Measurement method for spatial six-dimensional force

A measurement method, six-dimensional force technology, applied in the direction of measuring force components, force/torque/power measuring instruments, measuring devices, etc., can solve the problems of destroying the shape of the model, prone to swinging, interference, etc., to reduce size design, Effects of improving measurement accuracy and reducing stress

Active Publication Date: 2017-11-17
DALIAN UNIV OF TECH
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Problems solved by technology

Although the tension line measurement can solve the problem of support interference very well, the hanging point of the pure tension line support on the model destroys

Method used

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  • Measurement method for spatial six-dimensional force
  • Measurement method for spatial six-dimensional force
  • Measurement method for spatial six-dimensional force

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Embodiment Construction

[0025] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings. Wherein, the same parts adopt the same reference numerals.

[0026] Such as figure 1 As shown, a method for measuring the six-dimensional force in space is used to measure the six-dimensional force in space suffered by a long and narrow, large-mass object 1. It is characterized in that: the upper tension line 2, the lower tension line 5 and the first rigid support of the tail are used Rod 8, the second tail portion rigid support rod 9 combination modes. The object model is regarded as fixed during the actual measurement process, and according to the principle of static balance, a mathematical model of the six-dimensional force that the model is subjected to in space is established. The first three-way pressure sensor 6 of the fir...

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Abstract

The invention discloses a measurement method for a spatial six-dimensional force, and the method is used for measuring the spatial six-dimensional force of an aircraft model, and employs a mode of combining a double-tail support and bracing wires. The method comprises the steps: considering the model to be fixed in an actual measurement process, building a mathematic model of a six-dimensional force withstood by the model in a space according to the principle of static equilibrium, measuring the component of an acting force withstood by the model through a three-directional pressure sensor installed at a tail supporting rod and a unidirectional force piezoelectric sensor connected with an upper bracing wire and a lower bracing wire, and achieving the measurement of the six-dimensional force withstood by the model through solving the built mathematic model. According to the invention, the method has the advantages in that the bracing wires are small in supporting interference and a hard-type supporting system is good in stability, and overcomes the difficulties of big vibration and instability when a narrow, long and heavy module employs a single-tail supporting mode. After the bracing wire auxiliary supporting is added, the method improves the rigidness of a testing system, reducing the pressure on the rigidness design of a tail support, and reduces the size of the tail support.

Description

technical field [0001] The invention belongs to the technical field of sensors and measurement and control, and relates to a method for measuring space six-dimensional forces applicable to aircraft models. Background technique [0002] In the field of aviation, it is necessary to design and improve the aircraft model according to the force state of the aircraft model. Therefore, it is of great significance to measure the space six-dimensional force on the aircraft model. The traditional measurement method is to use support methods such as belly support, back support, and tail support for the aircraft model, and measure it through strain sensors. There are different degrees of support interference in this support method, which seriously affects the precision and accuracy of the measurement data. Therefore, reducing or correcting the support interference problem can effectively improve the precision and accuracy of measuring the force state of the aircraft model. The essenc...

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Application Information

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IPC IPC(8): G01L5/16
CPCG01L5/167
Inventor 任宗金张军任明帅贾振元化梅刘帅孙聪
Owner DALIAN UNIV OF TECH
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