Comprehensive compensation strategy construction method for constant error of vehicle acceleration sensor

An acceleration sensor and comprehensive compensation technology, applied in the direction of instruments, special data processing applications, electrical digital data processing, etc., can solve problems such as error drift with time, achieve the effect of improving overall accuracy, increasing update speed, and high data update frequency

Active Publication Date: 2019-11-29
CHANGZHOU INST OF TECH
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the output signals of these commonly used sensors all contain unavoidable noise, and the output

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Comprehensive compensation strategy construction method for constant error of vehicle acceleration sensor
  • Comprehensive compensation strategy construction method for constant error of vehicle acceleration sensor
  • Comprehensive compensation strategy construction method for constant error of vehicle acceleration sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The specific solutions of the present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited thereto.

[0018] Such as figure 1 As shown, a comprehensive compensation strategy construction method for the constant value error of the vehicle acceleration sensor includes the following steps:

[0019] Step (1), observation of vehicle lateral velocity

[0020] The vehicle adopts the front-wheel drive mode, and it is stipulated that the center of mass of the vehicle is the origin of the body coordinate system, the positive direction of the x-axis is horizontally forward, the positive direction of the y-axis is horizontally leftward, and the positive direction of the z-axis is vertically upward, and all back Both the rotation angle and moment are positive in the counterclockwise direction in the horizontal plane.

[0021] First, determine the vehicle's dynamic equations for lat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a comprehensive compensation strategy construction method for a constant error of a vehicle acceleration sensor. The comprehensive compensation strategy construction method comprises the steps: firstly building a dynamic expression related to the lateral and yawing movement of a vehicle, and achieving the observation of the lateral speed of the vehicle; secondly, determining the state quantity and quantity measurement of an estimator according to the acceleration sensor error drift model and the transverse and longitudinal kinematics relationship of the vehicle, and estimating the constant error of the acceleration sensor by using a Kalman filter; and finally, compensating and updating the constant error of the acceleration sensor by correcting the tire positive pressure model and the tire cornering stiffness and feeding back the input information of the vehicle lateral velocity observer. The comprehensive compensation strategy construction method can realize estimation and iterative updating of the constant error of the vehicle acceleration sensor at a relatively high frequency, does not excessively lose the real-time performance while improving the overallprecision of vehicle motion state estimation, and has has the characteristics of simplicity and high efficiency.

Description

technical field [0001] The invention belongs to the field of error estimation and compensation of vehicle sensors, and in particular relates to a method for constructing a comprehensive compensation strategy for constant value errors of vehicle acceleration sensors, with the purpose of further improving the accuracy and real-time performance of vehicle driving state estimation. Background technique [0002] With the development of vehicle active safety technology, intelligent sensing theory has become one of its important research hotspots. For automobiles, the anti-lock braking system needs to judge the degree of wheel slippage based on the output of the wheel speed sensor, while the electronic stability control program determines the motion mode of the car based on the signal of the yaw rate sensor to achieve direct yaw moment control. However, the output signals of these commonly used sensors all contain unavoidable noise, and the output of some other sensors (such as veh...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F17/50
Inventor 陈建锋胡树林汤传业黄浩乾郭聪聪孙坚添曹杰孙晓东陈龙
Owner CHANGZHOU INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap