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针对振动对光纤陀螺性能的影响,提出改善机械结构与信号处理相结合的抗振技术。根据机械振动机理,应用有限元理论对结构的分析,改善光纤环骨架的设计,提高其共振频率,达到了舰船使用环境的要求;分析了振动对光纤环的调制机理,采用小波滤波的方法对受振动噪声污染的陀螺输出进行信号处理,比较不同小波基的滤波效果,得到适合实际使用的最优选择。
In view of the influence of vibration on the performance of FOG, the anti-vibration technology that improves the combination of mechanical structure and signal processing is proposed. According to the mechanism of mechanical vibration, the finite element theory is used to analyze the structure, to improve the design of the optical fiber ring skeleton, to increase its resonance frequency, and to meet the requirements of the ship’s operating environment. The modulation mechanism of vibration to fiber ring is analyzed, Signal processing is performed on the gyro output contaminated by vibration noise, and the filtering effects of different wavelet bases are compared to get the best choice for practical use.