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And when the AFS system is actively controlled, it will also affect the torque transmitted to the steering wheel, thereby affecting the driver's road feel

Method used

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  • Hybrid type front wheel active steering system
  • Hybrid type front wheel active steering system
  • Hybrid type front wheel active steering system

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0026] The present invention provides a hybrid front wheel active steering system, see attached figure 1 and 2 , including: input shaft 1, output shaft 2, double-row planetary gear, planet carrier 5, steering wheel 10, steering wheel angle sensor 11, road sense torque sensor 12, road sense motor 13, road sense feedback worm gear 7, steering actuator motor 15, Angle sensor 16, steering gear 14 and electronic control unit 9;

[0027] The double-row planetary gear consists of a coaxially fixed first planetary gear 3 and a second planetary gear 4;

[0028] The planet carrier 5 is a cylindrical shell, and its outer peripheral surface is processed with circumferential teeth;

[0029] The output shaft of the road sense motor 13 is fixed with a coaxial road sense feedback motor worm 8;

[0030] The output shaft of the steering execution motor 15 is fixed with ...

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Abstract

The invention discloses a hybrid type front wheel active steering system and belongs to the technical field of automobile steering. The hybrid type front wheel active steering system comprises an input shaft, an output shaft, double-row planetary gears, a planet carrier, a steering wheel, a road feeling motor, a road feeling feedback worm wheel, a steering execution motor, a steering gear and an electronic control unit, wherein the steering wheel is arranged at one end of the input shaft; the steering gear is arranged at one end of the output shaft; the double-row planetary gears are arranged in the planet carrier, a first planetary gear of the double-row planetary gears is meshed with a gear on the end part of the input shaft and a second planetary gear of the double-row planetary gears is meshed with a gear on the end part of the output shaft, so that the input shaft and the output shaft are coaxially connected; a circumferential gear on the planet carrier is meshed with a worm of the steering execution motor; the road feeling feedback worm wheel is fixed on the input shaft and is meshed with the worm of the steering execution motor; and the steering wheel and a turning wheel of the system have real-time controllable force transmission characteristic and angle transmission characteristic, and a mechanical steering state can be automatically recovered when the system is in failure.

Description

technical field [0001] The invention belongs to the technical field of automobile steering, and in particular relates to a hybrid front wheel active steering system. Background technique [0002] The handling performance of the steering system of a car is directly related to the active safety of the car and the driving experience of the driver. In conventional rack and pinion steering systems, the steering ratio from the steering wheel to the front wheels is fixed. Active Front Steering System (Active Front Steering System, AFS) can change the steering ratio according to the vehicle speed, and actively correct the front wheel steering angle when the driver over-manipulates and the vehicle is close to the unstable area, so as to keep the vehicle stable. [0003] The AFS system has designed a corner superposition mechanism, which is realized by double-input and single-output reducers (planetary gears, harmonic reducers, etc.). The front wheel active steering system (AFS) joi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/18B62D5/04B62D6/00B62D137/00
CPCB62D5/18B62D5/046B62D6/00B62D6/008
Inventor 杨林吴志成王渊哲韩振杨
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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