中空环形行波超声波电机定子振动解析模型

发布时间：2018-06-17 06:30

本文选题：超声波电机 + 定子振动　；参考：《电工技术学报》2015年07期

【摘要】：为分析定转子间的接触对定子振动的影响,建立中空环形行波超声波电机定子振动解析模型。根据电机的结构特点,将定子等效为等厚度的圆环形梁,等效过程中,忽略定子齿的刚度,但将定子齿的质量等效到定子梁中,采用解析法建立等效定子梁的自由振动模型和受迫振动模型,得到定子不同振动模态对应的自由振动频率以及定子在外加激励电压和定转子间法向接触压力作用下的受迫振动响应。结果表明,定子等效处理的方法是合理的,电压激励和法向接触压力激励所产生的定子振幅分别与电压幅值和预压力大小呈正比关系,定转子间所施加的预压力较小,因此接触压力对定子振动的影响较小。将理论分析结果与实验测试结果进行比较,二者基本吻合,验证了所提出的解析模型的正确性。
[Abstract]:In order to analyze the influence of the contact between the rotor on the stator vibration, an analytical model of the stator vibration of a hollow circular traveling wave ultrasonic motor is established. According to the structural characteristics of the motor, the stator is equivalent to a circular ring with equal thickness. The stiffness of the stator tooth is ignored in the equivalent process, but the quality of the stator tooth is equivalent to the stator beam, and the analytical method is used to establish the stator tooth. The free vibration model of the equivalent stator beam and the forced vibration model are used to obtain the free vibration frequency corresponding to the stator vibration modes and the forced vibration response of the stator under the applied excited voltage and the normal contact pressure between the stator and the rotor. The results show that the method of the stator equivalent treatment is reasonable, the voltage excitation and the normal contact pressure. The stator amplitude produced by the excitation is directly proportional to the amplitude of voltage and the size of pre pressure, and the pressure exerted by the stator and rotor is smaller. Therefore, the contact pressure has little effect on the stator vibration. The theoretical analysis results are compared with the experimental results, and the two ones are basically in agreement, and the correctness of the proposed analytical model is verified.
【作者单位】：南京工程学院电力工程学院;东南大学电气工程学院;
【基金】：国家自然科学基金(51177014) 江苏省自然科学基金(BK20140766) 江苏省高校自然科学研究项目(14KJD470004) 南京工程学院校级科研基金(YKJ201317)资助项目
【分类号】：TM303.3

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