Structural deformation sensor layout optimization fitting method

Abstract

The invention discloses a structural deformation sensor layout optimization fitting method. The method comprises the following steps of firstly, generating a gradient map related to the deformation size and the position information from a structural deformation cloud picture; secondly, carrying out structural deformation sensor extraction on the gradient map, and for extracted points, carrying out fitting estimation on deformation values of the points by utilizing a spatial interpolation method; then, repeatedly deleting one measuring point from the actual measuring point set, estimating a deformation estimation value of the deleted point by using the remaining measuring point set, and evaluating the precision of the deformation estimation value; and finally, reducing the arrangement number of the structural deformation sensors for the observation points of which the estimated values meet the precision requirement, and keeping the arrangement of the observation points of the structural deformation sensors when the estimated values do not meet the precision requirement. According to the method, the arrangement number of the deformation sensors can be effectively reduced, the arrangement positions of the deformation sensors are optimized, and the system structure deformation quantity can be comprehensively and accurately monitored.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to a method for optimizing and fitting the layout of a spacecraft structure deformation sensor. Background technique [0002] With the rapid development of the national economy and the needs of national defense construction, the complexity, integration and intelligence of satellites and other spacecraft products continue to increase, and higher requirements are placed on the reliability of spacecraft products, resulting in The physical quantities required to be monitored in the predictive and health management system (PHM) are gradually increasing, and the difficulty of monitoring is also increasing. In addition, there is an urgent need for technologies such as real-time monitoring of structural deformation, fault location, and layout optimization of structural deformation sensors. [0003] Theoretically speaking, the more the number of structural deformation sensors, the more de...

AI Technical Summary

Problems solved by technology

[0004] At present, the layout optimization methods of structural deformation sensors are basically based on the effective independence method and the dynamic characteristic analysis method of the modal vector kinetic energy. The response point cannot accurately reflect the modal vector of the structure, which will lead to the inability to accurately reflect the deformation of the product after layout optimization

Images