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Dynamic balance testing method for rotatable part

A technology of rotating parts and testing methods, which is applied in the field of mechanics, can solve problems such as inconsistent states, and achieve the effects of improving accuracy, improving measurement accuracy, improving measurement accuracy and trimming efficiency

Active Publication Date: 2014-09-03
SHANGHAI SATELLITE ENG INST
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In order to solve the deficiencies of the dynamic balance test and trim of the rotating parts in the prior art, and the inconsistency of the state, the present invention proposes to realize the independent measurement of the static unbalance and dynamic unbalance, the complete machine trim of the rotating parts, and ensure the balance state and assembly. Dynamic balance test method of rotating parts with consistent star state

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Embodiment Construction

[0027] Preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0028] Before describing the method of the present invention, the test device to be used in the present invention will be described first.

[0029] Such as figure 1 As shown, the testing device to be used in the present invention includes a three-axis air bearing table 1 , a gyroscope 2 and an XPC computer 3 . Wherein, the three-axis air bearing platform 1 selects a spherical air bearing to support the simulated platform body to realize microgravity within a certain angle range and the simulation of the free rotation environment in the directions of X, Y, and Z axes; the gyroscope Installed on the three-axis air bearing platform 1, it is used to measure the rotational angular velocity of the three-axis air bearing platform; the XPC computer 3 collects the angular velocity signal measured by the gyroscope 2 in real time, and eliminates the measurement ...

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Abstract

The invention discloses a dynamic balance testing method for a rotatable part, which is used for testing dynamic balance of the rotatable part on a testing device, wherein the testing device comprises a three-shaft air bearing table, a gyroscope and an XPC computer. The method includes: testing static unbalance amount of the rotatable part to obtain the size and direction of the static unbalance amount of the rotatable part; correcting angular speed zero signals; and testing even unbalance amount of the rotatable part. The method solves the problems of correctness testing and robustness testing in balance test of the integral rotatable part, and has the advantages that dynamic balance of the rotatable part is improved while attitude disturbance by the rotatable part is reduced.

Description

technical field [0001] The invention relates to the field of mechanics, in particular to a method for testing the dynamic balance of rotating components. Background technique [0002] The microwave imager used on the satellite works in a mechanical scanning mode. The weight of the rotating part is 60kg, and the rotation period is divided into two levels: 1.7s and 2s. When the large-scale high-speed rotating parts represented by the microwave imager are running, the disturbance torque generated by the dynamic unbalance exceeds the control bandwidth of the attitude-orbit control subsystem, and it cannot be effectively controlled, which will cause great interference to the attitude. It will also cause coupling of other flexible parts, causing the satellite to not work properly. Therefore, before installing the star, the interference torque of the large rotating parts should be measured, and the static unbalance and dynamic unbalance should be trimmed to reduce the interference...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M1/16
Inventor 杨立峰薛孝补朱海江吕旺
Owner SHANGHAI SATELLITE ENG INST
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