Real-time measurement method of dynamic radius and dynamic misalignment angle of precision centrifuge and device thereof
A precision centrifuge, dynamic radius technology, used in measuring devices, electromagnetic measuring devices, electromagnetic/magnetic diameter measurement, etc., to achieve the effect of improving accuracy, improving measurement accuracy, and eliminating uncertainty
Active Publication Date: 2011-04-27
北京航天万鸿高科技有限公司
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Problems solved by technology
[0003] The technical problem of the present invention is: to overcome the defects of the prior art, to provide a real-time measurement method and device for the dynamic radius and dynamic misalignment angle of a precision centrifuge, and to solve the problem of dynamic radius and dynamic misalignment when the centrifuge rotates at high speed The problem of real-time measurement of angles and improved measurement accuracy
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[0028] Such as figure 1 As shown, two pairs of distance measurement sensors are installed in a 180° symmetrical manner outside the edge of the centrifuge table, wherein the first pair of distance measurement sensors C1 and C3 are aligned with the outer edge of the mounting block of the test piece on the table, and the second pair of distance measurement sensors The sensors C2 and C4 are aligned with the upper edge of the mounting block of the DUT on the table. At the same time, install the third pair and the fourth pair of distance measurement sensors perpendicular to each other at the reserved reference plane of the shaft end of the centrifuge, wherein the third pair of distance measurement sensors C5 and C6 are installed along the radial direction of the centrifuge shaft, and the fourth pair of distance measurement sensors Measuring sensors C7, C8 are installed axially along the centrifuge shaft. The distance measurement sensor probe points to the measured part installation...
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The invention provides a real-time measurement method of dynamic radius and a dynamic misalignment angle of a precision centrifuge and a device thereof, wherein, 8 capacitance sensors are arranged outside the edge of the table top and on the shaft end of the centrifuge to respectively point to a mounting block of a measured piece on the table top and the datum plane on the shaft end. The method comprises the following steps: accessing the output signal of the capacitance sensors to a data acquisition board of an industrial personal computer, taking a pulse signal of an angle encoder of the centrifuge after frequency division as a sampling trigger signal so as to guarantee the sampling points of each ring at the same position; allowing the centrifuge to continuously rotate with a lower speed to measure a static value; allowing the centrifuge to rotate with a high speed to measure a dynamic value; and subtracting the static value corresponding to the angle by the dynamic value to obtaindynamic variation and the dynamic misalignment angle of the table top of the centrifuge after calculation.
Description
technical field [0001] The invention relates to a real-time measurement method and device for the dynamic radius and dynamic misalignment angle of a precision centrifuge, which can be applied to the measurement of the dynamic radius and dynamic misalignment angle of the precision centrifuge in the field of inertial device testing equipment. Background technique [0002] The existing precision centrifuge dynamic radius and dynamic misalignment angle measurement method is: the inductance sensor, capacitance sensor equidistant measurement sensor is arranged on a fixed bracket, when the centrifuge arm turns over the sensor, the sensor probe can be measured The distance between the centrifuge and the rotating arm is recorded, and the measurement results of each circle are recorded, and then the dynamic radius of the centrifuge can be obtained by the distance change at high and low speeds. When the precision centrifuge rotates at high speed, the table will be stretched and deforme...
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IPC IPC(8): G01B7/02G01B7/12G01B7/30G01D5/24
Inventor 胡吉昌王胜利黄林生杨明
Owner 北京航天万鸿高科技有限公司