Composite vibration damper for control moment gyro

Abstract

The invention provides a composite vibration damper for a control moment gyro. The composite vibration damper comprises a dynamic vibration absorber and a metal rubber vibration isolator, wherein the dynamic vibration absorber comprises a fastening counterweight (1), a first metal rubber unit (3), a shell (4) and shell fastening bolts; and the metal rubber vibration isolator comprises a sleeve (10), a second metal rubber unit (11), a third metal rubber unit (11) and a fourth metal rubber unit (12). According to the composite vibration damper provided by the invention, the dynamic vibration absorber is mounted on a weight reducing groove of a frame rotor system and the metal rubber vibration isolator is mounted on an engine base of the control moment gyro, thereby overcoming the defects that the vibration of the frame rotor system cannot be damped by a whole machine vibration isolating platform, and the gravity center of a whole machine rises because the control moment gyro is mounted on the whole machine vibration isolating platform. The composite vibration damper has the advantages of being light in weight, small in size and simple in structure.

Description

technical field [0001] The invention relates to a control moment gyroscope technology, in particular to a control moment gyroscope composite damping device. Background technique [0002] As the inertial actuator of the spacecraft, the control moment gyro directly affects the pointing accuracy and stability of the spacecraft. The development of high-precision and high-stability spacecraft platform puts forward high requirements on the micro-vibration index of the control moment gyroscope. According to the structural characteristics of the control torque gyroscope, the structural mass imbalance of the high-speed rotor will cause micro-vibration of the frame-rotor system, which is transmitted to the low-speed components through the frame-rotor system, directly affecting the control accuracy and stability of the low-speed drive. Even if the precision dynamic balancing technology of the high-speed rotor system is adopted, the dynamic unbalance of the high-speed rotor system cann...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide a micro-vibration control torque gyroscope by using a dynamic vibration absorber and a metal rubber vibration isolator, and to solve the defect of a complex structure of the vibration isolation platform of the whole machine Control Moment Gyro Composite Vibration Damping Device

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