Hostname: page-component-78c5997874-s2hrs Total loading time: 0 Render date: 2024-11-17T04:21:13.223Z Has data issue: false hasContentIssue false
  • English
  • Français

Theoretical Estimation and Modeling for Constraint-Tuning Ultrasonic Actuator

Published online by Cambridge University Press:  22 March 2012

M.-H. Lai ,
M. S. Ouyang  and
F.-L. Wen
M.-H. Lai
Affiliation:
Department of Engineering and System Science, National Tsing Hua University, Hsinchu, Taiwan 30043, R.O.C.
M. S. Ouyang
Affiliation:
Department of Engineering and System Science, National Tsing Hua University, Hsinchu, Taiwan 30043, R.O.C.
F.-L. Wen*
Affiliation:
Department of Mechanical Engineering, University of New Mexico, Albuquerque, NM 87131, U.S.A. Department of Mechanical and Computer-Aided Engineering, St. John's University / Taipei Campus, Tamsui, New Taipei City, Taiwan 25135, R.O.C.
*
*Corresponding author ([email protected])
Get access

Abstract

Using a piezoelectric unimorph vibrator with constraint-tuning modified-mode (CTMM) mechanism, a novel design of a thin-disc ultrasonic actuator was developed to drive an optical sled. The theoretical estimation of in-plane wave propagation on a thin disc is introduced to explain the novel actuating mechanism, via a modal expansion technique and modal participation factors. Furthermore, the approximate wave propagations could be illustrated by the practical estimated wave equations in this study. Applying four screws at the exact distribution of angles on the thin-disc vibrator, the actuating mechanism of ultrasonic modified modes is generated and propagated. The in-plane vibration modes could be tuned by these desired screw constraints on the piezoelectric vibrator. The ultrasonic actuator offers the output force to drive an optical sled by friction contact in bilateral motions. To implement the equilibrium structure force in bilateral directions, natural and forced analysis as well as impedance comparison of FEM software ANSYS are also introduced into the constrained design. Hence, there are two various modified modes chosen at the different resonant frequencies within the electromechanical coupling of piezoelectric material to pursue more efficiency in energy conversion. Experimental results have demonstrated consistency with the approximate theoretical approach of the in-plane wave propagation and simulations based on the concept of constrained-tuning modified modes.

Keywords

Ultrasonic actuatorWave propagationConstraint tuningImpedance analysis
Type
Articles
Information
Journal of Mechanics , Volume 28 , Issue 1 , March 2012 , pp. 7 - 18
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2012

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Ueha, S., Tomikawa, Y., Kurosawa, M. and Nakamura, N., Ultrasonic Motors Theory and Applications, Clarendon Press, Oxford (1993).Google Scholar
2. Sashidam, T. and Kenjo, T., An Introduction to Ultrasonic Motors, Clarendon Press, Oxford (1993).CrossRefGoogle Scholar
3. Uchino, K., “Piezoelectric Ultrasonic Motors: Overview,” Smart Materials and Structures, 7, pp. 273–285 (1998).Google Scholar
4. Lamberti, N., Iula, A. and Pappalardo, M., “A Piezoelectric Motor using Flexural Vibration of a Thin Piezoelectric Membrane,” IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 45, pp. 23–29 (1998).CrossRefGoogle ScholarPubMed
5. Carotenuto, R., Lamberti, N., Iula, A. and Pappalardo, M., “A New Low Voltage Piezoelectric Micromotor based on Stator Precessional Motion,” IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 45, pp. 1427–1434 (1998).Google Scholar
6. Takano, T., Enoki, Y., Kitashima, S. and Tomikawa, Y., “Small-sized Ultrasonic Linear Motor using Radial and Nonaxisymmetric Vibration Modes of an Annular Plate,” Proceeding of IEEE Ultrasonics Symposium, pp. 675–678 (1998).Google Scholar
7. Wen, F. L., Yen, C. Y. and Ouyang, M. S., “Thin-disk Piezoceramic Ultrasonic Motor. Part I: Design and Performance Evaluation,” Ultrasonics, 41, pp. 437–450 (2003).Google Scholar
8. Wen, F. L. and Yen, C. Y., “Design and Dynamic Evaluation for a Linear Ultrasonic Stage Using the Thin-disc Structure Actuator,” Ultrasonics, 47, pp. 23–31 (2007).Google Scholar
9. Chang, K. T. and Ouyang, M. S., “Rotary Ultrasonic Motor Driven by a Disk-shaped Ultrasonic Actuator,” IEEE Transactions on Industrial Electronic, 53, pp. 831–837 (2006).CrossRefGoogle Scholar
10. Wen, F. L., Mou, S. C. and Ouyang, M. S., “Design and Construction of a Shaft-driving Type Piezoceramic Ultrasonic Motor,” Ultrasonics, 43, pp. 35–47 (2004).CrossRefGoogle ScholarPubMed
11. Onoe, M., “Contour Vibrations of Isotropic Circular Plates,” Journal of the Acoustical Society of America, 28, pp. 1158–1161 (1955).Google Scholar
12. Chen, S. S. H. and Liu, T. M., “Extensional Vibration of Thin Plates of Various Shapes,” Journal of the Acoustical Society of America, 58, pp. 828–831 (1975).CrossRefGoogle Scholar
13. Love, A. E. H., A Treatise on the Mathematical Theory of Elasticity, Dover Publications, Inc., New York, pp. 497–498 (1944).Google Scholar
14. Holland, R., “Numerical Studies of Elastic-disk Contour Modes Lacking Axial Symmetry,” Journal of the Acoustical Society of America, 40, pp. 1051–1057 (1966).Google Scholar
15. Ambati, G., Bell, J. F. W. and Sharp, J. C. K., “In-plane Vibrations of Annular Rings,” Journal of Sound and Vibration, 47, pp. 415–432 (1976).CrossRefGoogle Scholar
16. Soedel, W., Vibrations of Shells and Plates, Marcel Dekker, Inc., New York (1981).Google Scholar
17. Azimi, S., “Axisymmetric Vibration of Point supported Circular Plate,” Journal of Sound and Vibration, 135, pp. 177–195 (1989).Google Scholar
18. Leclair, R. A., “Modal Analysis of Circular Plates with a Free Edge and Three Simple Interior Supports,” Journal of Sound and Vibration, 160, pp. 289–300 (1993).Google Scholar
19. ANSYS User's Manual Revision 8.0, ANSYS, Inc., Canonsburg, Pennsylvania (2004).Google Scholar