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Multi-mode power-assisted steering system based on drive-by-wire steering and control method of system

A steering mode, power steering technology, applied in mechanical steering mechanism, electric steering mechanism, fluid steering mechanism, etc., can solve the problems of single driving experience, inability to realize steering system control, etc., to reduce driving fatigue, improve driving safety, The effect of reducing control costs

Pending Publication Date: 2019-05-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the steering system can only realize the steer-by-wire function, and the driving experience is single. When the steer-by-wire system has a mechanical failure, the steering system cannot be controlled.

Method used

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  • Multi-mode power-assisted steering system based on drive-by-wire steering and control method of system
  • Multi-mode power-assisted steering system based on drive-by-wire steering and control method of system

Examples

Experimental program
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Embodiment 1

[0044] Such as figure 1 As shown, the present invention discloses a multi-mode power steering system based on steer-by-wire, including a vehicle body, a steering mechanical module, an electro-hydraulic power assist module, an ECU control module 4, a rotary switch 25 and an on-board sensor.

[0045] Steering mechanical module includes steering wheel 1, steering column 2, road sensor motor 4, electromagnetic clutch A10, electromagnetic clutch B9, double planetary gear mechanism 11, worm gear mechanism 12, corner motor 13, wheels 14, steering tie rod 15, rack and pinion Mechanism 17; the steering wheel 1 is located inside the car body, one end of the steering column 2 is connected to the steering wheel 1, and the other end is connected to the electromagnetic clutch B9; the electromagnetic clutch B9 and the electromagnetic clutch A10 are both arranged on the steering column 2, and the electromagnetic clutch B9 is located between the steering wheel 1 and the Between the electromagn...

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PUM

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Abstract

The invention discloses a multi-mode power-assisted steering system based on drive-by-wire steering and a control method of the system. The system comprises a steering mechanical module, an electric hydraulic power-assisted module, an ECU control module, a rotary switch and a vehicle-mounted sensor, and has five working modes including a wire control mode, an electric hydraulic driving steering mode, an electro-hydraulic composite active steering mode, an electric hydraulic steering mode and a mechanical steering mode. The system can meet requirements of drivers for different driving experiences through switching of various modes, and when the wire control steering mode and other modes are faulty, the safety of the driver can be better guaranteed through mode switching.

Description

technical field [0001] The invention relates to a control-by-wire power steering system, in particular to a multi-mode power steering system based on a control-by-wire steering system and a control method thereof. Background technique [0002] Steering system is one of the key parts of the car. The driver controls the direction of movement of the car through the steering system. Therefore, the design of the steering system directly affects the safety of the car, the stability of the steering and the comfort of driving. The steer-by-wire system is a new generation of steering system. Because the mechanical connection between the steering wheel and the steering wheel is canceled, it is also called a flexible steering system. The power steering system by wire control completely gets rid of the various limitations of the traditional steering system. The driver's steering operation is only to input the steering wheel angle signal command to the vehicle. The actuator controls the...

Claims

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Application Information

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IPC IPC(8): B62D5/04B62D5/06B62D5/02B62D5/30
Inventor 崔滔文赵万忠王春燕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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