A method for lateral stability control of four-wheel drive vehicles based on time-varying speed

A technology of lateral stability and control method, which is applied in the direction of control devices, etc., and can solve problems such as vehicle slipping or tail flicking

Active Publication Date: 2021-03-09
GUANGDONG UNIV OF TECH
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Problems solved by technology

If the deflection angular velocity reaches a threshold value, it means that the car is more likely to encounter dangerous conditions such as skidding or tail flicking

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  • A method for lateral stability control of four-wheel drive vehicles based on time-varying speed
  • A method for lateral stability control of four-wheel drive vehicles based on time-varying speed
  • A method for lateral stability control of four-wheel drive vehicles based on time-varying speed

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Embodiment Construction

[0098] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all of them; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work all belong to the protection scope of the present invention.

[0099]This embodiment proposes a yaw moment control method based on time-varying speed. Considering that the speed of the vehicle is time-varying, the appropriate yaw moment to be provided is calculated through the designed controller, and the above two parameters are controlled at a suitable Then the calculated yaw moment is distributed to the four wheel...

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Abstract

The invention relates to the technical field of vehicle stability control, in particular to a method for controlling the lateral stability of a four-wheel drive vehicle based on time-varying speed, comprising the following steps: T1 collects the inherent parameters and real-time parameters of the vehicle; T2 uses the parameters of T1 to establish Automobile control model system; T3 considers the time-varying speed design LPV controller to T2 system; T4 is to the torque distribution of four-wheel drive automobile according to T3 result; The present invention considers that the automobile speed is time-varying, calculates the required by the designed controller Provide the appropriate yaw moment, control the above two parameters in a suitable range; then distribute the calculated yaw moment to the four wheels through the lower controller, improve the handling performance of the car, and improve the lateral stability of the car Performance, reduce the possibility of dangerous situations during the operation of the car, improve ride comfort, and have a strong creativity.

Description

technical field [0001] The invention relates to the technical field of vehicle stability control, in particular to a method for controlling the lateral stability of a four-wheel drive vehicle based on time-varying speed. Background technique [0002] Energy shortage and ecological deterioration are two major problems faced by human beings. As a limited natural resource on the earth, petroleum resources are gradually being exhausted. And the vehicle that adopts gasoline as fuel, its tail gas emission also is unavoidable problem. With the prosperity of people's lives, the number of traditional cars has increased rapidly, followed by a sharp increase in vehicle exhaust emissions, which has become one of the main causes of smog. Smog is a huge threat to people and the ecological environment. Therefore, developing new energy vehicles and reducing emissions has become a global trend. As a reliable, widely sourced and environmentally friendly energy source, electric energy will...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/02B60W50/00
CPCB60W30/02B60W50/00B60W2050/0019
Inventor 鲁仁全李鹏旭李攀硕李鸿一周琪
Owner GUANGDONG UNIV OF TECH
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