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Method and apparatus for determining the inclination of a moving vehicle with respect to the road

A technology of electromechanical system and inclination angle, which is applied to vehicle components, measuring inclination, headlights, etc., can solve the problem that slow-changing acceleration cannot be removed

Active Publication Date: 2016-02-03
MEMSIC SEMICON WUXI
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Problems solved by technology

Low-pass filtering removes most disturbing accelerations, but not slowly varying accelerations associated with changes in road inclination

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  • Method and apparatus for determining the inclination of a moving vehicle with respect to the road
  • Method and apparatus for determining the inclination of a moving vehicle with respect to the road
  • Method and apparatus for determining the inclination of a moving vehicle with respect to the road

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Embodiment Construction

[0019] US Provisional Patent Application 62 / 020,704 is hereby incorporated by reference in its entirety, as well as its disclosure.

[0020] The method and system of the present invention will be described below from the aspect of measuring the inclination angle of the suspension part of the vehicle relative to the road or the non-suspension part of the vehicle. The following description and examples are illustrations of embodiments of the invention and should not be considered as limiting the scope of the invention.

[0021] In the picture:

[0022]

[0023]

[0024]

[0025] θv is the inclination angle of the mounted portion of the vehicle with reference to the road and the non-mounted portion of the vehicle; that is, and angle between

[0026] θr = the angle of the road slope relative to the horizontal ground;

[0027] g = magnitude of acceleration due to gravity.

[0028] Figure 1A The relationship between the acceleration and deceleration vectors of the...

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Abstract

A method and system for determining the inclination of the suspended portion of a moving vehicle with respect to the road from a 2 axis or 3 axis accelerometer, inclinometer, or the like, for use in controlling a system or device that is dependent upon inclination. The method and system provide for the determination of the angle of inclination of the portion of the vehicle which is suspended with respect to the portion of the vehicle which is not suspended. The angle of inclination is derived from the dependence of acceleration along the axis normal to the vehicle (z axis) due to longitudinal (x axis) and / or latitudinal (y axis) accelerations of the vehicle.

Description

technical field [0001] The present invention relates generally to the art of controlling electromechanical systems of vehicles, and more particularly to methods and apparatus for controlling electromechanical systems based on the angle of inclination of the vehicle relative to a road. Background technique [0002] When the vehicle is stationary, by using a 2-axis or 3-axis accelerometer, it is possible to determine the vehicle's pitch and roll (θ T , ρ T ) to determine the direction of the gravity vector with respect to the axis by using trigonometric functions. For example, since θ T = arcsine (acceleration along the x-axis) and ρ T =arcsine (acceleration along the y-axis), so it can be set at the longitudinal and latitudinal axis θ with the vehicle T and ρ T A 2-axis accelerometer in a parallel plane provides acceleration data to calculate θ T and ρ T . For a 2-axis accelerometer placed in a plane perpendicular to the vehicle (the vehicle's x-axis is aligned with t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60Q1/115
CPCB60Q1/115B60Q2300/132G01C9/08B60Q1/0023B60W40/11
Inventor 詹姆斯·芬内利
Owner MEMSIC SEMICON WUXI
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