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公开(公告)号:US5166907A
公开(公告)日:1992-11-24
申请号:US720092
申请日:1991-06-24
CPC分类号: B06B1/0614 , H04R17/08
摘要: A solid-state tunable transducer has been developed by incorporating an elastically nonlinear material, silicone rubber, into an electroacoustic transducer made from piezoelectric ceramics. The resonant frequency and mechanical Q of the transducer are tuned mechanically by applying a uniaxial compressive stress to the composite. The resonant frequency is tuned electrically by placing a piezoelectric actuator into the composite and varying the magnitude of the d.c. bias.
摘要翻译: 通过将弹性非线性材料硅橡胶结合到由压电陶瓷制成的电声换能器中,开发了固态可调谐传感器。 传感器的谐振频率和机械Q通过对复合材料施加单轴压应力机械地调谐。 谐振频率通过将压电致动器放置在复合材料中并且改变直流电的大小来进行电调谐。 偏压。