Two-parameter micro-vibration active and passive vibration isolation platform and system

Abstract

The utility model provides a two-parameter micro-vibration active and passive vibration isolation platform and a system. The two-parameter micro-vibration active and passive vibration isolation platform comprises an end cover, a first bellows, a second bellows, a damping hole connecting piece, a flange connecting sleeve, a flange tail end, a piston, a buffer protection cover and a damping hole, wherein the inner side end of the end cover, the first bellows, the damping hole connecting piece, the second bellows and the inner side end of the flange tail end are sequentially connected; the damping hole penetrating through the two ends of the damping hole connecting piece is formed in the damping hole connecting piece; the first bellows and the second bellows store viscous liquid. A two-parameter vibration isolator is formed from damping generated by the bellows and the viscous liquid, the formant amplitude can be reduced under the condition that the maximum damping is obtained, friction and delaying in the vibration isolation process are effectively avoided, the low-frequency longitudinal movement of the platform is controlled, and the defect of passive vibration isolation is overcome. The two-parameter micro-vibration active and passive vibration isolation platform has the advantages of being light in weight, good in trial assembly and simple in design and can meet quality restriction and requirements on vibration isolation frequency.

Description

technical field [0001] The invention belongs to the field of micro-vibration active control and vibration reduction, and relates to the design of a satellite micro-vibration active and passive vibration isolation platform, especially the platform combines the advantages of active and passive control, and can realize effective micro-vibration control in a wide frequency range . Background technique [0002] To suppress micro-vibration, we must first understand the characteristics of the vibration source, such as the cause of the vibration source, the excitation method, and the vibration characteristics of the vibration source. For the satellite platform in the orbit state, in terms of the factors causing vibration, the vibration sources on the satellite can be divided into external disturbance sources and internal disturbance sources. [0003] External disturbance sources mainly include: solar radiation light pressure, particle collision, sun and moon gravitational force, or...

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Problems solved by technology

[0007] The disadvantages of the existing technology are: this type of application is relatively rare in domestic literature and patents, and the existing structure has the following disadvantages, such as low flexibility, complicated structure, and less damping, and at the same time, in terms of structure, there will be unnecessary Hysteresis and Friction

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