Micro-vibration parallel connection vibration isolation device for satellite control moment gyro group

Abstract

The invention provides a micro-vibration parallel connection vibration isolation device for a satellite control moment gyro group. The control moment gyro group comprises m control moment gyros, wherein m is larger than or equal to 3 and is smaller than or equal to 6. The control moment gyros are evenly installed on the periphery close to the circle center of a satellite cellular board. The micro-vibration parallel connection vibration isolation device is mainly composed of vibration isolator assemblies located between a satellite load-bearing cylinder and a satellite cellular board. Each vibration isolator assembly comprises an upper connecting rod, a lower connecting rod, a vibration isolator, a movable plate, a damping layer and a static plate, wherein the upper connecting rod is connected with the load-bearing cylinder, the lower connecting rod is connected with the cellular board, and the vibration isolator, the movable plate, the damping layer and the static plate are located between the upper connecting rod and the lower connecting rod and sequentially connected through connecting pieces. The number of the vibration isolator assemblies is 2n, wherein n is larger than or equal to 3 and is smaller than or equal to 8. Every two adjacent vibration isolator assemblies form one set through an upper adapter and fixed to the satellite cellular board through a lower adapter. The n sets of vibration isolator assemblies are evenly distributed in the circumferential direction of the satellite cellular board. According to the micro-vibration parallel connection vibration isolation device, interference, formed by micro-vibration response caused during in-orbit operation of the CMGs, on sensitive loads can be remarkably lowered, and stability, reliability and safety of the satellite-borne high-precision sensitive loads during in-orbit operation are ensured.

Description

technical field [0001] The invention relates to a parallel vibration isolation device, in particular to a micro-vibration parallel vibration isolation device for a satellite control moment gyroscope group. Background technique [0002] In order to achieve the purpose of on-orbit operation and fast maneuvering of satellites, the control moment gyroscope (CMG) has been applied to the development of satellite models as an actuator. Similar to the flywheel, due to the static and dynamic imbalance of the CMG rotor, the difficulty of the bearing process, and other processing errors, the CMG becomes the main factor affecting the performance index of the satellite's sensitive load. The vibration generated by CMG is generally higher than 20Hz, and this high-frequency vibration will directly affect the stars. Therefore, it is necessary to suppress the vibration generated by CMG to provide an ultra-quiet environment for satellite sensitive loads. [0003] At present, there is no vibr...

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Problems solved by technology

[0004] Aiming at the defects in the above-mentioned prior art, the present invention provides a micro-vibration parallel vibration isolation device for satellite control moment gyroscopes, which has the characteristics of good vibration isolation effect, light weight, small size, easy manufacture, and low cost, so as to solve the problem of The technical problem that the vibration response of CMGs output is large when the satellite is in orbit

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