| 摘要 |
The proposed piezoelectric mechanical-electric transducer contains a piezoelectric element shaped as a parallelepiped with four pairs of electrodes, a matching voltage amplifier, and a matching charge amplifier. Three pairs of the electrodes are arranged at the sides of the piezoelectric element that are perpendicular to the polarization vector. The fourth pair of the electrodes is arranged at the sides of the piezoelectric element that are parallel to the polarization vector. The first electrode that is arranged at one of the sides of the piezoelectric element that are parallel to the polarization vector is connected to the input of the voltage amplifier. The electrode that is arranged at the opposite side and constitutes the projection of the first electrode is connected to the common point of the transducer circuit. The second, third, and fourth electrodes that are arranged at one of the sides of the piezoelectric element that are perpendicular to the polarization vector are accordingly connected to the output of the voltage amplifier, input of the charge amplifier, and the outputof the charge amplifier. The electrode that is arranged at the opposite side and constitutes the projection of the second electrode is connected to the common point of the transducer circuit. The force applied to the piezoelectric element is parallel to the polarization vector.
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