Three-axis air floating table center-of-mass balance adjustment method and device thereof

Abstract

The invention provides a three-axis air floating table center-of-mass balance adjustment method and a device thereof. The three-axis air floating table center-of-mass balance adjustment method comprises the steps of a first step, finishing pre-leveling for the center-of-mass of a three-axis air floating table; a second step, performing flywheel controlling when the three-axis air floating table is in a horizontal state, performing fine adjustment in the horizontal direction according to a controlled rotating speed output number of the flywheel; and a third step, obliquely arranging the three-axis air floating table in an offset angle, and performing fine adjustment in the vertical direction according to the controlled rotating speed output number of the flywheel. The three-axis air floating table center-of-mass balance adjustment method and the device have advantages of preventing an error caused by inaccurate introduction of mass characteristic of the three-axis air floating table, more accurately calculating eccentricity and gravity interference moment, improving adjustment precision, shortening adjustment time and providing insurance for subsequent full-physical ground simulation tests.

Description

technical field [0001] The invention relates to rigid body dynamics and attitude control, in particular to a fast and high-precision center-of-mass balance method and device for a three-axis air bearing platform. Background technique [0002] The three-axis air bearing table is mainly used to simulate the zero-gravity, frictionless space environment, to realize the three-axis free rotation, and is widely used in the ground full physical simulation test of the spacecraft. In order to ensure the validity of the ground simulation test, it is necessary to ensure that the disturbance torque of the three-axis air bearing table meets the requirements of the task simulation test. [0003] The load-bearing parts of the three-axis air-floating table are the air-floating ball bearing and the instrument platform. The air film between the air-floating ball and the air-floating ball socket carries the quality of the instrument platform and the analog parts, while ensuring the three-axis l...

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Problems solved by technology

[0005] Li Yanbin and Baotou Steel theoretically proposed in the paper "Dynamic Modeling of Three-DOF Air-floor Table Automatic Balance System" (see "Chinese Journal of Inertial Technology", 2005, Volume 13, No. 5, Page 83-87). The three-axis air flotation table automatic balancing device was proposed, and no specific implementation plan was given, which is difficult for engineering application

[0006] The application number is 200910071536.1, and the name is the invention of the three-axis air-floor table balancing method and its device. The unbalance in the vertical direction of the air bearing table also has a large component influence in the attitude control of the table body, and the scheme proposed by this invention is difficult to meet the requirements of the full physical simulation test of the three-axis air bearing table

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