An axial centroid measuring device and method based on the principle of moment balance

A torque balance and measuring device technology, applied in the direction of measuring device, static/dynamic balance test, machine/structural component test, etc., can solve problems such as error, controlled sensor accuracy and installation, and difficulty in achieving high accuracy

Active Publication Date: 2020-10-23
BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH +1
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  • Abstract
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  • Application Information

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Problems solved by technology

This test method is relatively simple, and can measure mass and centroid parameters at the same time. However, due to the limitation of sensor accuracy and installation error, the accuracy of this method is generally difficult to reach a high level.

Method used

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  • An axial centroid measuring device and method based on the principle of moment balance
  • An axial centroid measuring device and method based on the principle of moment balance
  • An axial centroid measuring device and method based on the principle of moment balance

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Embodiment Construction

[0050] An axial center-of-mass measurement device based on the principle of moment balance, including a first-stage platform 2, which directly acts on the top of the main knife 6, and the main knife 6 is used to support the first-stage platform 2 and the components above it and maintain balance; the electromagnetic torque Device 1 is used to balance the measuring device after the weights are roughly matched during measurement. The tooling positioning pin 3 and the product positioning pin 4 are used for positioning the product tooling 5 and the product under test 7 respectively; the secondary platform 12 is arranged on the primary platform 2 above, and can be tilted 7°~8° on the first-level platform 2 around the platform shaft 11, the cushion block 13 is used to support the second-level platform 12 to form a fixed angle of inclination with the first-level platform 2, and the jacking mechanism 8 will The first-level platform 2 and the parts above it are jacked up, thereby breakin...

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Abstract

The invention provides an axial mass center measuring device based on a moment balance principle and a method thereof. The device comprises the components of a first-stage platform which directly functions on the upper part of a main blade, wherein the main blade is used for supporting the first-stage platform and an upper component and keeping balance; an electromagnetic torquer which is used formeasuring device balance after rough counterweight matching in measurement, wherein a tool fixing pin and a product fixing pin are respectively used for fixing a product tool and fixing a measured product; a second-stage platform which is arranged above the first-stage platform and inclines around a platform rotating shaft on the first-stage platform, a cushion block is used for supporting the second-stage platform so that a fixed inclination included angle is formed between the cushion block and the first-stage platform, and a lifting mechanism lifts the first-stage platform and a componentabove the first-stage platform, thereby disengaging from the main blade; and a two-dimensional secondary blade which supplies a force point position to the counterweights.

Description

technical field [0001] The invention belongs to the field of centroid measurement, and in particular relates to an axial centroid measurement device and method based on the principle of moment balance. Background technique [0002] The center of mass is one of the important static parameters of the aircraft, which will directly affect the flight attitude of the aircraft, and even affect the hit probability of the system. At present, the center of mass test at home and abroad mainly adopts the multi-point support weighing method. The basic test principle of the multi-support weighing method is to use three or more load cells to jointly support the object to be measured, so that each sensor is stressed, and then calculate the moment based on the position of each sensor relative to the reference center point. This test method is relatively simple, and can measure mass and centroid parameters at the same time. However, due to the limitation of sensor accuracy and installation er...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M1/12
CPCG01M1/12
Inventor 孙凤举闫磊白天王小三高炳涛
Owner BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH
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