A Vehicle Stability Control Method Based on Tire Vertical Load Distribution

A technology of stability control and vertical load applied in the field of vehicle control

Inactive Publication Date: 2011-12-07
UNIV OF SHANGHAI FOR SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The present invention aims at improving the autonomous safety of vehicles, and proposes a vehicle stability control method based on tire vertical load distribution. According to the complex nonlinear relationship between vertical load and tire cornering force, the main Dynamically regulate ...

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  • A Vehicle Stability Control Method Based on Tire Vertical Load Distribution
  • A Vehicle Stability Control Method Based on Tire Vertical Load Distribution
  • A Vehicle Stability Control Method Based on Tire Vertical Load Distribution

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Embodiment Construction

[0021] The present invention adopts the magic tire model under the pure cornering condition, and the coupling relationship between the vertical load and the cornering force is as follows: figure 1 , the figure shows that as the vertical tire load increases, tires provide cornering force The slope gradually decreases. Using the vertical and lateral coupling mechanism of the tire, the vertical load distribution of the tire can be optimized through the active suspension control force, so the front and rear vertical load transfer will cause a cornering force difference between the front and rear tires, and then form a vehicle The yaw moment required for stable driving, such as figure 2 as shown, is the speed of the vehicle, is the side slip angle of the body center of mass, and are the longitudinal and lateral coordinate axes of the chassis coordinate system, respectively, is the center of mass of the vehicle, if the signs of the load increments of tires 1 and 4 are...

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Abstract

The invention relates to a vehicle stability control method based on tire vertical loading distribution, and the method comprises the following steps: calculating status information and ideal status information of a vehicle by a whole vehicle model and a whole vehicle reference model; and then comparing vehicle information; and regulating and controlling the vehicle loading distribution by virtueof a driving force of a driving hanging bracket according to a complex nonlinear relationship between a vertical load and a tire lateral deviation force, thereby controlling the lateral force nonlinear distribution of a tire, providing a compensated yawing moment to control the yawing motion of the vehicle, and finally achieving the purposes of restraining the side slipping of the vehicle and promoting the vehicle stability. The invention provides a new solution for controlling the stability of the vehicle.

Description

technical field [0001] The invention relates to a vehicle control technology, in particular to a vehicle stability control method based on tire vertical load distribution. Background technique [0002] Vehicle stability control has always been a hot topic in vehicle active safety research. Generally speaking, vehicle motion stability can be controlled through the active intervention of the braking system or steering system on vehicle yaw motion and roll motion to improve active safety. the goal of. [0003] Generally speaking, there are currently two types of vehicle stability control algorithms in the electronic control system of the automobile chassis. One is to control the yaw motion of the vehicle through the steering system to adjust the tire cornering force to control the vehicle's yaw motion to suppress tire sideslip and achieve the purpose of improving vehicle stability. Minimize the side slip angle of the center of mass and good transient response characteristics o...

Claims

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Application Information

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IPC IPC(8): B60W30/02B60W40/10
Inventor 孙涛徐桂红柴陵江
Owner UNIV OF SHANGHAI FOR SCI & TECH
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