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    • 8. 发明申请
    • Method for Tuning a Resonant Frequency of a Piezoelectric Component
    • 调谐压电元件谐振频率的方法
    • US20110169374A1
    • 2011-07-14
    • US12970633
    • 2010-12-16
    • Guenter EngelMichael HuainigMarkus PuffThomas Wippel
    • Guenter EngelMichael HuainigMarkus PuffThomas Wippel
    • H01L41/107
    • H01L41/083H01L41/0471H01L41/0926H02N2/0015H02N2/008H03H9/17H03H2009/02196
    • A method for tuning a resonant frequency of a piezoelectric component is disclosed. The piezoelectric component includes a transducer extending in three spatial directions. The resonant frequency depends on an extension in at least one of the spatial directions and/or on a material-dependent elasticity modulus. The transducer includes a layered structure with at least two first electrodes and at least one second electrode, which is disposed between the two first electrodes. In the method, a DC voltage is applied to at least one of the at least two first electrodes and the at least one second electrode, so that a change of the resonant frequency results due to a change to the extension in the one spatial direction and the elasticity modulus. A control voltage with an excitation frequency is applied, the excitation frequency substantially corresponding to the modified resonant frequency. This generates a vibration of the piezoelectric component.
    • 公开了一种用于调谐压电元件的谐振频率的方法。 压电元件包括​​在三个空间方向上延伸的换能器。 谐振频率取决于空间方向中的至少一个和/或材料依赖弹性模量上的延伸。 换能器包括具有至少两个第一电极和至少一个第二电极的分层结构,其设置在两个第一电极之间。 在该方法中,DC电压被施加到至少两个第一电极和至少一个第二电极中的至少一个,使得谐振频率的变化是由于一个空间方向上的延伸的变化而导致的,并且 弹性模量。 施加具有激励频率的控制电压,激励频率基本上对应于修改的谐振频率。 这产生压电元件的振动。
    • 10. 发明授权
    • Piezoelectric component
    • 压电元件
    • US08072119B2
    • 2011-12-06
    • US12508285
    • 2009-07-23
    • Guenter Engel
    • Guenter Engel
    • H01L41/047
    • H04R17/00H01L41/083H01L41/0973H04R17/02
    • A piezoelectric component with a body in which electrically connected transducer elements are realized is disclosed. The transducer elements are separated from each other by an essentially field-free neutral region of the body. A first transducer element has electrically connected first electrodes, and a second transducer element has electrically connected second electrodes. In addition, at least one third electrode, which is arranged in the first and second transducer element is provided. At least three of the first and third electrodes are arranged in an alternating sequence. At least three of the second and third electrodes are arranged in an alternating sequence. The neutral area is perpendicular to the planes in which the electrodes are arranged.
    • 公开了具有实现电连接的换能器元件的主体的压电元件。 换能器元件通过身体的基本无场的中性区域彼此分离。 第一换能器元件具有电连接的第一电极,并且第二换能器元件具有电连接的第二电极。 此外,设置有布置在第一和第二换能器元件中的至少一个第三电极。 第一和第三电极中的至少三个以交替的顺序排列。 第二和第三电极中的至少三个以交替的顺序排列。 中性区域垂直于布置电极的平面。