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中文摘要：
设计了一种单边双足驱动的面内振动直线超声波电动机，其定子采用了一片铜板和八片压电陶瓷构成的复合结构，压电点陶瓷沿着厚度方向极化，对称安装在矩形铜板的两个表面上。建立了该电机的机电耦合动力学模型，通过仿真确定了驱动足的位置，并试验研究了电机的特性。
英文摘要：
A new type linear USM with double - driving feet has been developed. The stator consists of eight piezoelectric ceramic plates and one brass plate. Piezoelectric ceramics plates are polarized along the thickness and are symmetrically bonded to the two surfaces of one rectangle brass plate. Double - driving feet are assembled on the same side of the brass plate. The working vibration mode is a composite in - plane bimode, which consists of the first longitudinal in - plane vibration mode and the second bending one. The basic size of the linear USM is determined carefully by FEA. The characteristics of the prototype motor were measured experimentally.
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