A torsion balance two-degree-of-freedom force-measuring balance and its calibration and force-measuring methods

A force-measuring balance and degree-of-freedom technology, which is used in measurement devices, fluid dynamics tests, aerodynamic tests, etc. The effect of maintaining constant temperature and humidity and solving interference

Active Publication Date: 2020-10-16
LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the measurement accuracy of existing mechanical and strain balances cannot fully meet the requirements of high-precision force measurement

Method used

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  • A torsion balance two-degree-of-freedom force-measuring balance and its calibration and force-measuring methods
  • A torsion balance two-degree-of-freedom force-measuring balance and its calibration and force-measuring methods

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Embodiment Construction

[0050]In order to make the purpose and technical solutions of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0051] The present invention decomposes the vector force on the test model, uses the principle of torsion balance to transform the force component applied on the test model into tiny torsional deformation on the two degrees of freedom, and uses the optical lever amplification method to convert the deformation into Electrical signal, and finally by measuring the ...

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Abstract

The invention relates to a torsion balance type two-degree-of-freedom force-measuring balance and a calibration and force-measuring method thereof, and belongs to the field of experiment and testing.The force-measuring balance comprises a balance platform frame mechanism, an optical measuring mechanism and a calibration mechanism; the balance platform frame mechanism is used for decomposing the vector force applied to an experiment model into horizontal and vertical direction components, and torsional deformation is generated in the horizontal and vertical directions; the optical measuring mechanism is used for measuring the torsional deformation of the horizontal and vertical directions of the balance platform frame mechanism; and the calibration mechanism is used for calibrating the measurement process of the optical measuring mechanism. The balance platform frame mechanism realizes the measurement of the stressing component of the experiment model in the two directions, a permanentmagnet array and a linear array are used by the balance to form electromagnetic calibration devices on two force-measuring degrees of freedom correspondingly, and on-line real-time calibration of theforce-measuring process can be realized.

Description

technical field [0001] The invention relates to a force-measuring balance and its calibration and force-measuring method, belonging to the technical field of vehicle force-measuring tests. Background technique [0002] Wind tunnel or water tunnel model tests can provide key test parameters and design basis for the development of new aircraft, automobiles, high-speed rail, ships, etc.; especially for the study of complex flow problems, the test measurement of model aerodynamic force and underwater resistance is a computer Simulation cannot be replaced, and it is an important tool to determine the success or failure of related research. [0003] At present, mechanical balances and strain balances are often used in wind tunnel or water tunnel tests to carry out force testing. Traditional mechanical balances are bulky, susceptible to environmental factors such as humidity, and relatively expensive to manufacture. For the measurement environment or test conditions with strong e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/06G01M10/00
CPCG01M9/062G01M10/00
Inventor 张代贤史喆羽李国强胡站伟阳鹏宇黄勇肖京平王万波覃晨
Owner LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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