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A Strain Sensor Optimal Arrangement Method Based on Virtual Test

A technology of strain sensor and virtual test, which is applied in the field of dynamic test, can solve the problems such as the cumbersome implementation process of sensor optimization layout, and achieve the effects of easy definition and description, simple optimization goal, and many considerations

Active Publication Date: 2019-03-29
BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The implementation process of general-purpose sensor optimization layout is cumbersome (a large number of matrix calculations), and most of the factors related to modal vibration are considered

Method used

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  • A Strain Sensor Optimal Arrangement Method Based on Virtual Test
  • A Strain Sensor Optimal Arrangement Method Based on Virtual Test
  • A Strain Sensor Optimal Arrangement Method Based on Virtual Test

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Embodiment Construction

[0039] Specific embodiments of the present invention will be described in detail below in conjunction with specific drawings. It should be noted that the technical features or combinations of technical features described in the following embodiments should not be regarded as isolated, and they can be combined with each other to achieve better technical effects. In the drawings of the following embodiments, the same reference numerals appearing in each drawing represent the same features or components, which can be applied in different embodiments.

[0040] The embodiment of the present invention proposes a method for optimizing the arrangement of strain sensors based on a virtual test, using the Delta function to represent the presence or absence of strain sensors, the point of action of the applied impact load moves randomly, and the transient response analysis is performed to minimize the total number of sensors and the impact response The strain (strain energy and accelerat...

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Abstract

The present invention relates to the technical field of dynamic tests, and provides a method for optimizing the layout of strain sensors for virtual tests, including the steps of using a Delta function to represent the presence or absence of strain sensors; the point of action of the applied impact load moves randomly, and the method of performing transient response analysis Steps; and taking the minimization of the total number of sensors and the maximization of the strain sum 2-norm of the impact response as optimization goals, using a genetic optimization algorithm to obtain a better arrangement of the strain sensors. The beneficial effects of the present invention are: the Delta function is used to represent the presence or absence of the strain sensor, and the method is practical; based on the genetic algorithm, the impact load action point can be randomly moved among the skin nodes, so that the optimal arrangement result of the strain sensor is universal ; The optimization target is simple, easy to define and describe; compared with the traditional sensor arrangement, the number of sensors can be saved by at least half.

Description

technical field [0001] The invention relates to the technical field of dynamic tests, in particular to a method for optimizing the arrangement of strain sensors based on virtual tests. Background technique [0002] In the vibration shock experiment, the position of the sensor test point must be determined first, and the number of test points arranged in the experiment is far less than the number of degrees of freedom of the structure. Optimal acquisition, obtaining as much information as possible about structural characteristics and structural responses, is one of the key technologies for the effective implementation of the optimal arrangement of sensors for complex engineering structure tests. [0003] Improper placement of sensors will affect the accuracy of the identification parameters; in addition, from an economical point of view, sensors should be used as little as possible. Therefore, determining the optimal arrangement of sensors has important practical value. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06Q10/04G01M7/08
CPCG06Q10/043G01M7/08G06F30/23G06F2111/06G06F2113/28B64F5/60B64C3/00G01M7/00
Inventor 邱菊胡震东谢汶轩扈静泽汲生成李明
Owner BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC
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