交叉组合激励模式压电管式超声电机  

A Piezoelectric Tube Ultrasonic Motor with Crossed Exciting Mode

作　　者：曲建俊[1] 程廷海[1] 张巍[1] 周宁宁[1] 

机构地区：[1]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001

出　　处：《压电与声光》2009年第3期354-356,共3页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(50575055)

摘　　要：提出一种将定子分为8个激振区、用于实现激励2阶弯振的交叉组合激励模式,研制出2台定子外径10 mm、内径8 mm、长35 mm结构相同但激励模式不同的压电管式超声电机。一台定子均分为4个激振区,利用1阶弯曲振动模态,采用传统4区激励模式;另一台定子均分为8个激振区,利用2阶弯曲振动模态,采用交叉组合激励模式。测试结果表明,在预压力为1.0 N,激励电压峰峰值为210 V时,采用交叉组合激励模式的样机的堵转转矩为2.45 N.mm、空载转速为206 r/min,与传统4区激励模式相比分别提高了17%和23%。A novel method of stator divided into 8 exciting areas was proposed, and the second bending mode was implemented. Two piezoelectric tube ultrasonic motors were developed. Stators were in the same size of 10 mm in outside diameter, 8 mm in inside diameter and 35 mm in length, but under different exciting methods. One stator was divided into 4 exciting areas, and the first bending mode was adopted. The other was divided into 8 exciting areas. A novel crossed exciting method was put forward, and the second bending mode of the stator was excited. When the pre-load was 1.0 N and peak-peak value of exciting voltage was 210 V. The experimental results showed that the stalling torque of the prototype with crossed exciting mode was 2.45 N · mm and the maximum angular speed was 206 r/min , which increased by 17% and 23% respectively comparing with the conventional type prototype.

关 键 词：超声电机 压电管 激励模式 

分 类 号：TM356[电气工程—电机]