A method and system for predicting longitudinal vehicle speed under all operating conditions
A technology of longitudinal vehicle speed and prediction method, applied in prediction, measurement device, data processing application, etc., can solve problems such as poor adaptability to working conditions, and achieve the effect of solving poor adaptability to working conditions
Active Publication Date: 2020-12-08
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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[0007] The purpose of the present invention is to provide a method and system for predicting longitudinal vehicle speed under all working conditions, which can solve the problem of poor adaptability to working conditions existing in the prior art while accurately and real-time determining the longitudinal vehicle speed of the vehicle
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[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0054] The purpose of the present invention is to provide a method and system for predicting the longitudinal vehicle speed under all working conditions, which can solve the problem of poor adaptability to working conditions in the prior art while accurately determining the longitudinal vehicle speed of the vehicle in real time.
[0055] In order to make the above objects, features and advantages of the present invention more comprehensible, the present inventi...
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The invention relates to overall-condition longitudinal vehicle speed prediction method and system. The method comprises the following steps: acquiring vehicle information acquired by a signal acquisition module; generating a vehicle speed track of the vehicle according to the vehicle information; determining an error variance of the vehicle speed track and a longitudinal predicted vehicle speed of the vehicle according to the vehicle speed track; and determining the longitudinal vehicle speed of the vehicle under overall conditions according to the error variance of the vehicle speed track and the longitudinal predicted vehicle speed of the vehicle. According to the overall-condition longitudinal vehicle speed prediction method and system provided by the invention, the longitudinal vehicle speed of the vehicle can be accurately determined in real time; meanwhile, the problem of poor working condition adaptability in the prior art is solved.
Description
technical field [0001] The invention relates to the field of vehicle speed prediction, in particular to a method and system for longitudinal vehicle speed prediction under all working conditions. Background technique [0002] There are certain deficiencies in simply using wheel speed or acceleration information for vehicle speed estimation. Among them, the use of wheel speed information for vehicle speed estimation does not require integral calculations, which avoids the cumulative error caused by signal noise or zero point drift, but factors such as wheel speed sensor errors, wheel rolling radius changes, and wheel slip rates will have adverse effects on the accuracy of vehicle speed estimation. . The vehicle speed estimation method based on acceleration integration is very sensitive to the error and measurement noise of the inertial measurement unit (IMU), but the vehicle speed estimation method based on acceleration integration cannot accurately and real-time estimate th...
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IPC IPC(8): G06Q10/04G01D21/02B60W40/105
CPCB60W40/105G01D21/02G06Q10/04
Inventor 张雷王震坡丁晓林
Owner BEIJING INSTITUTE OF TECHNOLOGYGY