通过对行波及声流产生机理的研究,得出微管中的流体产生与行波同方向的声流。利用FPW(flexura lp late w ave)装置进行了跟踪、染色试验,验证了超声行波对微流体驱动的可行性。作为一种新型微流体驱动技术,行波微流体驱动能很好的弥补...通过对行波及声流产生机理的研究,得出微管中的流体产生与行波同方向的声流。利用FPW(flexura lp late w ave)装置进行了跟踪、染色试验,验证了超声行波对微流体驱动的可行性。作为一种新型微流体驱动技术,行波微流体驱动能很好的弥补现有驱动和控制技术的不足。展开更多
A novel traveling wave ultrasonic motor was proposed. The structure of the motor is rather simple and different from the conventional traveling wave ultrasonic motors. Its production processes are very convenient. It ...A novel traveling wave ultrasonic motor was proposed. The structure of the motor is rather simple and different from the conventional traveling wave ultrasonic motors. Its production processes are very convenient. It is composed of a stator constituted with a ring and a bar shaped transducer and two cone shaped rotors. The rotors were pressed on inner surface of the ring by means of a pre-pressure system. The bar shaped transducer has a sand- wich-like configuration,where two sets of piezoelectric element are bolted. One set excites a longitudinal vibration of the bar, and the other set excites a flexural vibration of the bar. The ring＇s traveling wave excited with the longitudinal vibration and the bending vibration of the bar transducer was simulated with FEM （finite element method）. The prototype of the motor was made and investigated experimentally for its performance. Its maximum torque and rotating speed are 0.25 N · m and 50 r/min, respectively.展开更多
基金Funded by the National Natural Sciences Foundation of China (No.10874090)Jiangsu Provincial High-Tech Project of China (No.BG2006005)
文摘A novel traveling wave ultrasonic motor was proposed. The structure of the motor is rather simple and different from the conventional traveling wave ultrasonic motors. Its production processes are very convenient. It is composed of a stator constituted with a ring and a bar shaped transducer and two cone shaped rotors. The rotors were pressed on inner surface of the ring by means of a pre-pressure system. The bar shaped transducer has a sand- wich-like configuration,where two sets of piezoelectric element are bolted. One set excites a longitudinal vibration of the bar, and the other set excites a flexural vibration of the bar. The ring＇s traveling wave excited with the longitudinal vibration and the bending vibration of the bar transducer was simulated with FEM （finite element method）. The prototype of the motor was made and investigated experimentally for its performance. Its maximum torque and rotating speed are 0.25 N · m and 50 r/min, respectively.
