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Virtual test-based strain sensor optimized layout method

A strain sensor and arrangement method technology, applied in the field of dynamic tests, can solve the problems of cumbersome sensor optimization arrangement implementation process, etc., and achieve the effects of easy definition and description, simple optimization goals, and many considerations

Active Publication Date: 2017-11-07
BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC +1
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Problems solved by technology

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

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  • Virtual test-based strain sensor optimized layout method
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  • Virtual test-based strain sensor optimized layout method

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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 considered 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 accelerati...

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Abstract

The invention relates to the technical field of dynamic tests and provides a virtual test-based strain sensor optimized layout method. The method comprises steps that a Delta function is employed to represent the existence of a strain sensor; an applied impact load work point can move in random and a transient response analysis is conducted; sensor total minimization and impact response strain total 2-norm maximization are designated to be an optimization target; and a genetic optimization algorithm is applied and a strain sensor optimal layout scheme can be achieved. The beneficial effects are that the Delta function is used for representing the existence of the strain sensor, which is practical; based on the genetic algorithm, the impact load work point can move in random between skin nodes, so the strain sensor optimized layout result has universality; the optimization target is simple and easy to define and describe; and at least one half of sensors can be saved compared with traditional sensor layout numbers.

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 identification parameters; in addition, from the economic point of view, the number of sensors should be used as little as possible. Therefore, determining the optimal arrangement of sensors has important practical va...

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Application Information

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Patent Type & Authority Applications(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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