Research on an ultrasonic brake

B. Jia, Zhi-jun Sun
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Abstract

A new design of the ultrasonic brake is proposed. The ultrasonic brake takes the advantage of the ultrasonic levitation. First, the structure of the stator of the brake is designed. In the FE analysis, the mode of flexural vibration of the stator is used. The stator is made of stainless steel and fixed by three pins on the outer diameter, so that the stator vibrates more fiercely in the axial direction. Secondly, an experiment on ultrasonic levitation to determine the relationship between static friction torque and voltage and frequency is performed. Then we know that the rotor could rotate overcoming the pre-pressure of 16.7 N when the voltage is 100 Vp-p, and frequency is 23.5 KHz. Finally, a method of assembling is proposed so that make diameter is smaller and can adjust the pre-pressure. So, the brake has a 45 mm diameter and 12 mm in thickness. The brake overcomes the disadvantage of ordinary brakes, such as over size, high lubrication, and so on.
超声波制动器的研究
提出了一种新的超声波制动器设计方案。超声波制动器利用了超声波悬浮的优势。首先,对制动器定子的结构进行了设计。在有限元分析中,采用了定子的弯曲振动模态。定子采用不锈钢制造,外径上用三脚固定,使定子轴向振动更剧烈。其次,进行超声悬浮实验,确定静摩擦力矩与电压、频率的关系。然后我们知道,当电压为100 Vp-p,频率为23.5 KHz时,转子可以克服16.7 N的预压进行旋转。最后,提出了一种装配方法,使其直径更小,并可调节预压。因此,制动器的直径为45毫米,厚度为12毫米。该制动器克服了普通制动器尺寸过大、润滑性高等缺点。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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