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Steering system fault-tolerant device and method, and vehicle

A steering system and steering column tube technology, applied in the field of steering system research, can solve the problems of loss of steering ability, the angle of steering wheel does not correspond to the angle of steering wheel, etc., and achieve the effect of ensuring steering ability, simple structure, and ensuring driving safety.

Active Publication Date: 2021-07-20
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the present invention, after the failure of the road sense motor or the steering motor, the mechanical steering is restored after the conversion of the two modes, so as to ensure the driver’s ability to control the steering of the vehicle in an emergency situation, and solve the problem that the angle of the steering wheel and the angle of the steering wheel do not match when the steering-by-wire system fails. Corresponding problems and the problem of losing steering ability after a failure

Method used

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  • Steering system fault-tolerant device and method, and vehicle
  • Steering system fault-tolerant device and method, and vehicle
  • Steering system fault-tolerant device and method, and vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] figure 1 Shown is an embodiment of a steering system fault-tolerant device, which includes an actuator, a detection mechanism and a control unit ECU10.

[0052] The actuator includes a first steering column tube 2, an electromagnetic locking component 4, a second steering column tube 6, a road sensor motor 9, a steering motor 12 and a steering gear; one end of the first steering column tube 2 is used for The steering wheel 1 is connected, and the other end is locked or separated from one end of the second steering column tube 6 through the electromagnetic locking part 4; the road induction motor 9 is connected with the first steering column tube 2 through the first reduction mechanism 3, and the steering The motor 12 is connected to the second steering column tube 6 through the second reduction mechanism 5, and the other end of the second steering column tube 6 is connected to the steering gear;

[0053] The detection mechanism is used to detect the steering wheel angl...

Embodiment 2

[0071] A vehicle, the steering system fault-tolerant device described in Embodiment 1, therefore has all the beneficial effects described in Embodiment 1, and will not be repeated here.

Embodiment 3

[0073] Such as Figure 4 As shown, a control method of a steering system fault-tolerant device according to Embodiment 1, comprising the following steps:

[0074] Data acquisition: the detection mechanism detects the steering wheel angle θ2' signal and the front wheel angle θ2 signal and transmits them to the control unit ECU10;

[0075] Mode selection and control: the control unit ECU10 judges whether to enter the angle alignment mode or the lock mode according to the fault signal and the difference between the steering wheel angle θ2′ and the front wheel angle θ2; and controls the road sense motor 9 and the steering motor 12 And the work of the electromagnetic locking part 4.

[0076] Preferably, the mode selection and control are specifically:

[0077] When the fault detection module of the control unit ECU10 detects a fault in the steer-by-wire system, and the fault is diagnosed as a fault in the road induction motor 9, it enters into the angle alignment mode and lock mo...

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Abstract

The invention provides a steering system fault-tolerant device and method and a vehicle, including an actuator, a detection mechanism and a control unit ECU; the actuator includes a first steering column tube, an electromagnetic locking component, a second steering column tube, a road sensor motor, a steering column Motor and steering gear; one end of the first steering column tube is used to connect with the steering wheel, and the other end is locked or separated from one end of the second steering column tube through an electromagnetic locking part; the road induction motor is connected to the first steering wheel through the first reduction mechanism The steering motor is connected to the second steering column tube through the second reduction mechanism, and the other end of the second steering column tube is connected to the steering gear; the detection mechanism is used to detect the steering wheel angle signal and the front wheel angle signal; the control unit ECU respectively Connect with detection mechanism, road sense motor, steering motor and electromagnetic locking parts. In the present invention, after the road sense motor or the steering motor fails, the mechanical steering is restored after switching between the two modes, so as to ensure the driver's ability to steer the vehicle in an emergency situation.

Description

technical field [0001] The invention belongs to the field of steering system research, and in particular relates to a steering system fault-tolerant device and method and a vehicle. Background technique [0002] Steering by wire cancels the mechanical connection between the steering wheel and the front steering wheel, which improves the driving characteristics, enhances the maneuverability, improves the driver's sense of the road, and enhances the comfort of the car. However, when the steering-by-wire system fails, it is easy to lose the steering ability, and the safety of the driver and passengers cannot be guaranteed. In the prior art, a clutch is provided to connect the first steering column to the second steering column to recover its mechanical steering function. In the prior art, a first position sensor is installed on the first rotating plate, and a second position sensor is installed on the second rotating plate to receive the signal of the relative rotation angle o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/04B62D15/02B62D5/02
Inventor 徐兴苏鹏威王峰解炬江浩斌
Owner JIANGSU UNIV
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