New energy automobile high-rotating-speed bearing kinetic parameter obtaining method

A dynamic parameter, new energy vehicle technology, applied in design optimization/simulation and other directions, can solve problems such as low empirical accuracy, high experimental cost, and no indication of whether the calculation results are consistent and accurate, so as to improve the solution efficiency and avoid slow convergence. , the effect of improving work efficiency

Active Publication Date: 2020-01-10
WUHAN UNIV OF TECH
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The literature "Quick Calculation Iterative Method for Quasi-static Model of Main Bearing of RV Reducer" takes the optimization result of static calculation as the initial value of quasi-static iteration, and proposes a combined iterative algorithm combining Newton-Raphson and Broyden methods, which still needs Selected based on experience or existing experimental data, the cost of the experiment is high, and the accuracy of experience is low
[0005] Chinese patent "A method for solving numerical values ​​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
  • New energy automobile high-rotating-speed bearing kinetic parameter obtaining method
  • New energy automobile high-rotating-speed bearing kinetic parameter obtaining method
  • New energy automobile high-rotating-speed bearing kinetic parameter obtaining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0031] Such as figure 1 As shown, in the new energy vehicle high-speed bearing dynamic parameter acquisition method of the present invention, for an angular contact ball bearing with a given working condition and basic structural parameters, according to figure 1 The number of iterative calculations of the process can be mainly divided into the following three steps:

[0032] Step 1: First use the method of theoretical mechanics to obtain the diameter and axial displacement δ of the inner ring of the bearing a and δ r , the outer ring of the bearing is fixed, and its load is F=[F a f r M],(F a is the axial load, F r is the radial load, M is the acting moment);

[0033] When the inner ring is only subjected to a...

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 new energy automobile high-rotating-speed bearing kinetic parameter obtaining method, comprising the following steps: S1, setting bearing parameters and bearing working conditions; S2, only considering the axial load of the bearing, and iteratively solving a contact angle convergence value through a load-contact angle change formula when only the axial force is applied;S3, simultaneously considering the radial load and the axial load; S4, solving to obtain a radial displacement delta r and an axial displacement delta a; S5, performing static analysis on the bearing,and establishing a bearing static balance equation; and S6, establishing a bearing quasi-static model by considering the centrifugal force of the bearing, the gyroscopic moment and the Hertz contact,and obtaining bearing dynamic parameters. According to the new energy automobile high-rotating-speed bearing kinetic parameter obtaining method, the dynamic parameters of the bearing can be rapidly obtained, and the working efficiency is greatly improved, and the new energy automobile high-rotating-speed bearing kinetic parameter obtaining method plays an important role in optimization design ofthe high-rotating-speed bearing and analysis design of dynamic characteristics of a high-speed rotor-bearing system.

Description

technical field [0001] The invention relates to the field of bearing dynamics, and more specifically, relates to a method for acquiring dynamic parameters of a high-speed bearing of a new energy vehicle. Background technique [0002] With the development of new energy vehicle technology, there is an urgent need to develop high-speed motor bearing analysis technology. This requires a method for accurately evaluating the initial value of the mechanical properties of high-speed bearings for new energy vehicles. [0003] At present, the bearing quasi-static analysis method proposed by Jones based on raceway control theory is widely used in the analysis of bearing mechanical properties. The initial value selected in this method has a great influence on the convergence effect of the model, and analysts need to have sufficient initial value setting experience. [0004] The literature "Quick Calculation Iterative Method for Quasi-static Model of Main Bearing of RV Reducer" takes t...

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): G06F30/20
CPCY02T90/00
Inventor 邓松谢聪华林钱东升韩星会
Owner WUHAN UNIV 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