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    • 103. 发明公开
    • Nonresonant micromachined gyroscopes with structural mode-decoupling
    • Nicht-resonancee,mikrohergestellte Kreisel mit struktureller Moden-Entkopplung
    • EP1568968A2
    • 2005-08-31
    • EP05004022.9
    • 2005-02-24
    • THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    • Shkel,Andrei M.Acar,Cenk
    • G01C19/56
    • G01C19/5719
    • A four-degrees-of-freedom (DOF) nonresonant micromachined gyroscope utilizes a dynamical amplification both in the 2-DOF drive-direction oscillator and the 2-DOF sense-direction oscillator, which are structurally decoupled, to achieve large oscillation amplitudes without resonance. The overall 4-DOF dynamical system is comprised of three proof masses. The second and third masses form the 2-DOF sense-direction oscillator. The first mass and the combination of the second and third masses form the 2-DOF drive-direction oscillator. The frequency responses of the drive and sense-mode oscillators have two resonant peaks and a flat region between the peaks. The device is nominally operated in the flat regions of the response curves belonging to the drive and sense-mode oscillators, where the gain is less sensitive to frequency fluctuations. This is achieved by designing the drive and sense anti-resonance frequencies to match.
    • 四自由度(DOF)非共振微机械陀螺仪利用在结构上解耦的2自由度驱动方向振荡器和2自由度感应方向振荡器中的动态放大,以实现无谐振的大振荡幅度 。 整体4自由度动力系统由三个质量体系组成。 第二和第三质量形成2自由度感知方向振荡器。 第一质量和第二和第三质量的组合形成2自由度驱动方向振荡器。 驱动和感测模式振荡器的频率响应具有两个谐振峰值和峰值之间的平坦区域。 该器件名义上在属于驱动和感测模式振荡器的响应曲线的平坦区域中运行,其中增益对频率波动较不敏感。 这是通过设计驱动和检测反谐振频率来匹配来实现的。