【摘要】 研究微石英音叉陀螺的工作原理和微弱角速度信号的提取方法 .从石英音叉陀螺敏感振动的近似动力学方程出发 ,推导了由哥氏惯性力引起的稳态和暂态振动信号以及陀螺检测输入角速度的灵敏度 ,并分析了材料各向异性与加工误差引起的正交误差信号特点 ,在此基础上分析了包含角速度信息的稳态信号与暂态信号、正交误差信号的差异 ,指出利用相关检测技术可在强背景噪声条件下提取出角速度信号 ,并通过数字仿真验证了角速度提取方案的可行性 .更多还原

【Abstract】 The principle of micro quartz tuning fork gyroscope and the detecting method for weak angualr rate signals are studied. Based on the approximate dynamical equation of sensing vibration, the steady and transient vibration signals caused by Coriolis forces are studied, and the quadrature error signal caused by the anisotropy of quartz and the fabrication tolerance is analyzed. Differences among the steady signal which contains the angular rate information, the transient signal and quadrature error signal are analyzed, and the method of correlation detection can be used to extracte the input angular rate signal. The practicability of the method is verified by digital simulation at the end.更多还原