Spacecraft in-orbit micro vibration low-frequency vibration isolation device

Abstract

The invention discloses a spacecraft in-orbit micro vibration low-frequency vibration isolation device. The spacecraft in-orbit micro vibration low-frequency vibration isolation device mainly comprises a vibration isolation object supporting plate, a vibration isolation spring, a damper, inner hinges, a spring tension amount adjusting device, outer hinges and a base. The periphery of the vibration isolation object supporting plate is connected with one side of a vibration isolation unit composed of the vibration isolation spring and the damper in parallel through the multiple inner hinges, and the other side of the vibration isolation unit is connected with the spring tension amount adjusting device through the multiple outer hinges. The vibration isolation unit can freely rotate around the inner hinges and the outer hinges overall. When a vibration isolation object vibrates to produce displacement, the inner hinges and the outer hinges provide the rotational freedom degree for the vibration isolation unit, and the effect that the spring produces tensile deformation so as to conduct vibration isolation is ensured. According to the spacecraft in-orbit micro vibration low-frequency vibration isolation device, spacecraft in-orbit micro vibration isolation is achieved, the satellite in-orbit disturbance component vibration isolation technological level is improved, and the requirement for the in-orbit micro vibration environment of satellites, especially high-precision earth observation satellites is met.

Description

technical field [0001] The invention belongs to the technical field of vibration control of spacecraft products, and in particular relates to a method and device for in-orbit micro-vibration low-frequency vibration isolation of spacecraft. Background technique [0002] Improving the accuracy of spacecraft product missions is an important trend in the development of satellites, such as earth observation remote sensing, laser communication, space science experiments, deep space exploration and other fields. With the improvement of mission accuracy, the payload on the satellite puts forward more and more stringent requirements on the micro-vibration environment of the satellite during the orbit, so as to achieve the designed mission index. However, in order to ensure conventional functions such as satellite attitude control, thermal control, and solar wing orientation to the sun, many electromechanical equipment installed and operated on the satellite will cause tiny vibrations...

AI Technical Summary

Problems solved by technology

However, the theoretical limitations of passive vibration isolation still exist, such as the contradiction between resonance amplification and high-frequency vibration suppression, and changing the stiffness requires complex equipment. Semi-active vibration isolation is still limited by passive vibration isolation in essence.

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