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Compound steering-by-wire system driven by passenger car motor and steering control method

A technology of motor drive and steering system, applied in the direction of electric steering mechanism, mechanical steering gear, power steering mechanism, etc., which can solve the problems of lack of backup structure, affecting the safety and failure of wire control steering system

Pending Publication Date: 2019-11-12
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing steering-by-wire system lacks a backup structure, and cannot continue to complete the steering behavior when the electronic components of the system fail, and there is a risk of failure, which affects the safety of the entire steering-by-wire system

Method used

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  • Compound steering-by-wire system driven by passenger car motor and steering control method
  • Compound steering-by-wire system driven by passenger car motor and steering control method
  • Compound steering-by-wire system driven by passenger car motor and steering control method

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specific Embodiment approach

[0074] In order to clearly and completely describe the technical solution of the present invention and its specific working process, in conjunction with the accompanying drawings, the specific implementation of the present invention is as follows:

[0075] The invention provides a motor-driven compound steering-by-wire steering system for a passenger car, such as figure 1As shown, the composite steering-by-wire system is composed of a steering wheel unit I, an electronic control unit II and a steering execution unit III. Wherein, the road sense motor 29 in the steering wheel unit I is connected to the road sense motor deceleration mechanism C and then connected to the rotation shaft of the steering wheel 60, and the road sense simulation is realized through the road sense motor 29; the steering wheel unit I is connected to the steering execution unit III through the electromagnetic clutch 37 , to realize the transmission of torque; a torque angle sensor 31 is installed on the ...

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Abstract

The invention discloses a compound steering-by-wire system driven by a passenger car motor and a steering control method. In the system, a road sense motor is connected with a road sense motor deceleration mechanism and connected with a steering drive shaft provided with a torque angle sensor, a steering wheel is successively connected with the steering drive shaft, a torque rod, an upper transmission shaft and an electromagnetic clutch, in the steering executive motor deceleration mechanism, a first worm gear is installed on a steering gear shaft connected with a lower transmission shaft, andthe two ends of a first worm are both connected with a steering executive motor; and a steering pinion in a steering gear is coaxially and fixedly connected with the first worm gear, the two ends ofa rack are connected with steering wheels correspondingly, an ECU is connected with the torque angle sensor, the road sense motor, the electromagnetic clutch and the steering executive motor through signals. The method includes a conventional steering control method, a failure backup steering control method and a mechanical steering control method. According to the compound steering-by-wire systemdriven by the passenger car motor and the steering control method, in the case of the failure of electrical elements of the system, the steering action can be successfully completed, and the safety of the steering system is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of steering-by-wire for automobiles, and in particular relates to a motor-driven composite steering-by-wire system and a steering control method for passenger cars. Background technique [0002] Nowadays, control-by-wire technology is becoming more and more popular, and its application in the field of vehicle steering is becoming more and more extensive. The vehicle steering systems currently in use can be divided into two categories: [0003] 1. Power-by-wire steering system: There is a traditional mechanical connection between the steering wheel unit and the steering execution unit. When the driver steers the steering wheel, the control unit gives instructions to control the power-assisted motor to provide steering assistance to assist driving according to the signal of the sensor voltage and vehicle speed. It can be operated by the operator, and it can present different boosting effects according to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D3/12
CPCB62D5/043B62D5/046B62D3/12
Inventor 李静范天昕刘文吴桐孟令帅何闫
Owner JILIN UNIV
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