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Vehicle composite steering system and mode switching control method thereof

A steering system and steering control technology, applied in the direction of control devices, etc., can solve the problems of insufficient steering power and poor reliability, and achieve the effect of widening control, simple method, and improving yaw stability

Active Publication Date: 2020-12-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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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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  • Vehicle composite steering system and mode switching control method thereof
  • Vehicle composite steering system and mode switching control method thereof
  • Vehicle composite steering system and mode switching control method thereof

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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, road sensor motor 3, reduction mechanism 4, clutch 5, power assist 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 pin...

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Abstract

The invention discloses a vehicle composite steering system and a mode switching control method thereof, and the method comprises the steps: establishing a relation between an ideal yaw velocity and asteering wheel angle, and solving the ideal yaw velocity; establishing a composite steering system and a whole vehicle dynamic model; and designing a control method of the steering system in each steering mode according to the ideal yaw velocity, the composite steering system and the whole vehicle kinetic model. The advantages of a steer-by-wire system and a differential steering system are combined, the ideal yaw velocity is designed and tracked, and the yaw stability of the vehicle is improved.

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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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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