Roll stability indicator for vehicle rollover control

A stability and vehicle technology, applied in vehicle suspension/shock-absorbing mechanism testing, suspension, etc., can solve problems such as inability to reflect inclination energy

Inactive Publication Date: 2007-08-29
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although roll rate and roll angle are the two most important parameters for detecting vehicle rollover motion, they do not reflect the total vehicle tilting energy that ultimately determines the vehicle's tendency to roll over

Method used

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  • Roll stability indicator for vehicle rollover control
  • Roll stability indicator for vehicle rollover control
  • Roll stability indicator for vehicle rollover control

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Embodiment Construction

[0009] The following discussion of embodiments of the invention, directed to a process for determining the likelihood of a vehicle rolling over by determining vehicle roll energy and roll energy rate, is illustrative only and is not intended to be critical to the invention or its application or use. Limit.

[0010] As described below, the present invention includes a system and method for determining the likelihood of a wheel leaving the ground (tilting) or a vehicle rolling over by determining a roll stability index to give roll energy, where as roll angle and side The roll stability index is determined as a function of the roll rate. Vehicle rollover involves a complex interplay of forces acting on the vehicle that are affected by vehicle handling and road surface conditions. The vehicle roll motion is mainly caused by inertial forces and, in the case of high sideslip angles, by the wheel platform overturning moment.

[0011] Figure 1 is a vehicle 10 at O 1 A schematic di...

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Abstract

A system and method for providing a vehicle roll stability indicator that estimates the propensity for vehicle rollover. The system determines vehicle kinematics from vehicle sensors, such as roll rate, yaw rate, lateral acceleration, vehicle speed, etc. From these kinematic values, the system estimates a roll angle of the vehicle and a bank angle of the vehicle. From the estimated bank angle, the system provides a corrected roll angle. From the corrected roll angle, the system determines a roll energy of the vehicle and a roll energy rate of the vehicle. From the roll energy and the roll energy rate, the system calculates a roll stability indicator that defines the potential that the vehicle will tip-up or roll over. From the roll stability indicator, vehicle stability control systems can take suitable action.

Description

technical field [0001] The present invention relates generally to a system and method for providing a vehicle roll stability indicator indicative of the potential for a vehicle to roll, and more particularly to a system and method for providing a vehicle roll stability indicator A method wherein determining the roll stability index includes calculating a vehicle roll energy and a roll energy rate, wherein the index is indicative of a potential for vehicle roll. Background technique [0002] It is known in the art to prevent vehicle rollover by providing vehicle rollover control using differential braking control, rear wheel steering control, front wheel steering control or any combination thereof. The vehicle roll prevention system can receive vehicle dynamic information through various sensors (such as yaw rate sensors, lateral acceleration sensors, and roll rate sensors), so as to determine appropriate control actions to take to prevent vehicle rollover. A balance is typi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/04B60W40/10
CPCB60W40/114B60W2720/18B60G2800/9124B60W40/112B60W30/04B60W40/11
Inventor N·K·莫什楚克S·-K·陈C·-F·陈
Owner GM GLOBAL TECH OPERATIONS LLC
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