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Fault-tolerant steering-by-wire device and control method thereof

A technology of wire-controlled steering and control method, which is applied to automatic steering control components, steering control mounted on the vehicle, steering column and other directions, which can solve the problems of mechanical blocking of the motor rotor, reducing installation space, and electrical blocking. , to achieve the effect of realizing mechanical connection, reducing the layout space and occupying a small space

Active Publication Date: 2021-06-22
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, most of the structures proposed for mechanical protection use the clutch structure for electrical failure protection, but this structure only disconnects the connection of the transmission shaft, does not reduce the installation space, and may still cause the steering wheel to be damaged during the vehicle collision process. The impact on the driver; in addition, after the motor fails, the mechanical or electrical locking of the motor rotor may occur, and most structures have not dealt with it accordingly

Method used

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  • Fault-tolerant steering-by-wire device and control method thereof
  • Fault-tolerant steering-by-wire device and control method thereof
  • Fault-tolerant steering-by-wire device and control method thereof

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Embodiment Construction

[0033] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited thereto.

[0034] Such as figure 1 As shown, a steer-by-wire fault-tolerant device includes a signal acquisition unit, an electronic control unit and an actuator. The signal acquisition unit includes a first steering column tube angle sensor 4 and a second steering column tube angle sensor 9 for detecting the rotation angle of the steering wheel 1 and the second steering column tube 15 . The electronic control unit ECU13 is used to receive the rotation angle signal collected by the first steering column tube angle sensor 4, and control the steering of the steering motor 14. The steering motor 14 feeds back the motor current to the ECU13. The value is sent to the road sensor motor 12. The executive mechanism includes a coil spring 2, a first electromagnetic locker 3, a second ele...

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Abstract

The invention provides a steering-by-wire fault-tolerant device and its control method. The fault-tolerant device includes a signal acquisition unit, an electronic control unit and an actuator. The control unit and the electronic control unit control the locking and disconnection of the steering motor, road sense motor and electromagnetic lock according to the rotation angle signal, so as to realize the mechanical connection between normal steering and failure, and ensure that the vehicle does not lose its steering ability under any circumstances. The device of the invention has a compact structure and takes up little space. When the motor fails, it can be transformed into a motor power steering mode or a purely mechanical steering mode without affecting the steering system.

Description

technical field [0001] The invention belongs to the technical field of steering systems, and in particular relates to a steering-by-wire fault-tolerant device and a control method thereof. Background technique [0002] The car steering system is the key assembly that determines the active safety of the car. The traditional car steering system is a mechanical system. The steering movement of the car is realized by the driver manipulating the steering wheel and transmitting it to the steering wheel through the steering gear and a series of rods. . The steering-by-wire system cancels the mechanical connection between the steering wheel and the steering wheel, and the steering is completely realized by electric energy, which gets rid of various restrictions of the traditional steering system. Corner transfer characteristics, thereby improving the handling of the car, and improving the comfort of the ride. [0003] The working principle of the steer-by-wire system: use the sens...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D1/19B62D5/00B62D5/04B62D6/00B62D137/00
CPCB62D1/19B62D5/001B62D5/0421B62D5/0463B62D5/0487B62D6/008
Inventor 徐兴刘振宇王峰江昕炜解炬苏鹏威张健
Owner JIANGSU UNIV
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