摘要
研制了一种新结构、大力矩行波型的超声电机。该超声电机中,压电片被粘接到金属体上构成振动体,作为转子,并与外壳接触。电机的外壳兼作定子。通过转子、定子之间的摩擦力驱动转子转动。这种电机结构除减少了单独的转子部件外,还提高了超声电机的力矩输出性能。利用有限元方法对电机的转子进行优化设计,计算了直径100mm的行波超声电机的转子的模态。根据设计制作出样机。并对样机性能进行了测试,堵转力矩超过了4N.m。该电机具有重要的应用前景。
A traveling ultrasonic motor with large torque was developed with the rotor heing the motor vibrator which consists of a toothed metal ring with a bonded piezoelectric ceramic. The housing serves as the stator that was in contact with the rotor driven by the friction between the rotor and the stator. This configuration not only simplifies the motor, but also increases the motor output. The motor design was optimized using a finite element analysis to compute the rotor vibration modes for a 100 mm diameter rotor. A prototype has a stall torque of over 4 N · m.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第3期396-398,共3页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金资助项目(50235010)
关键词
行波超声电机
大力矩
优化设计
traveling ultrasonic motor
large torque
optimizing design
