Cable pulling translational passive crystal vibration damping device

Abstract

The invention discloses a cable pulling translational passive crystal vibration damping device. The cable pulling translational passive crystal vibration damping device comprises a peripheral support, cable adjusting mechanisms I and a protected vibration damping platform, wherein the peripheral support serves as a rack, the cable adjusting mechanisms I are arranged on the peripheral support, and the protected vibration damping platform is connected with the cable adjusting mechanisms I through pulling cables; the cable lengths of the pulling cables are micro-regulated through the cable adjusting mechanisms I, so that the protected vibration damping platform is kept stable at a required fixed frequency. According to the cable pulling translational passive crystal vibration damping device, ropes are adopted for vibration damping so that the natural frequency of a vibration damping system can be reduced effectively; vibration damping in three translational directions which are mutually perpendicular in a space can be realized through different prestressing forces and different topological forms of the ropes; due to the fact that rope deformation has geometric nonlinearity, the device has a certain impact resistance capacity; small changes in cable stress can cause obvious changes in the natural frequency, so that a high-precision cable adjusting mechanism is needed to be adopted, and the function of an adjustable vibration damping frequency can be realized accurately.

Description

technical field [0001] The invention relates to the field of mechanical precision instruments, and relates to a vibration damping device for a crystal oscillator, in particular to a cable-tracted translational motion passive crystal vibration damping device. Background technique [0002] Frequency synthesizers in airborne electronic equipment need crystal oscillators to provide reference signals. High-stable crystal oscillators have outstanding advantages such as low phase noise, high frequency temperature stability, and high frequency accuracy. They are called the "heart" of the system in many fields. , affecting and restricting the performance of the system and even the spacecraft. However, the external environment has a great influence on the working performance of the crystal oscillator. The main performance is that the vibration and shock of the external environment will deteriorate the characteristics of the output electrical signal of the crystal oscillator and increa...

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Problems solved by technology

[0004] At present, the crystal vibration damping devices of most research institutions have the following limitations: First, most devices use rubber, springs, steel wire ropes, and gaskets as vibration damping materials, and the fundamental frequency of the vibration damping system using this vibration damping material It is often high and cannot effectively isolate low-frequency vibrations; second, most vibration reduction systems often perform vibration reduction control based on a single frequency or a single degree of freedom, and their vibration reduction capabilities are not universal; third, many The shock resistance of the shock absorber is poor

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