专利名称：PIEZOELECTRIC ACTUATOR FOR ANrefer
policestationULTRASONIC MOTOR
发明人：WISCHNEWSKIJ, WLADIMIR,WISCHNEWSKIJ, ALEXEJ
申请号：EP2006064832汽车踏板
lovato申请日：20060731
公开号：WO2007020177A3
公开日：kaki
聚苯乙烯
alice歌词
20070809
汤唯 英文专利内容由知识产权出版社提供
摘要：The invention relates to a piezoelectric actuator, particularly for an ultrasonic motor, comprising an acoustic oscillation resonator, in which the acoustic oscillation resonator has, in esnce, the shape of a rectangular piezoelectric plate with two main, two lateral and two front surfaces and has a multilayer structure inside that depicts a layer of excitation electrodes, which alternate with the layers of the shared electrodes and with the layers of polarized ceramic located therebetween. The polarization vector runs perpendicular to the surface of the electrodes, and all excitation electrodes are divided into two groups, which are not connected to one another and which are arranged symmetrically to symmetry surface of said plate. This symmetry surface runs perpendicular to the main and lateral surfaces of the plate and, to be preci, through the middle, and each group of the excitation electrodes, together with the shared electrodes and the piezo ceramic therebetween, form a multilayer generator, which is asymmetrically arranged with regard to the symmetry surface of the piezoelectric plate, for an acoustic wave.
transform申请人：PHYSIK INSTRUMENTE (PI) GMBH & CO. KG,WISCHNEWSKIJ,
WLADIMIR,WISCHNEWSKIJ, ALEXEJ 更多信息请下载全文后查看
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