Back
 OJA  Vol.5 No.2 , June 2015
A Study on the Mode Shape Piezoelectric Motor
Jwo Ming Jou
Show more
Abstract: In this paper, we try to use the coating of effective electrode surface and change the direction of polarization to design the mode shape piezoelectric motors of the first three modes. We also com-pare the gain of the mode shape piezoelectric motors with respect to the normal shape piezoelectric motor, including rotational speed, loading ability, torque, phase angle conversion and efficiency. According to the results of theoretical and simulation analysis, we have found that the gain of the mode shape piezoelectric stators are larger than the normal shape piezoelectric stator on average. According to the results of experiments, we found that the gain of the rotational speed, loading ability, torque, driving phase angle conversion and efficiency of the mode shape (MS1 - 3) piezoelectric motors are higher than the normal shape piezoelectric motor (NS) under driving condition of the second vibration mode. Also, the gain of the rotational speed and loading ability of the mode shape 2 (MS2) piezoelectric motor are higher than other shapes piezoelectric motors (NS, MS1 and MS3) under driving condition of the second vibration mode. The used maximum rotational speed of the mode shape 2 (MS2) piezoelectric motor is up to 946 rpm under conditions of 180 Vp-p driving voltage, 10.7 kHz driving frequency, 0o driving phase angle and 13.0 gw net weight. The maximum loading ability and torque of the mode shape 2 (MS2) piezoelectric motor is respectively 451 gw and 0.91 mkgw-m under conditions of 180 Vp-p driving voltage, 10.7 kHz driving frequency, 0o driving phase angle and 173 rpm rotational speed. And the gain of efficiency (output power) and maximum loading ability (torque) of the mode shape 2 (MS2) piezoelectric motor are respectively 2.28 and 1.54 with respect to the normal shape piezoelectric motor under conditions of 180 Vp-p driving voltage, 10.7 kHz driving frequency and 0o driving phase angle. According to the results of the experiments, we have finally found that the piezoelectric motors (NS and MS1 - 3) can be driven only by the second vibration mode because the stator can produce elliptical motion and allows the rotor to generate orientation rotation. However, the first vibration mode can allow the rotor to be rotated very fast but it can’t make the rotation of the rotor orientation. Furthermore, we also found that the rotor can’t rotate by the third vibration mode because its vibration energy is absorbed by the structure itself, so causing the rotor stagnation.
Keywords: Mode Shape (MS), Normal Shape (NS), Piezoelectric Motor, Piezoelectric Stator, Gain
Cite this paper: Jou, J. (2015) A Study on the Mode Shape Piezoelectric Motor. Open Journal of Acoustics, 5, 46-65. doi: 10.4236/oja.2015.52005.
References

[1]   Koc, B., Cagatay, S. and Uchino, K. (2002) A Piezoelectric Motor Using Two Orthogonal Bending Modes of a Hollow Cylinder. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 49, 495-500.
http://dx.doi.org/10.1109/58.996568

[2]   Cagatay, S., Koc, B. and Uchino, K. (2003) A 1.6-mm, Metal Tube Ultrasonic Motor. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 50, 782-786.
http://dx.doi.org/10.1109/TUFFC.2003.1214498

[3]   Kanda, T., Makino, A., Suzumori, K., Morita, T. and Kurosawa, M.K. (2004) A Cylindrical Micro Ultrasonic Motor Using a Micro-Machined Bulk Piezoelectric Transducer. IEEE Ultrasonics Symposium, 2, 1298-1301.
http://dx.doi.org/10.1109/ULTSYM.2004.1418028

[4]   Kanda, T., Oomori, Y., Makino, A., Suzumori, K. and Kobayashi, A. (2005) Design and Testing of Rotors for a Cylindrical Micro-Machined Micro Ultrasonic Motor. IEEE Ultrasonics Symposium, 1, 301-304.
http://dx.doi.org/10.1109/ULTSYM.2005.1602855

[5]   Zhu, H. and Zhao, C.S. (2006) Dynamic and Kinetic Analyses of the Stator of a Cylindrical Ultrasonic Motor. Proceedings of the 2006 IEEE International Conference on Robotics and Biomimetics, Kunming, 17-20 December 2006, 1346-1350.
http://dx.doi.org/10.1109/ROBIO.2006.340124

[6]   Kobayashi, A. and Kanda, T. (2007) Driving Performance of a Cylindrical Micro Ultrasonic Motor. Proceedings of the 2007 IEEE/RSJ International Conference on Intelligent Robots and Systems, San Diego, 29 October-2 November 2007, 3809-3814.
http://dx.doi.org/10.1109/IROS.2007.4399205

[7]   Jou, J.M. (2009) A Study on the Metal Tube Type Ultrasonic Motor (MTTUSM). Proceedings of the European Frequency and Time Forum International Frequency Control Symposium, 609-612.

[8]   He, S.Y., Chiarot, P.R. and Park, S. (2011) A Single Vibration Mode Tubular Piezoelectric Ultrasonic Motor. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 58, 1049-1061.
http://dx.doi.org/10.1109/TUFFC.2011.1905

[9]   Cheng, T.-H., Guo, X.-D., Bao, G., Gao, H. and Xiao, C.F. (2012) Analysis and Development of Plate-Attached Cylindrical Rotary-Linear Ultrasonic Motor. Proceedings of the 2012 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA), Shanghai, 23-25 November 2012, 270-273.
http://dx.doi.org/10.1109/SPAWDA.2012.6464086

[10]   Guo, M.S., Hu, J.H., Zhu, H., Zhao, C.S. and Dong, S.X. (2013) Three-Degree-of-Freedom Ultrasonic Motor Using a 5-mm-Diameter Piezoelectric Ceramic Tube. Ultrasonics, Ferroelectrics and Frequency Control, IEEE Journals & Magazines, 60, 1446-1452.
http://dx.doi.org/10.1109/TUFFC.2013.2716

[11]   Jou, J.-M. (2014) Theory and Simulation Analysis of the Mode Shape and Normal Shape Actuators and Sensors. Open Journal of Acoustics, 4, 184-203.
http://dx.doi.org/10.4236/oja.2014.44019

 
 
Top