Progressive health monitoring method for cable system in cable structure based on angle monitoring

A technology of health monitoring and angle monitoring, applied in the testing of machine/structural components, measuring devices, instruments, etc., can solve the problems of unfavorable identification of damaged cables, the influence of health conditions, and the influence of the health conditions of other cables.
CN101476990BInactive Publication Date: 2011-05-04华新建工集团有限公司 +1
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
华新建工集团有限公司
Publication Date
2011-05-04
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to an incremental health monitoring method in a cable system of a cable structure based on angular coordinate monitoring, which takes that linear relation between current value vectors of values to be monitored and initial value vectors of the values to be monitored, and the linear relation between unit damage value change arrays of the values to be monitored and current nominal damage vectors are similar into consideration on the premise of taking angular coordinates as values to be monitored, in particular when damaged cables are more or damage extent is larger, the linear relation characteristic is more obvious. In order to overcome the defect, the invention provides a method for using the linear relations to perform piecewise approximation on nonlinear relations based on the angular coordinate monitoring, divides a large interval into a plurality of continuous small intervals; in the small intervals, the linear relations are accurate enough and proper algorithms such as multiobjective optimization algorithm are utilized to calculate noninferior solutions of current cable damage vectors, and then positions of the damaged cables and the damage extent of thecables are determined accurately.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] Based on the monitoring of angular coordinates, the present invention discloses a progressive health for identifying damaged cables in cable systems (referring to all load-bearing cables) of cable structures (especially large cable structures, such as large cable-stayed bridges, suspension bridges) A monitoring method belongs to the field of engineering structure health monitoring. Background technique

[0002] The cable system is usually a key component of the cable structure, and its failure often leads to the failure of the entire structure. Based on structural health monitoring technology to identify cable systems (especially large cable structures, such as large cable-stayed bridges, suspension bridges) in the cable system The damaged cable is a method with great potential. At present, the structural health monitoring technology mainly monitors the cable force, and identifies the damaged cable and its damage degree according to the change of the ...

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