Micro-vibration isolation and vibration absorption combined vibration reduction device for satellite flywheel

Abstract

The invention provides a micro-vibration isolation and absorption combined damping device used for a satellite flywheel. The micro-vibration isolation and absorption combined damping device comprises an upper platform and the like. Three rectangular bosses are evenly distributed in the circumferential direction of the upper platform and used for being connected with vibration absorption device joint pieces; three trapezoid corners which are evenly distributed are arranged on the upper platform in the circumferential direction and located on the symmetrical faces of the adjacent rectangular bosses, and a plurality of first light holes with the diameter of 3.3 mm are formed in the trapezoid corners and used for being connected with upper joint pieces. Three grooves which are evenly distributed are formed in a lower platform in the circumferential direction and used for being connected with lower joint pieces. Vibration isolator assemblies are formed by combining the upper joint pieces, vibration isolators, movable pieces, damping layers, fixed pieces and linings. The upper platform and the lower platform are connected through the lower joint pieces and the vibration isolator assemblies. Vibration absorption device assemblies are formed by connecting tuning mass blocks and vibration absorption device elastic units. By means of the micro-vibration isolation and absorption combined damping device, the micro-vibration responses caused when the flywheel runs on orbit can be remarkably reduced, and the stability, reliability and safety of high-accuracy sensitive loads on a satellite during on-orbit running are ensured.

Description

technical field [0001] The invention relates to a vibration damping device, in particular to a micro vibration vibration isolation and vibration absorption combined vibration damping device for a satellite flywheel. Background technique [0002] With the development of my country's satellites in the direction of high precision, high stability, and long life, the sensitive loads carried by them are increasingly demanding on the micro-vibration environment of the platform. The study found that the flywheel vibration is the main factor affecting the satellite payload performance index, and the flywheel vibration is mainly caused by factors such as uneven distribution of rotor mass, structural flexibility, motor controller error and bearing noise. Commonly used flywheel vibration control methods include damping, vibration absorption, structural rigidity, vibration isolation, and so on. The effect of damping vibration absorption is only obvious when it is in resonance; the vibra...

AI Technical Summary

Problems solved by technology

According to the literature search of the existing technology, it is found that there is no combined vibration reduction device for micro-vibration isolation and vibration absorption for satellite flywheels. The design constraints of the combined vibration reduction device mainly include three aspects: First, it is necessary to reduce The vibration response of the flywheel mounting plate; the second is to realize the lightweight design of the structure and the optimized design of the envelope size, saving the entire star resources; the third is to replace the original flywheel bracket with a joint vibration damping device to reduce costs

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