Device for simulating weightlessness environment based on nitrogen spring and air floating cushion

Abstract

The invention discloses a device for simulating weightlessness environment based on a nitrogen spring and an air floating cushion, which comprises a bottom plate, a hinge fixing mechanism, a space hinge, a balancing weight, an air floatation supporting mechanism and a vibration excitation device, the hinge fixing mechanism, the air floatation supporting mechanism and the vibration excitation device are sequentially mounted on the bottom plate, one end of the space hinge is connected with the hinge fixing mechanism, the other end of the space hinge is connected to one side face of the balancing weight, the other side face of the balancing weight is connected with a vibration excitation rod of the vibration excitation device, and the balancing weight is arranged on the air floatation supporting mechanism and forms air floatation supporting on the balancing weight through the air floatation supporting mechanism. The device is used for measuring the dynamic stiffness, so that the inherent characteristics of the rubber rope can influence the accuracy of a test result, and the air flotation device is used for reducing the influence of the outside on the dynamic stiffness of the hinge.

Description

technical field [0001] The invention relates to the field of dynamic stiffness test of a solar battery array hinge mechanism, and more specifically relates to a device for simulating a weightless environment based on a nitrogen spring and an air floating pad. Background technique [0002] A satellite solar cell array is generally composed of several substrates with solar cells attached, and the connections between the substrates and between the solar cell array and the star are connected by space hinges. For this reason, dynamic modeling and simulation analysis are required in the design process of solar cell arrays, and accurate simulation of complex hinges is a major problem. Facts have proved that the stiffness of the hinge has a significant impact on dynamic modeling and simulation analysis. For this reason, it is necessary to use a vibrator to excite the counterweight connected to the hinge in a simulated weightless environment to achieve resonance to obtain the dynamic...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the above-mentioned air flotation device cannot adapt to the transformation of the simulated weightlessness environment caused by the deviation of the center of gravity of the object and cannot adjust the height, resulting in neglect of the force between the hinges, and proposes a simulated weightlessness environment device based on nitrogen springs and air flotation pads , which effectively avoids the influence of the force between the hinges on the dynamic stiffness test, and can maintain the level of the air bearing platform when the center of gravity shifts when the counterweight is excited by the vibrator

Images