Mechanical modeling of a longitudinally vibration ultrasonic motor
-
摘要: 提出并建立了一个纵向振动超声马达的力学模型。阐述了超声马达的工作机理,对定子和转子在间断接触时的粘连和滑动做了理论分析,给出了马达的驱动力随时间连续变化的解析表达式。对超声马达的速度、输入输出能量和效率等进行了分析,特别讨论了驱动频率、初始压力、转子的转动惯量和外加力矩对马达特性的影响。数值结果表明,按照本文模型得到的结论与模拟结果和实验结果相吻合。这些结论与结果为超声马达的构造、设计和控制等提供了可资参考的理论依据。Abstract: A mechanical model of a longitudinally vibration ultrasonic motor is proposed. The working principle of the ultrasonic motor is expounded. The sticking and slipping between the stator and rotor in the intermittent contact region are analysed theoretically. The analytical expression of the motor's driving force that undergoes continuous changes is given. The characteristics of the ultrasonic motor, including the rotating speed of the rotor, the input energy, the output energy and the efficiency of the motor are discussed. The effect of the initial compressive force, driving frequency, load, and the moment of the inertia of the motor is examined. The numerical results obtained from this model coincide with those obtained from existing experiments. These results and conclusions provide reliable theoretical basis for the design, construct and control of ultrasonic motors.
-
计量
- 文章访问数: 31
- HTML全文浏览量: 2
- PDF下载量: 4
下载:
