Dynamic measurement system and method of infinitesimal displacement caused by laser impulse coupling

A micro-displacement, dynamic measurement technology, applied in the field of electromagnetic detection, can solve the problems of complicated analysis and processing, high cost, low repeatability, etc.

Active Publication Date: 2015-12-09
NANJING UNIV OF SCI & TECH
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Problems solved by technology

However, using this method to obtain the dynamic motion process of the target requires a high-speed camera with a high frame rate, which is expensive and has poor detection effect on small displacements.
The second is to use optical methods such as interference method and optical lever method. Although these methods have fast response to small displacement measurement and high precision, the analysis and processing in the later stage are complicated, the repeatability of the experiment is low, and the optical path is complex and huge.

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  • Dynamic measurement system and method of infinitesimal displacement caused by laser impulse coupling
  • Dynamic measurement system and method of infinitesimal displacement caused by laser impulse coupling
  • Dynamic measurement system and method of infinitesimal displacement caused by laser impulse coupling

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Embodiment Construction

[0035] It is easy to understand that, according to the technical solution of the present invention, without changing the essence of the present invention, those skilled in the art can imagine various implementations of the dynamic measurement system and method for small displacement caused by laser impulse coupling in the present invention . Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the entirety of the present invention or as a limitation or limitation on the technical solution of the present invention.

[0036] to combine figure 1 , the present invention realizes the dynamic measurement of the micron-scale micro-displacement caused by laser impulse coupling, which is completed in a displacement detection system based on the Hall effect. The displacement dynamic measurement system is mainly composed of two parts, including the compound pendulum de...

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Abstract

The invention brings forward a dynamic measurement system and method of infinitesimal displacement caused by laser impulse coupling. The method comprises: according to a Hall electromagnetic effect principle, a linear hall sensor as a signal detector is used for measuring micron-grade infinitesimal displacement during the laser impulse coupling process based on combination with compound pendulum; the infinitesimal displacement of the compound pendulum is converted into an electric signal by the linear hall sensor and the signal is shown by an oscilloscope; data obtained by the oscilloscope are analyzed to obtain target material displacement caused by the laser impulse coupling as well as cycle information and then obtain information containing a target material speed and acceleration distribution and the like, thereby obtaining impulse coupling information of the target material. According to the invention, extraction of infinitesimal displacement, speed, and acceleration information of solid target material due to the impulse coupling can be realized. The method is simple and effective; the measurement system is compact and simple; and adaptability is high.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic detection, and in particular relates to a dynamic measurement system and method for micron-scale micro-displacement caused by impulse coupling during the interaction between laser and target material. Background technique [0002] Compared with traditional chemical fuel propulsion and electric propulsion, laser propulsion technology has attracted wide attention from experts and scholars from various countries due to its characteristics of large specific impulse, low cost, high reliability, low pollution, easy control and broad application prospects. It is expected to be used in the removal of debris and other space junk, aircraft orbit change and attitude adjustment, micro-satellite low-earth orbit launch, deep space exploration flight, etc. Impulse coupling, as the essence of laser propulsion, represents the coupling transmission of force during the interaction between laser and matter. I...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/02
Inventor 韩冰朱华中陆健李泽文
Owner NANJING UNIV OF SCI & TECH
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