[1] Liu Houguang, Ta Na, Rao Zhushi,. Voltage property analysis of piezoelectric floating mass actuatorused in middle ear implant [J]. Journal of Southeast University (English Edition), 2009, 25 (4): 496-500. [doi:10.3969/j.issn.1003-7985.2009.04.017]

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Voltage property analysis of piezoelectric floating mass actuatorused in middle ear implant()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

25

Issue:

2009 4

Page:

496-500

Research Field:

Electronic Science and Engineering

Publishing date:

2009-12-30

Info

Title:

Voltage property analysis of piezoelectric floating mass actuatorused in middle ear implant

Author(s):

Liu Houguang;  Ta Na;  Rao Zhushi

State Key Laboratory of Mechanical System and Vibrations, Shanghai Jiaotong University, Shanghai 200240, China

Keywords:

middle ear implant;  piezoelectric actuator;  floating mass;  driving voltage

PACS:

TN384

DOI:

10.3969/j.issn.1003-7985.2009.04.017

Abstract:

Aiming at a kind of middle ear implant(MEI), the driving voltage of a piezoelectric floating mass actuator is analyzed using a 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3(PMN-30%PT)stack as a new type of vibrator. For the purpose of facilitating the analysis, a simplified coupling model of the ossicular chain and the piezoelectric actuator is constructed. First, a finite element model of a human middle ear is constructed by reverse engineering technology, and the validity of this model is confirmed by comparing the simulated motion of the stapes footplate obtained by this model with experimental measurements. Then the displacement impedance of the incus long process is analyzed, and a single mass-spring-damper equivalent model of the ossicular chain attached with the clamp is derived. Finally, a simplified coupling model of the ossicular chain and the piezoelectric actuator is established and used to analyze the driving voltage property of the actuator. The results show that the required driving voltage decreases with the increase in the frequency, and the maximum required driving voltage is 20.9 V in the voice frequencies. However, in the mid-high frequencies where most sensorineural hearing loss occurs, the maximum required driving voltage is 3.8 V, which meets the low-voltage and low-power requirements of the MEI.

References:

[1] The Second China National Sample Survey Office on Disability. The second China national sample survey data on disability [M]. Beijing: China Statistics Press, 2007.(in Chinese)
[2] Meister H, Lausberg I, Kiessling J, et al. Determining the importance of fundamental hearing aid attributes [J]. Otology & Neurotology, 2002, 23(4): 457-462.
[3] Silverstein H, Atkins J, Thompson J H Jr, et al. Experience with the SOUNDTEC implantable hearing aid [J]. Otology & Neurotology, 2005, 26(2): 211-217.
[4] Truy E, Philibert B, Vesson J F, et al. Vibrant soundbridge versus conventional hearing aid in sensorineural high-frequency hearing loss: a prospective study [J]. Otology & Neurotology, 2008, 29(5): 684-687.
[5] Hong E P, Kim M K, Park I Y, et al. Vibration modeling and design of piezoelectric floating mass transducer for implantable middle ear hearing devices [J]. IEICE Trans Fundamentals, 2007, E90-A(8): 1620-1627.
[6] Sun Q, Chang K H, Dormer K J, et al. An advanced computer-aided geometric modeling and fabrication method for human middle ear [J]. Med Eng Phys, 2002, 24(9): 595-605.
[7] Beer H J, Bornitz M, Hardtke H J, et al. Modeling of components of the human middle ear and simulation of their dynamic behavior [J]. Audiol Neurootol, 1999, 4(3/4): 156-162.
[8] Sun Q. Computer-integrated finite element modeling and simulation of human middle ear [D]. Oklahoma: The University of Oklahoma, 2001.
[9] Prendergast P J, Ferris P, Rice H J, et al. Vibro-acoustic modelling of the outer and middle ear using the finite-element method [J]. Audiol Neurootol, 1999, 4(3/4): 185-191.
[10] Gan R Z, Dyer R K, Wood M W, et al. Mass loading on ossicles and middle ear function [J]. Ann Otol Rhinol Laryngol, 2001, 110(5): 478-485.
[11] Aibara R, Welsh J T, Puria S, et al. Human middle ear sound transfer function and cochlear input impedance [J]. Hearing Res, 2001, 152(1/2): 100-109.
[12] Ko W, Zhu W, Maniglia A. Engineering principles of mechanical stimulation of the middle ear [J]. Otolaryngologic Clinics of North America, 1995, 28(1): 29-41.
[13] Liu H, Yan G Z, Ding G Q. Research on inertial piezoelectric actuator [J]. Piezoelectric & Acoustooptics, 2001, 23(4): 275-278.(in Chinese)
[14] Choi S B, Hong S R, Han Y M. Dynamic characteristics of inertial actuator featuring piezoelectric materials: experimental verification [J]. Journal of Sound and Vibration, 2007, 302(4/5): 1048-1056.

Memo

Memo:

Biographies: Liu Houguang(1982—), male, graduate; Rao Zhushi(corresponding author), male, doctor, professor, zsrao@sjtu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.10772121), the Med-Science Cross Research Foundation of Shanghai Jiaotong University(No.YG2007MS14).
Citation: Liu Houguang, Ta Na, Rao Zhushi. Voltage property analysis of piezoelectric floating mass actuator used in middle ear implant[J]. Journal of Southeast University(English Edition), 2009, 25(4): 496-500.

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