本文提出一种新型贴片式纵扭压电电机，包含定子，转子和预压力系统等。电机定子经过特殊的开槽处理形成多振子结构，振子由金属基体和粘贴在其外表面的压电陶瓷构成，益于简化电机结构。通过合理的参数调整，使定子的一阶纵振模态和二阶扭转模态频率尽可能相同，并且振子均工作在共振状态，提高了电机效率。为评估设计电机的整体性能，建立了定子和转子的有限元接触模型，并对电机的接触特性进行分析研究。通过接触静态和瞬态求解，得到空载情况下接触区的压力分布、接触状态及滑动距离等参数，同时得到电机的转速变化曲线和输出性能等。分析结果表明该纵扭电机为多面接触，接触压力不存在局部高度集中的情况，且接触区域存在滑动。最后，根据设计的电机参数，加工原理样机，对理论分析进行实验验证。
Abstract
A novel bonded type longitudinal-torsional piezoelectric motor was presented, including the stator, the rotor, the preloading system, etc. The stator was particularly slotted to form a structure with multi vibrators. The vibrator was constituted by the metal substrate and piezoelectric ceramics, which were pasted on the outer surface of the metal substrate. It was useful to simplify the motor structure. Through reasonable adjustment of the designed parameters, the resonant frequencies of the first longitudinal vibration model and the second torsional vibration model of the stator were adjusted as close as possible. Meanwhile, all the vibrators were under the resonance state, which is beneficial to improve the efficiency of the motor. To evaluate the overall performances of the designed motor, the finite element contact model was established to research the contact characteristics of the stator and the rotor. Through the analysis and solving of the static and transient contact process, pressure distribution of the contact areas, contact state, sliding distance, and etc. were all obtained under the condition of no-load. Besides, the speed curve and the output performance of the motor were both acquired. The results of contact analysis show that this USM is multi-surface contact mode actually. Analysis results also show that the contact pressure is not local concentration and sliding happens at the contact areas. Finally, according to the designed parameters, a prototype motor was fabricated and then the theoretical analysis was verified by experiments.
关键词
压电电机 /
有限元 /
接触模型 /
多面接触
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Key words
piezoelectric motor /
finite element /
contact model /
multi-surface contact
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参考文献
[1] 甘云华，金龙，王心坚，等．超声波电机自激振荡驱动电路的变频控制特性[J]．中国电机工程学报，2008, 28(9): 93-97.
GAN Yun-hua, JIN Long, WANG Xin-jian, et al. Characteristic of variable frequency control of self-oscillating driving circuit for ultrasonic motor [J]. Proceedings of the CSEE, 2008, 28(9): 93-97.
[2] 金龙，褚国伟，胡敏强，等．超声波电机速度与定位控制系统[J]．中国电机工程学报，2005, 25(1) :131-136．
JIN Long, CHU Guo-wei, HU Min-qiang, et al. The speed and position control system of ultrasonic motor [J]. Proceedings of the CSEE, 2005, 25(1) :131-136.
[3] 蒋春容，胡敏强，金龙，等. 行波型超声波电机定子和转子接触粘滑分布特性[J]. 电工技术学报，2010, 25(12): 48-53.
JIANG Chun-rong, HU Min-qiang, JIN Long, et al. Stick-slip distribution of contact area between stator and rotor in traveling wave ultrasonic motor [J]. Transactions of China Electrotechnical Society, 2010, 25(12): 48-53.
[4] 赵淳生. 超声电机技术与应用[M]. 北京：科学出版社，2007.
[5] 杨淋. 纵扭复合型超声电机的研究[D]. 南京：南京航空航天大学，2010.
[6] 龚书娟. 纵扭复合型超声波电机的若干问题研究[D]. 杭州：浙江大学，2005.
[7] 郭吉丰，魏燕定，刘晓，等. 纵扭复合型超声波电机的力传递模型[J]. 中国电机工程学报，2003, 23(5): 80-85.
GUO Ji-feng, WEI Yan-ding, LIU Xiao, et al. Force transferring model of hybrid transducer type ultrasonic Motor [J]. Proceedings of the CSEE, 2003, 23(5): 80-85.
[8] 刘锦波，陈永校. 超声波的定转子接触的摩擦传动模型及实验研究[J]. 中国电机工程学报，2000, 20(4): 59-63.
LIU Jin-bo, CHEN Yong-xiao. Investigation on contact model of Ultrasonic motor and its experiments [J]. Proceedings of the CSEE, 2000, 20(4): 59-63.
[9] 王剑. 柱状超声波电机的设计理论及控制[D]. 杭州：浙江大学，2009.
[10] Maeno T, Tsukimoto T, Miyake A. Finite element analysis of the rotor/stator contact in a ring type ultrasonic motor [J]. IEEE Transactions on Ultrasonics, Ferroelectrics, 1992, 39(6):668-674.
[11] Maeno T, Bogy D B. FE analysis and LDA measurement of the dynamic rotor/stator contact in a ring type ultrasonic motor [J]. Journal of Tribology, 1993, 115(4): 625-631.
[12] 曲建俊，周铁英，姜开利，等. 行波超声马达定子和转子接触状态实验研究[J]. 声学学报，2003, 28(3): 217-222.
QU Jian-Jun, ZHOU Tie-Ying, JIANG Kai-li, et al. Experimental study of contact state between stator and rotor in a travelling wave ultrasonic motor [J]. ACTA ACUSTICA, 2003, 28(3): 217-222.
[13] 蒋春容，胡敏强，金龙，等. 中空环形行波超声波电机有限元接触模型[J]. 东南大学学报：自然科学版，2014, 44(1): 99-103.
JIANG Chun-rong, HU Min-qiang, JIN Long, et al. Finite element contact model of a hollow ring type travelling wave ultrasonic motor [J]. Journal of southeast university: Natural Science Edition, 2014, 44(1): 99-103.
[14] Bekiroglu E. Ultrasonic motors: Their models, drives, controls and applications[J]. Journal of Electroceramics, 2008, 20(3-4): 277-286.
[15] CHEN Chao, SHE Chong-min. Creep effect analysis at the friction interface of a rotary ultrasonic motor[J]. International Journal of Applied Mechanics, 2015, 7(2): 1550031 (20 pp.).
[16] Ro J S, Jung S Y, Lee C G, et al. Survey of a contact model and characteristic analysis method for a travelling wave ultrasonic motor[J]. International Journal of Applied Electromagnetics and Mechanics, 2014, 46(3): 437-453.
[17] 赵淳生，黄卫清. 超声电机的试验研究[J]. 微电机：伺服技术，2003, 36(2): 1-5.
ZHAO Chun-sheng, HUANG Wei-qing. Test Research on Ultrasonic Motors[J]. Micromotor: servo technology, 2003, 36(2): 1-5.
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