Method for calculating transient and stable state response of elastic system under non-stable signal effects

A non-stationary signal and steady-state response technology, applied in the field of signal processing, can solve problems such as inability to distinguish between transient response and steady-state response, lack of practical significance, and difficulty in method implementation

Inactive Publication Date: 2015-08-26
FUJIAN UNIV OF TECH
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the numerical method can only calculate the overall response of the structure, the calculation result obtained is a complete solution, and the transient response and the steady-state response cannot be distinguished, so the calculation method of the transient

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
  • Method for calculating transient and stable state response of elastic system under non-stable signal effects
  • Method for calculating transient and stable state response of elastic system under non-stable signal effects
  • Method for calculating transient and stable state response of elastic system under non-stable signal effects

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] Such as figure 1 Shown, the present invention: a kind of calculation method of elastic system transient state and steady-state response under the action of non-stationary signal, comprises:

[0056] Step 10, decompose the non-stationary signal by wavelet packet of j layers to obtain 2 j wavelet packet components of different frequencies; the j value is determined by the calculation accuracy and the running speed of the computer;

[0057] Step 20, by linear amplitude modulation, fitting each of the wavelet packet components into simple harmonics, respectively, to obtain fitting simple harmonics corresponding to each of the wavelet packet components;

[0058] Step 30, deriving the analytical solution of the structural response of the elastic system under the action of each of the fitted simple harmonics;

[0059] Step 40, performing an inverse process of linear amplitude modulation on the structural response under the action of each of the fitted simple harmonics, and c...

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 provides a method for calculating transient and stable state response of an elastic system under non-stable signal effects. The method includes decomposing non-stable signal into j-layer wavelet packets to obtain 2j wavelet packet components of different frequencies, fitting the wavelet packet components into simple harmonic waves through linear amplitude modulation to obtain fitted simple harmonic waves corresponding to the wavelet packet components, deriving analytic solution of structural response of the elastic system under different fitted simple harmonic wave effect, carrying out a reverse process for linear amplitude modulation of the structural response under the fitted simple harmonic waves effects and calculating transient response and stable state response of the wavelet packet components, superposing the obtained transient response and stable state response of the wavelet packet components, and calculating transient and stable state response and complete response solution of the elastic system under non-stable signal effects. The method effectively calculates transient and stable state response and complete response solution of the elastic system under non-stable signal effects, and lays foundation for further researching transient response.

Description

technical field [0001] The invention relates to the field of signal processing, and more specifically relates to a calculation method for transient and steady-state responses of an elastic system under the action of non-stationary signals. Background technique [0002] In structural analysis, the structure with relatively concentrated mass is usually simplified to a single-degree-of-freedom system for analysis, while the structure with relatively dispersed mass is simplified to a multi-degree-of-freedom system for analysis. An elastic system is a system that deforms when a load is applied, and returns to its original shape when the load is removed. When a general structure is deformed by an external force and can be restored, it can be simplified as a single-degree-of-freedom elastic system or a multi-degree-of-freedom elastic system. [0003] The response of a structure to any signal can be divided into two parts: transient response and steady-state response. Traditional ...

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): G01V1/28G06F19/00
Inventor 吴琛周瑞忠项洪
Owner FUJIAN 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