Model parameter distinguishing method

An identification method and model parameter technology, applied in the intersection of information science and civil engineering, can solve problems such as unfavorable and effective analysis of seismic response and seismic performance of structures, unfavorable accurate representation of mathematical models of civil structures, and weak generality of parameter identification methods.

Active Publication Date: 2017-06-30
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY +1
View PDF6 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the Bouc-Wen model has complex mathematical relationship expressions and parameters with unclear physical meanings. Because it is difficult to identify them efficiently and accurately, it is not conducive to the accurate expression of the mathematical model of civil structures, and is not conducive to the effective analysis of the seismic response of structures. and seis...

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
  • Model parameter distinguishing method
  • Model parameter distinguishing method
  • Model parameter distinguishing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0150] The present invention performs parameter identification for the restoring force-deformation Bouc-Wen model, and selects 25456 groups of test measurement data to simulate and calculate the method of the present invention. In this test, the time step is 0.1s, and the data format is shown in Table 1.

[0151] Table 1 Experiment 1 measurement data

[0152] serial number t(s) u(mm) F(kN) serial number t(s) u(mm) F(kN) 1 0 0 0 12226 1222.5 -11.19 442.15 2 0.1 2.5 247.2 12227 1222.6 -11.09 444.23 3 0.2 2.5 248.66 12228 1222.7 -10.96 446.3 4 0.3 2.44 249.03 12229 1222.8 -10.8 453.14 5 0.4 2.41 249.15 12230 1222.9 -10.64 460.83 6 0.5 2.5 249.76 12231 1223 -10.47 462.54 7 0.6 2.49 250.86 … … … … 8 0.7 2.47 252.69 25452 2545.1 3.08 -344.49 … … … … 25453 2545.2 3.11 -347.3 12223 1222.2 -11.55 431.78 25454 2545.3 3.1 -352.31 12224 1222.3 -11.37 4...

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 model parameter distinguishing method. The method comprises the steps that an intermediate variable and parameters to be distinguished in the change process of a study object are selected as system state variables, and the relevant parameters are initialized; a system state change model and a resilience measuring model are set up; a system state predicated value of the next time point is calculated according to the state change model and the original values of all the system state variables; the resilience measured and predicted value and system resilience measured and predicted value of each sigma point are calculated; unscented Kalman filter gain is calculated; a system state optimizing estimated value is calculated; the state change model is updated. A Bouc-Wen model is pulled away from a specific civil structure model, data is adopted as drive to solve the accurate distinguishing problem of the model parameters, universality is achieved, the method can be expanded and applied to the distinguishing problem meeting or approximately meeting Bouc-Wen models among various kinds of relevant variables.

Description

technical field [0001] The invention relates to the cross technical field of information science and civil engineering, in particular to a model parameter identification method. Background technique [0002] Since earthquakes pose a serious threat to human life and property safety, more and more attention has been paid to the seismic performance of civil structures. Structural hybrid test is an effective test technique to evaluate the seismic performance of large complex civil structures. The test combines physical loading test and numerical simulation technology, and the accuracy of the structural mathematical model on which the numerical simulation depends directly affects the test results. At the same time, an important function of the structural mathematical model is to reflect the hysteretic nonlinear restoring force existing in a large number of civil structures. [0003] The restoring force-deformation Bouc-Wen model relates the structural restoring force and deforma...

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
CPCG06F30/20G06F2119/06
Inventor 苏婷立白玉廷唐贞云金学波孔建磊
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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