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SURFACE ACOUSTIC WAVE GYRO SENSORS FOR AUTOMOTIVE APPLICATIONS

机译:用于汽车应用的表面声波陀螺仪传感器

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摘要

Low-cost and compact gyro sensors are required for automative applications. A novel principle for the detection of angular velocities exploits surface acoustic waves (SAWs). SAWs are electrically excited waves which propagate along the surface of piezoelectric solids. Owing to the fact that the propagation parameters vary greatly according to external factors, SAWs are very well suited for applications as sensors. The sensor described here determines the angular velocity from the acting Coriolis force which causes a change in the frequency of the SAW.
机译:自动化应用需要低成本和紧凑的陀螺仪传感器。检测角速度的新原理利用了表面声波(SAW)。声表面波是沿压电固体表面传播的电激发波。由于传播参数会根据外部因素而变化很大,因此SAW非常适合用作传感器。此处描述的传感器根据作用于科氏力的角速度确定角速度,该角速度会引起声表面波频率的变化。

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