发明名称 |
Frequency agile sonic transducer |
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.
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申请公布号 |
US5166907(A) |
申请公布日期 |
1992.11.24 |
申请号 |
US19910720092 |
申请日期 |
1991.06.24 |
申请人 |
THE PENNSYLVANIA RESEARCH CORPORATION |
发明人 |
NEWNHAM, ROBERT E.;XU, QI C.;BLASZKIEWICZ, MICHAEL |
分类号 |
B06B1/06;H04R17/08 |
主分类号 |
B06B1/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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