A Lightweight Onboard Actuator Vibration Isolation Device

Abstract

The invention discloses a vibration isolation device for a lightweight actuator on a star, which includes an actuator, an upper platform and a lower platform; Three actuators are installed between them, and the three actuators are jointly hinged at one point on the upper platform. The vertical projection of the center of mass of the disturbance source on the upper platform coincides with the hinge points of the three actuators on the upper platform. The actuators are respectively hinged at three points on the lower platform, and the line connecting the three points forms an equilateral triangle, and the vertical projection of the center of mass of the disturbing vibration source on the lower platform coincides with the center of the equilateral triangle. The invention changes the installation configuration of the control moment gyroscope by using different hinged ways to install the actuator, and overcomes the singular problem of controlling the moment gyroscope group; through the cooperation of movable elements, vibration isolation elements and sensors, it solves the The vibration disturbance problem of the actuator of the rotor; the present invention also has the characteristics of lightness, miniaturization and intelligence.

Description

technical field [0001] The invention relates to a lightweight on-board actuator vibration isolation device, which is especially suitable for vibration suppression of a control moment gyroscope group with singularity in the attitude control process, and belongs to the vibration isolation technical field of high-speed rotor disturbance source actuators. Background technique [0002] Optical loads installed on high-resolution satellites are generally very sensitive to vibration, and actuators such as flywheels with high-speed rotors and control moment gyroscopes are one of the most important sources of disturbance on the satellite. [0003] During the on-orbit operation of actuators with high-speed rotors such as flywheels and control moment gyroscopes, disturbances containing various simple harmonic vibration components will be generated. Stand-alone product for measurement accuracy. For satellites that need to quickly maneuver from one target to another, complete a large num...

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, the present invention provides a light-weight planetary actuator vibration isolation device, by installing actuators in different hinged ways between the upper platform and the lower platform, The installation configuration of the control moment gyro has been changed, and the singular problem of the control moment gyro group has been overcome; through the cooperation of movable elements, vibration isolation elements and sensors, the structure of the actuator has been optimized, and the problem of actuators with high-speed rotors has been solved. Vibration disturbance problem; through the mutual cooperation of the three actuators, the weight of the vibration isolation device is reduced, which makes up for the bulky and complicated defects of the traditional vibration isolation device

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