超声波电动机
压电马达
定子
压电
直线电机
声学
超声波传感器
材料科学
振动
控制理论(社会学)
物理
机械工程
计算机科学
工程类
人工智能
控制(管理)
作者
Zhanmiao Li,Xingyu Yi,Rongqi Zhu,Zhonghui Yu,Xiaoting Yuan,MohammadJavad PourhosseiniAsl,Shuxiang Dong
出处
期刊:Research
[AAAS00]
日期:2023-01-01
卷期号:6
被引量:4
标识
DOI:10.34133/research.0156
摘要
Conventionally, to produce a linear motion, one motor's stator is employed to drive one runner moving forward or backward. So far, there is almost no report of one electromechanical motor or piezoelectric ultrasonic motor that can directly generate two symmetrical linear motions, while this function is desired for precise scissoring and grasping in the minimally invasive surgery field. Herein, we report a brand-new symmetric-actuating linear piezoceramic ultrasonic motor capable of generating symmetrical linear motions of two outputs directly without additional mechanical transmission mechanisms. The key component of the motor is an (2 × 3) arrayed piezoceramic bar stator operating in the coupled resonant mode of the first longitudinal (L1) and third bending (B3) modes, leading to symmetric elliptical vibration trajectories at its two ends. A pair of microsurgical scissors is used as the end-effector, demonstrating a very promising future for high-precision microsurgical operations. The sliders of the prototype show the following features: (a) symmetrical, fast relative moving velocity (~1 m/s) outward or inward simultaneously; (b) high step resolution (40 nm); and (c) high power density (405.4 mW/cm3) and high efficiency (22.1%) that are double those of typical piezoceramic ultrasonic motors, indicating the full capacity of symmetric-actuating linear piezoceramic ultrasonic motor working in symmetric operation principle. This work also has enlightening significance for future symmetric-actuating device designs.
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