纵扭复合型超声波电动机的噪声实验研究  

Study on the Noise of the Longitudinal-torsional Ultrasonic Motor

作　　者：龚书娟[1] 郭吉丰[2] 

机构地区：[1]衡水学院,河北衡水053000 [2]浙江大学,浙江杭州310027

出　　处：《微特电机》2006年第6期18-20,共3页Small & Special Electrical Machines

基　　金：国家863项目(863-2-2-4-6A);浙江省重点科技计划项目(2004C21917);浙江省教育厅重点项目(20030372)

摘　　要：利用声级计、动态信号分析仪等对电机的噪声进行分析,通过对不同预压力和不同激励频率下电机噪声的分析比较,并结合定、转子振型的有限元计算结果,发现纵扭复合型超声波电动机的噪声分为两类:一是由系统运动的非线性产生的分数次谐波诱发的噪声;二是由摩擦激发的转子的低阶振动噪声。该研究为降低噪声及电机结构的进一步改进提供了依据。In this paper the noise is analyzed by use of noise analyzer and dynamic signal analyzer. According to the noise under different preload and different excited frequency as well as the finite element analysis of the stator and rotor,it is concluded that there are two kinds of noise ： First, nonlinearity of the system induces the fractional harmonic which roots in the noise; Second, the low - frequency - vibration noise of the rotor excited by friction. The study can be useful for reducing the noise and remodeling the structure of the motor.

关 键 词：超声波电动机 噪声 分数次谐波 有限元 

分 类 号：TM38[电气工程—电机]