A multi-dimensional air flotation follow-up system for satellite high-precision quality measurement

Abstract

A multi-dimensional air flotation follow-up system for satellite high-precision quality measurement, including spherical air flotation modules, etc.; the spherical air flotation module supports the weight of the tested part through the upper platform, and the cylindrical air flotation module transmits radial load as a radial support , the force transmission cylinder is set between the spherical air flotation module and the cylindrical air flotation module; the two-axis rotary assembly cooperates with the spherical air flotation to achieve any phase moment balance, and the planar air flotation module is used to support the two-axis rotary assembly, together with the two-axis rotary assembly , cooperate with the spherical air flotation module to achieve any phase moment balance; the differential test module is used as the force transmission path of the spherical joint moment balance to realize the tension pressure balance at any angle in the plane, and test the two-way tension pressure of two coordinate axes; the air circuit control system module is used It is used to provide compressed air for lubricating air bearings to spherical air flotation modules, cylindrical air flotation modules, and planar air flotation modules. The invention can take into account three functions of center of mass and moment of inertia test and high-precision turntable in the satellite assembly link.

Description

technical field [0001] The invention relates to a multi-dimensional air flotation follower system. Background technique [0002] Quality characteristics are a series of mechanical characteristic parameters related to product quality, including mass, center of mass position, moment of inertia and product of inertia, which are inherent parameters to describe the mechanical characteristics of products. This parameter directly affects the motion analysis and attitude control system design of the spacecraft, as well as launch control, orbit control and return control. The accuracy of this parameter directly affects the control accuracy and service life of the spacecraft. [0003] The existing quality measurement system has overcome some problems in the traditional quality measurement technology. It adopts integrated testing technology to realize the satellite installation and positioning at one time, and measure the quality characteristic parameters in all directions step by step...

AI Technical Summary

Problems solved by technology

However, as new models of spacecraft undergo major changes in shape, size, and weight, in order to meet the high-precision testing of products with different weights, it is often necessary to support sensor testing systems with different ranges, resulting in long development cycles and high production costs. , low utilization rate of equipment, etc.

On the other hand, the existing center-of-mass testing technology adopts the multi-point torque balance method. In order to realize the ultra-large load test, it is necessary to select a load cell with a large range. The sensor with the same linearity corresponds to a large system uncertainty, and the torque test accuracy of the system low, especially for spacecraft with relatively large weight and relatively small eccentric moment, the problem becomes more and more prominent

In addition, the existing static testing technology cannot eliminate the positioning error between the product and the test bench, and the switching link between the center of mass and the inertia test is manually used during the test process, which has low test efficiency, high labor intensity, and has a negative effect on the operator's skills. special requirements

Images