A two-dimensional center of mass measurement device and method based on the principle of moment balance
A measurement device and torque balance technology, which is applied in the field of two-dimensional centroid measurement devices based on the principle of torque balance, can solve problems such as difficult to achieve high accuracy, errors, controlled sensor accuracy and installation, etc., and achieve the effect of improving measurement accuracy
Active Publication Date: 2021-01-05
BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH +1
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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.
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[0045] A two-dimensional center-of-mass measurement device based on the principle of moment balance, including a two-dimensional main knife 6, which includes two upper and lower mutually orthogonal knives and a knife bearing between the two knives, the measuring device includes two electromagnetic moment Device 1 is used to balance the measuring device after the weights are roughly matched during measurement. Tooling positioning pin 3 and product positioning pin 4 are used for positioning product tooling 5 and tested product 7 respectively; jacking mechanism 8 lifts measuring platform 2 , so as to break away from the two-dimensional main knife 6; the two-dimensional auxiliary knife 9 provides an accurate force point position for the counterweight 10, wherein the electromagnetic torque device 1, the two-dimensional auxiliary knife 9, and the counterweight 10 are all in two positive positions in the horizontal plane. There is one in each cross direction;
[0046] A two-dimension...
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The invention provides a two-dimensional mass center measuring device based on a moment balance principle and a method thereof. The device comprises a two-dimensional main blade. The two-dimensional main blade comprises an upper blade, a lower blade, and a blade support between the two blades, wherein the upper blade and the lower blade are orthogonal with each other. The measuring device comprises two electromagnetic torquers 1 which are used for measuring device balance after rough counterweight matching in measurement. A tool fixing pin and a product fixing pin are respectively used for fixing a product tool and a measured product. A lifting mechanism lifts a measuring platform, thereby disengaging with the two-dimensional main blade. Two-dimensional secondary blade provide an accurateforce point position to counterweights, wherein one electromagnetic torquer, one two-dimensional secondary blade and one counterweight exist in one of the two orthogonal directions in a horizontal plane.
Description
technical field [0001] The invention belongs to the field of centroid measurement, and in particular relates to a two-dimensional 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 instal...
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IPC IPC(8): G01M1/12
CPCG01M1/12
Inventor 王小三赵宝瑞钟山孙凤举闫磊白天
Owner BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH