A real-time measurement device for the deformation of the free end of the test piece in the ground resonance test

A technology of real-time measurement and test pieces, applied in the direction of mechanical solid deformation measurement, etc., to achieve the effect of ensuring reliability, low processing cost, and convenient and quick use

Active Publication Date: 2020-04-10
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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Problems solved by technology

[0003] The purpose of the present invention is to provide a real-time measurement device for the deformation of the free end of the test piece in the ground resonance test. With the deformation of the test piece, it can automatically adjust the measurement angle by relying on its own gravity effect to ensure the test accuracy, so as to solve or at least alleviate the problems in the background technology. at least one problem

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  • A real-time measurement device for the deformation of the free end of the test piece in the ground resonance test
  • A real-time measurement device for the deformation of the free end of the test piece in the ground resonance test
  • A real-time measurement device for the deformation of the free end of the test piece in the ground resonance test

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[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below ...

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Abstract

The invention provides a real-time measurement device of the deformation of a test piece free end of a ground resonance test, relating to the technical field of aircraft aeroelasticity. The device comprises a measurement base which is connected to the free end of a test piece and can rotate freely around an x-axis and a y-axis, and the degree of freedom of rotation around a z-axis is constrained. The device also comprises a measuring instrument which is installed on the measurement base, and a displacement ruler which is fixed arranged and is provided with displacement scales in z-axis and x-axis directions. The measuring instrument can be maintained at a horizontal state on the measurement base and indicate the displacement scales on the displacement ruler, and x, y and z are in a customized three-axis coordinate system. The device has the advantages that an angle of measurement can be adjusted automatically based on a self gravity effect with the deformation of the test piece, the test precision is ensured, the device is convenient and fast to use, the processing cost is low, the test efficiency can be greatly improved, and the reliability of a test result is effectively ensured.

Description

technical field [0001] The invention relates to the technical field of aircraft aeroelasticity, in particular to a real-time measurement device for free end deformation of a test piece in a ground resonance test. Background technique [0002] In the conventional ground resonance test, the measurement of the deformation of the free end of the test piece is often only realized by a tape measure or a straight rod, and the measurement error is relatively large; while the linear displacement sensor not only has more measuring equipment, but also has a large additional force, and With the increase of the deformation of the free end of the test piece, the verticality of the sensor cannot be guaranteed, and there are obvious disadvantages. Especially in the case of large deformation of the free end of the test piece, it is difficult to meet the design requirements. Therefore, it is necessary to design a set of real-time measurement device for the free end deformation of the test pi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B5/30
CPCG01B5/30
Inventor 胡志勇李巍杨佑绪孙晓红钱礼秦锦
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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