Device and method for reducing oscillator accelerated speed effect through mixed compensation

Abstract

The invention discloses a device and method capable of reducing the oscillator accelerated speed effect, and aims at providing a device and method for reducing the accelerated speed effect through the cooperation of mechanical compensation and real-time compensation. The device is composed of an oscillator, an accelerated speed sensor, an accelerated speed compensation circuit, an elastic support and a metal shell. The elastic support is a supporting piece which has the elasticity, can generate deformation under the 0-100 g accelerated speed condition, and can achieve self recovery. The method is characterized in that high-frequency vibration is reduced through the elastic support, the offset voltage is generated in real time through the accelerated speed compensation circuit to be applied to the oscillator, and frequency changes caused by low-frequency vibration are offset. By means of the device and method, influences of 2-2 KHz vibration on the output performance of the oscillator can be effectively reduced, and the oscillator accelerated speed effect can be better reduced.

Description

technical field [0001] The invention relates to a device and method for vibration compensation of an oscillator, which is applied to high-precision frequency control occasions, such as precision electronic equipment in aviation, spaceflight and various vibration occasions. . Background technique [0002] Oscillators such as ovenized crystal oscillators, atomic frequency standards, etc. contain quartz crystals. Because the quartz crystal is sensitive to acceleration, the parameters of the quartz crystal change in the vibration environment, resulting in a change in the output frequency, an increase in phase noise, and a reduction in the performance of electronic equipment. [0003] At present, people have done research on the mechanical structure, and adopted various buffering techniques in the machine to reduce the impact of vibration on the oscillator. However, mechanical buffering is only effective for high-frequency vibrations (generally referring to vibrations above 100...

AI Technical Summary

Problems solved by technology

Since the vibration frequency band of the airborne and missile-borne environment is generally 2-2KHz, the mechanical buffer is mainly effective for the vibration in the 100Hz-2KHz frequency band, and the compensation method published in the literature [1] is mainly effective for the vibration below 300Hz, so there is no one at present. One method can cover all vibration frequency bands

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