Method for performing dynamic balance test on large rotating part

Abstract

The invention discloses a method for performing a dynamic balance test on a large rotating part. The method is used for performing the dynamic balance test on the large rotating part on a test device comprising a three-shaft air-floating platform, a gyroscope, a XPC computer. The method comprises the following steps of testing the static unbalance amount of the rotating part to obtain the amount and the direction of the static unbalance amount of the rotating part; calibrating a diagonal speed zero signal; and testing the couple unbalance amount of the rotating part. By the method, the problems on the correction test and the robustness test of the dynamic balance test of the rotating part are solved, and the beneficial effects of improving the dynamic balance of the rotating part and reducing the influence of the rotating part on posture are achieved.

Description

technical field

[0001] The invention relates to the field of mechanics, in particular to a method for performing dynamic balance testing on large rotating parts. Background technique

[0002] The microwave imager used on the satellite works by mechanical scanning. The weight of its rotating part is 60kg, and the rotation period is divided into two gears: 1.7s and 2s. When the large-scale high-speed rotating components represented by microwave imagers are running, the disturbance torque generated by the dynamic unbalance exceeds the control bandwidth of the attitude-orbit control subsystem and cannot be effectively controlled, which will cause great disturbance to the attitude. It will also cause the coupling of other flexible parts, causing the satellite to not work properly. Therefore, before installing the star, the interference torque measurement of the large rotating parts should be carried out, and the static unbalance and dynamic unbalance should be balanced to reduce...

Examples

Embodiment Construction

[0027] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0028] Before describing the method of the present invention, the testing device used in the present invention is first described.

[0029] like figure 1 As shown, the testing device used in the present invention includes a three-axis air-floating table 1 , a gyroscope 2 and an XPC computer 3 . Among them, the three-axis air flotation stage 1 selects spherical air flotation bearings to support the simulated stage body, so as to realize the simulation of the microgravity and the free rotation environment in the three axis directions of X, Y and Z within a certain angle range; the gyroscope be installed on the three-axis air-floating table 1, for measuring the rotational angular velocity of the three-axis air-floating table; the XPC computer 3 collects the angular velocity signal measured by the gyroscope 2 in real time, and eliminates the measurement...

technical field

[0001] The invention relates to the field of mechanics, in particular to a method for performing dynamic balance testing on large rotating parts. Background technique

[0002] The microwave imager used on the satellite works by mechanical scanning. The weight of its rotating part is 60kg, and the rotation period is divided into two gears: 1.7s and 2s. When the large-scale high-speed rotating components represented by microwave imagers are running, the disturbance torque generated by the dynamic unbalance exceeds the control bandwidth of the attitude-orbit control subsystem and cannot be effectively controlled, which will cause great disturbance to the attitude. It will also cause the coupling of other flexible parts, causing the satellite to not work properly. Therefore, before installing the star, the interference torque measurement of the large rotating parts should be carried out, and the static unbalance and dynamic unbalance should be balanced to reduce...

Examples

Embodiment Construction

[0027] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0028] Before describing the method of the present invention, the testing device used in the present invention is first described.

[0029] like figure 1 As shown, the testing device used in the present invention includes a three-axis air-floating table 1 , a gyroscope 2 and an XPC computer 3 . Among them, the three-axis air flotation stage 1 selects spherical air flotation bearings to support the simulated stage body, so as to realize the simulation of the microgravity and the free rotation environment in the three axis directions of X, Y and Z within a certain angle range; the gyroscope be installed on the three-axis air-floating table 1, for measuring the rotational angular velocity of the three-axis air-floating table; 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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