双斜槽式纵扭转换型超声波电机的实验研究

研制了两台双斜槽结构(A型和B型)的纵扭模态转换型超声波电机样机,针对其输出特性进行了对比实验研究。通过激光转速表测量了电机样机的输出转速,分析了工作频率、驱动电压、预压力对电机样机的输出转速的影响。实验结果表明:斜槽结构是影响这种模态转换型超声波电机输出特性的关键因素。在相同谐振频率37.7kHz,工作电压100V和预压力0.21N下,A型双斜槽电机样机的最高转速为87r/min,B型双斜槽电机样机的最高转速为135r/min。

Experimental Study on the Ultrasonic Motor Using a Longitudinal torsional Vibration Converter with Multiple Diagonal Slits

In this paper, the comparative experiments were carried out to investigate the output characteristics of two different ultrasonic motor prototypes (type A and type B) using a longitudinal torsional vibration converter with multiple diagonal slits. The rotational speed was measured by a laser tachometer. The effects of operating frequency, driving voltage and pre pressure on the rotational speed the two prototypes are analyzed. The results indicate that the structure of multiple diagonal slits has obvious influence on the output speed. The maximum revolution speed of the prototype (type A) is 87 r/min and the maximum revolution speed of the prototype (type B) is 135 r/min with the same resonant frequency of 37.7 kHz at the conditions of input voltage of 100 V and rotational speed of 0.21 N.