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通过提升谐振腔抗光路变形能力,可以有效提高机械抖动激光陀螺的抗振动性能。对机械抖动激光陀螺振动中光路扭偏的产生机理进行了理论计算与仿真分析,分析结果表明,抖动切向惯性力和振动冲击惯性力是引起振动中光路扭偏的主要原因。通过振动中光路扭偏对振动性能影响的理论分析指出,减小振动附加上去的朗缪尔零偏,提高陀螺抗振性能的两大有效措施是减小工作电流和提高光路抗失谐能力。通过物理试验验证了振动中光路扭偏机理仿真分析的正确性。不同工作电流的振动对比试验表明,降低工作电流可显著提高陀螺的振动性能,这对于机抖激光陀螺振动特性的提升具有重要指导意义和工程实用价值。
The anti-vibration performance of mechanically-dithered laser gyro can be effectively improved by enhancing the optical-path deformability of the resonant cavity. The theoretical calculation and simulation analysis of the mechanism of the optical path torsion deviation in the vibration of a mechanically-dithered laser gyroscope are carried out. The results show that the tangential inertial force and the vibrational impact inertial force are the main causes of the optical path twisting in the vibration. The theoretical analysis of the influence of the optical path twist on the vibration performance shows that the two effective measures to reduce the work-off current and improve the anti-detuning ability of the optical path are to reduce the Langmuir zero offset of the vibration and improve the anti-vibration performance of the gyro. The correctness of the simulation analysis of the mechanism of torsion deviation of the optical path in vibration was verified by physical experiments. The comparison of the vibration of different working current shows that reducing the operating current can significantly improve the vibration performance of the gyroscope, which has important guiding significance and engineering practical value for improving the vibration characteristics of the gyroscope.