US 5,742,918 A · Method and apparatus for dynamically compensating a lateral acceleration of a motor vehicle

Abstract

A system and a method for dynamically determining a lateral acceleration of a motor vehicle for input to a controller employed to control dynamics of the motor vehicle includes sensors for measuring predetermined vehicle operating state. The system also includes a device for predicting a value for the lateral acceleration, which can then be used to determine a correction factor for the measured lateral acceleration signal. This correction factor is proportional to the erroneous component of the lateral acceleration signal. Together, measured operating state and the correction signal are used to obtain a compensated operating state signal. This is particularly useful for reducing the errors attributable to sensor drift and DC offset in measured signals.

Claims10

Dependent claims

A system for dynamically determining a lateral acceleration of a motor vehicle for input to a controller employed to control dynamics of the motor vehicle, said system comprising:

yaw rate measuring means for producing a yaw rate signal corresponding to a yaw rate of said motor vehicle;
vehicle speed measuring means for producing a vehicle speed signal corresponding to a longitudinal velocity of said motor vehicle;
lateral acceleration measuring means comprising means for producing a first signal corresponding to a measured lateral acceleration of said motor vehicle;
lateral acceleration predictor means comprising means for producing a second signal using said yaw rate signal and said vehicle speed signal, said second signal thereby representing a predicted lateral acceleration of said motor vehicle;
correction means comprising means for producing a third signal representing an erroneous component of said first signal;
and
compensator means for removing said third signal from said first signal to obtain a fourth signal which accurately represents said lateral acceleration and providing said fourth signal to said controller.

4 more elements

A method for dynamically determining lateral acceleration of a motor vehicle for input to a controller employed to control dynamics of the motor vehicle, said system comprising the steps of:

measuring a yaw rate of the motor vehicle and producing a yaw rate signal;
measuring a vehicle longitudinal velocity and producing a vehicle speed signal;
measuring a measured lateral acceleration and producing a first signal corresponding thereto;
predicting a predicted lateral acceleration and producing a second signal corresponding thereto;
producing a third signal representing an erroneous component of said first signal;
and
dynamically compensating said first signal by subtracting said third signal therefrom, thereby producing a fourth signal which accurately represents said lateral acceleration for use by said controller.

4 more elements

Dependencies are inferred from the claim text.

Method and apparatus for dynamically compensating a lateral acceleration of a motor vehicle

Life of this patent

Method and apparatus for dynamically compensating a lateral acceleration of a motor vehicle

Life of this patent

Abstract

Claims10