A slender non resonant piezoelectric linear motor based on bridge amplification mechanism is designed. The size of the motor is 29 mm × 5 mm × 3.5 mm. The working principle of the motor is discussed, and the physical model is established. Based on the energy conservation principle, the mathematical model of the amplification factor of the displacement amplification mechanism is deduced. The correctness of the mathematical model is verified by simulation and experiment. According to the mathematical model, various structural parameters affecting the mechanical properties of the motor are obtained, and then the structural parameters are optimized. Finally, the optimized prototype is developed, and the mechanical properties of the prototype before and after optimization are compared. The test results show that when the phase difference between the two driving signals is 90 °, the output driving force of the motor reaches the maximum. When the peak driving voltage is 140V, the bias voltage is 70V and the holding force is 2.2 N, the maximum no-load speed of the optimized motor increases linearly from 6.69 mm/s to 7.67 mm/s, and the speed load characteristics are significantly improved. The results show that the key structural parameters affecting the motor performance can be effectively analyzed by establishing the correct mathematical model, and the mechanical properties of the improved motor are significantly improved.
Key words
slender /
non resonance /
piezoelectric motor /
optimization design
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
[1] W.S. Chen, Y.X. Liu, J.K. Liu, S.J. Shi, A linear ultrasonic motor using bending vibration transducer with double driving feet, Ferroelectrics. 1 (2010) 221-230.
[2] X.L. Lu, J.H. Hu, Q. Zhang, L. Yang, C.S. Zhao, P. Vasiljev, An ultrasonic driving principle using friction reduction, Sensors and Actuators A: Physical， 2013，199： 187-193.
[3] X.L. Lu, S.Q. Zhou, C.S. Zhao, Finite element method analyses of ambient temperature effects on characteristics of piezoelectric motors, J. Intel. Mat.Syst. Str. 3 (2014) 364-377.
[4] 靳宏，金龙，徐志科，等．压电叠堆位移放大致动器的动态特性[J]. 振动与冲击，2012，31(21):146-150.
Jin Hong, Jin Long, Xu Zhike, et al. Dynamic characteristics of a piezoectric-stack displacement-amplifying actuator [J].Journal of Vibration and Shock,2012,31(21):146-150.(in Chinese)
[5] PARK, J H， BAEK J B， CHO B H，et al. Performance evaluation of switching amplifier in micro-positioning systems with piezoelectric actuator[J]. The Transactions of the Korean Institute of Power Electronics ，2009，14（1 ）：62-71.
[6] H. Huang, H.W. Zhao, Z.Q. Fan, H. Zhang, Z.C. Ma, Z.J. Yang, Analysis and experiments of a novel and compact 3-DOF precision positioning platform [J].Journal of Mechanical Science and Technology ，2013，27： 3347-3356.
[7] L. Yung-Tien, T. Higuchi, Precision positioning device utilizing impact force of combined piezo-pneumatic actuator[J].IEEE/ASME Transactions on Mechatronics， 2001，6（4）：467-473.
[8] S.K. Nah, Z.W. Zhong, A microgripper using piezoelectric actuation for micro-object manipulation[J].Sensors and Actuators A: Physical ， 2007，133（1）:218-224.
[9] 张 露，李朝东．背衬封装对卧板式直线超声电机输出推力影响[J]. 振动与冲击，2013，32(11):137-140.
Zhang Lu, LI Chao-dong, Effect of back packaging on output thrust of a board-type horizontal linear ultrasonic Motor[J].Journal of Vibration and Shock,2013,32(11):137-140.
[10] 陈西府，王寅，黄卫清，等．一种非共振式压电叠堆直线电机的机理与设计[J]. 中国电机工程学报，2011，31（15）：82-87.
CHEN Xifu, WANG Yin, HUANG Weiqing ,et al. Mechanism and design of linear motor with piezoelec-tric stacks basing on non-resonant vibration [J]. Proceesings of the CSEE, 2011, 31(15):82-87.
[11] 李明，陈西府，卢倩，等．一种直线压电电机驱动足的结构优化设计[J]. 压电与声光，2018，40（6）：916-921.
LI Ming, CHEN Xifu, LU Qian,,et al,.Structure Optimization Design of Linear Piezoelectric Motor Drive-foot [J]. Piezoelectrics ＆Acoustooptics, 2018, 40(6): 916-921.
[12] 官长斌, 陈 君，汪旭东，等．基于系统相似方法的叠堆型压电驱动器非线性动力学建模及实验研究[J]. 振动与冲击，2015，34(9):15-20.
GUAN Chang-bin, CHEN Jun, WANG Xu-dong, et al, Nonlinear dynamic modeling and experiment of stack-type piezoelectric actuator based on system similarity Method[J]．Journal of Vibration and Shock, 2015, 34(9):15-20.
[13] X.F. Chen, Y. Wang, M.X. Sun, W.Q. Huang, Linear Piezoelectric Stepping Motor with Broad Operating Frequency, Transactions of Nanjing University of Aeronautics and Astronautics.(2015) 137-142.
[14] Bing Zhang, C.D. Li, Design and experiment of a slender nonresonant linear piezoelectric motor based on bridge-type amplification mechanism, AIP Advances.(2019) 9, 095026-1-8.
{{custom_fnGroup.title_en}}
Footnotes
{{custom_fn.content}}
PDF(1573 KB)
