Method for determing normal acceleration, longitudinal angular acceleration and lateral angular acceleration of body, especially motor vehicle

A technology of vertical acceleration and acceleration, applied in the direction of measurement of acceleration, multi-dimensional acceleration measurement, speed/acceleration/shock measurement, etc., can solve the problems of intensive and complex addition cost

Active Publication Date: 2011-09-28
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Active damping systems have the disadvantage compared to passive damping systems that they are significantly more complex and cost-intensive

Method used

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  • Method for determing normal acceleration, longitudinal angular acceleration and lateral angular acceleration of body, especially motor vehicle
  • Method for determing normal acceleration, longitudinal angular acceleration and lateral angular acceleration of body, especially motor vehicle
  • Method for determing normal acceleration, longitudinal angular acceleration and lateral angular acceleration of body, especially motor vehicle

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0131] figure 1 A motor vehicle 1 is shown schematically. Motor vehicle 1 comprises a wheel suspension system 3 and four wheels 2 . The wheel 2 is connected to the wheel suspension system 3 by means for securing the wheel 4 . The wheel suspension system 3 comprises four spring elements 5 and four shock absorbers 6 which implement the suspension of the wheel. A spring element 5 and a shock absorber 6 are arranged in each case in the region of each wheel 2 .

[0132] The motor vehicle 1 also comprises four height sensors 7 arranged in the area of ​​each wheel 2 and four speed sensors 15 each arranged in the area of ​​each wheel 2 . Furthermore, the motor vehicle 1 or the wheel suspension system 3 comprises a device for determining the lateral acceleration 8 and a motion determination unit 9 . The longitudinal acceleration is determined by time-domain differentiation of the longitudinal velocity at the center of gravity of the vehicle. The motion determination unit 9 may be...

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PUM

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Abstract

The invention discloses a method for determing a normal acceleration (az), a longitudinal angular acceleration (ax) and a lateral angular acceleration (ay) of a body, especially a motor vehicle. The body comprises a longitudinal rotation axis (x), a lateral rotation axis (y), at least three spring elements (5), at least three shock absorbers (6) and at least three height sensors (7) with each height sensor (7) being disposed in the area of corresponding sensor (6). The method is characterized in that the damping force (FDi) of the shock absorbers (6), the spring force (FSi) of the spring elements (5), the gravity center of the body, the mass of the body (mB), the moment of inertia of the body (Jxx, Jyy), the positions of the shock absorbers with respect to the body (sv, sh, Iv, Ih), the average height (hx) of the longitudinal rotation axis and the average height (hy) of the lateral rotation axis are determined; The normal acceleration (az), the longitudinal angular acceleration (ax) and the lateral angular acceleration (ay) are determined by means of the mass of the body (mB), the moment of inertia of the body (Jxx, Jyy), the positions of the shock absorbers with respect to the body (sv, sh, Iv, Ih), the average height (hx) of the longitudinal rotation axis and the average height (hy) of the lateral rotation axis, the damping force (FDi) of the shock absorbers (6), and the spring force (FSi) of the spring elements (5).

Description

technical field [0001] The invention relates to a method of determining the vertical, longitudinal and lateral angular accelerations of a body. The body may in particular be a motor vehicle. The invention also relates to a wheel suspension system and a motor vehicle. Background technique [0002] In order to reduce the propensity of technical equipment to fail, it is desirable to be able to implement technical functions with as few parts as possible. For example, a motor vehicle, and particularly a suspension system of a motor vehicle, typically includes a plurality of sensors. Among the plurality of sensors there are sensors for measuring the vertical acceleration of the motor vehicle, sensors for determining the horizontal acceleration of the motor vehicle and distance sensors. Generally, four sensors measuring the distance of the body relative to chassis components attached to the wheels, three accelerometers determining the vertical acceleration of the motor vehicle a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W40/10B60G17/04G01P15/00G01C19/16G01P15/18
CPCB60G2400/252B60G2400/0532B60G17/06B60G2400/102G01P15/18B60G17/01908B60G2400/0531B60G17/02
Inventor Y·博伊姆兴M·西曼M·苏尔曼M·舒摩尔U·霍夫曼R·诺顿
Owner FORD GLOBAL TECH LLC
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