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    • 2. 发明授权
    • Angular rate sensor having a tuning-fork structure
    • 具有音叉结构的角速率传感器
    • US5212985A
    • 1993-05-25
    • US643115
    • 1991-01-18
    • Hiroshi TakenakaKazumitsu UedaToshihiko IchinoseJiro Terada
    • Hiroshi TakenakaKazumitsu UedaToshihiko IchinoseJiro Terada
    • G01C19/56G01C19/5607
    • G01C19/5607
    • An angular rate sensor of the type, using oscillation of piezoelectric elements, which includes a pair of sensor elements each including a vibratory piezoelectric detecting element and a vibratory piezoelectric drive element joined together by a joint member in longitudinal alignment and oriented substantially at right angles relative to each other, and a resilient joint member joining the pair of sensor elements at respective free ends of the drive elements so as to form, jointly with the sensor elements, a tuning-fork structure. The turning-fork structure has an improved joint structure between each of the driving elements and the resilient joint member, which has a thickness to width ratio of approximately 3:10 to 7:10 to enable the angular rate sensor to have a low resonance impedance and stable performance characteristics.
    • 这种类型的角速率传感器使用压电元件的振荡,其包括一对传感器元件,每个传感器元件包括振动压电检测元件和振动压电驱动元件,该元件通过纵向对准连接在一起并且基本成直角定向 以及在驱动元件的相应自由端处连接一对传感器元件以与传感器元件一起形成音叉结构的弹性联接构件。 转叉结构在每个驱动元件和弹性接头构件之间具有改进的接合结构,其具有大约3:10至7:10的厚度与宽度之比,以使得角速率传感器具有低谐振阻抗 性能稳定。