Whole vehicle mass and road gradient estimation method

A road gradient and vehicle quality technology, applied in the direction of control devices, etc., can solve the problems of high working conditions, inapplicability, and difficulty in setting the vehicle quality and gradient interval.

Inactive Publication Date: 2021-03-02
DONGFENG COMML VEHICLE CO LTD
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a method for estimating the vehicle mass and road slope to solve the problem of constructing the vehicle mass and road slope matrix in advance in the related art, which is difficult to set for heavy vehicles with large tonnage o

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
  • Whole vehicle mass and road gradient estimation method
  • Whole vehicle mass and road gradient estimation method
  • Whole vehicle mass and road gradient estimation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

[0029] The embodiment of the present invention provides a method for estimating the vehicle mass and road slope, which can solve the problem of constructing the vehicle mass and road slope matrix in advance in the related art, which is difficult for heavy vehicles with large tonnage or mountain roads with large slope fluctuations. Setting an ...

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 relates to a whole vehicle mass and road gradient estimation method which comprises the following steps: when the vehicle speed is smaller than a preset vehicle speed, adopting a presetproportion vehicle full-load value as a vehicle mass estimation value, and calculating the road gradient according to a vehicle longitudinal acceleration sensor measurement value and a vehicle acceleration calculation value; when the vehicle speed is larger than or equal to the preset vehicle speed, adopting the vehicle speed, the vehicle mass and deformation of road gradient as state variables, and the vehicle speed and the longitudinal acceleration as observed variables, establishing an extended Kalman state transition and observation equation, and estimating the vehicle mass and the road gradient according to an extended Kalman filtering formula. According to the whole vehicle mass and road gradient estimation method, when the vehicle mass and the road gradient are estimated, the gradient interval does not need to be set, the requirement for the working condition is low, and the method is suitable for heavy vehicles and various working conditions.

Description

technical field [0001] The invention relates to the field of vehicle control, in particular to a method for estimating vehicle mass and road gradient. Background technique [0002] At present, vehicle mass and road gradient are important parameters in the vehicle dynamics model. Accurate estimation of mass and gradient can effectively improve vehicle dynamics and economy. [0003] In the related art, a method for estimating the vehicle mass is to first construct a matrix composed of vehicle mass and road slope, and then calculate multiple theoretical values ​​of vehicle longitudinal acceleration according to the vehicle dynamics model, vehicle mass, and road slope matrix, and finally The measured acceleration value is compared with the calculated value, and the estimated value of the vehicle mass and road slope is determined according to the comparison results. However, this estimation method needs to construct the vehicle mass and road slope matrix in advance. For larger m...

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): B60W40/13B60W40/076B60W50/00
CPCB60W40/076B60W40/13B60W50/00B60W2050/0052B60W2520/10B60W2520/105
Inventor 冯永杰张彦康王华武万四禧鲁新月徐世杰
Owner DONGFENG COMML VEHICLE CO LTD
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