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A vehicle compound steering system and its mode switching control method

A technology of steering system and control method, which is applied in the field of vehicle compound steering system and its mode switching control, can solve problems such as poor reliability and insufficient steering power, and achieve the effect of widening control, simple method and good control effect

Active Publication Date: 2021-09-17
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
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Problems solved by technology

[0003] Aiming at the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a vehicle compound steering system and its mode switching control method to solve the problems of insufficient steering power and poor reliability of the steering-by-wire system in the prior art

Method used

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  • A vehicle compound steering system and its mode switching control method
  • A vehicle compound steering system and its mode switching control method
  • A vehicle compound steering system and its mode switching control method

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Embodiment Construction

[0052] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

[0053] refer to figure 1 As shown, a vehicle compound steering system of the present invention includes: a steering-by-wire steering system and a differential steering system; wherein,

[0054] Steering by wire system includes: steering wheel 1, torque sensor 2, steering column machine 3, reduction mechanism 4, clutch 5, steering motor 6, steering control unit 7, vehicle speed sensor 8, yaw rate sensor 9 and rack and pinion steering gear 10 The steering wheel 1 is connected to one end of the steering column 3; the torque sensor 2 is installed on the steering column 3 for obtaining the torque when the driver turns the steering wheel; the steering motor 6 is installed on the On the rack and p...

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Abstract

The invention discloses a compound steering system of a vehicle and a mode switching control method thereof. The method includes: establishing the relationship between an ideal yaw angular velocity and a steering wheel angle, and solving the ideal yaw angular velocity; establishing a compound steering system and a vehicle dynamics model; The control method of the steering system in each steering mode is designed based on the swing angular velocity, the composite steering system and the vehicle dynamics model. The invention combines the advantages of the steer-by-wire system and the differential steering system, and improves the yaw stability of the vehicle by designing and tracking the ideal yaw angular velocity.

Description

technical field [0001] The invention belongs to the technical field of vehicle steering systems, and specifically refers to a vehicle compound steering system and a mode switching control method thereof. Background technique [0002] The automobile steering system is the key assembly that determines the active safety of the automobile. The traditional automobile steering system is a mechanical system. The steering movement of the automobile is realized by the driver manipulating the steering wheel and transmitting it to the steering wheels through the steering gear. The steering-by-wire steering system of automobiles 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. The angular transmission characteristics of the vehicle bring unlimited space to the design of the steering characteristics of the vehicle, whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/182B60W30/18B60W50/00
CPCB60W30/18145B60W30/182B60W50/00B60W2050/0037
Inventor 张寒赵万忠
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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