DEVELOPMENT OF PIEZOELECTRIC MOTOR FOR BIOPROSTHESIS
DOI:
https://doi.org/10.24025/2306-4412.3.2019.173433Keywords:
bioprosthes, piezoelectric motor, bimorph piezoelementAbstract
Currently, worldwide, the development and research of piezoelectric motors is a very relevant and important problem that attracts a large number of researchers. The interest in this problem is due to the prospect of creating small piezoelectric motors. This allows to obtain unique devices in which electric vibrations turn into rotary movement, in addition, the rotating moment that develops on the shaft of such an engine is so large that eliminates the need for a mechanical gearbox to increase the torque. The world leaders in the production of piezoelectric motors are the following companies: Physik Instrumente (PI), New Scale Technologies and others.
The main purpose of this paper is to study and improve piezomotors, for the use in bioprostheses as actuators. Piezomotors are the main element of many microelectromechanical systems that are used in military sphere, in particular in robotics, and also in scientific research instruments. But all these piezoelectric motors have a number of disadvantages, the main of which are: high control voltage, small range of movement of the moving parts, the complexity of manufacturing structures, and large dimensions that reduce their application in various fields. Based on the drawbacks of these constructions, we have proposed and developed our own piezoelectric motor design, and simulated one biomorphic plate in the COMSOL Multiphysics program package. With the COMSOL Multiphysics program, forms of mechanical oscillations, deformations, resonance frequency of bending oscillations, and maximum amplitude of oscillations are determined. Also, in this paper, the coefficient of stiffness of bimorph piezoelements is given, thus, a qualitative mathematical model can significantly reduce the time and costs for the development of bimorph piezoelements.
The use of bimorph piezoelectric cells in the developed piezoelectric motor increases the ampli-tude of oscillations, and reduces the amplitude of the control signal. The obtained data can be used in the design of devices where piezoceramic actuators are used.
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Copyright (c) 2020 Сергій Олександрович Філімонов, Надія Вікторівна Філімонова, Дмитро Сергійович Бачеріков, Андрій Олександрович Мисан The authors who publish in this journal agree to the following terms:The authors reserve the right to authorship of their work and give the journal the right to first publish this work under the terms of the Creative Commons Attribution License CC BY-NC, which allows other persons to freely distribute published work with a mandatory reference to authors of the original work and the first publication of the work in this journal.
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