Open AccessBasics of the electropiezoelasticity theory of piezoelectric motors with linear and rotary motion
Author(s) -
W. Przyborowski
Publication year - 2018
Publication title -
biuletyn wojskowej akademii technicznej
Language(s) - English
Resource type - Journals
ISSN - 1234-5865
DOI - 10.5604/01.3001.0012.8504
Subject(s) - piezoelectricity , piezoelectric motor , rotation around a fixed axis , equations of motion , linear motor , electric motor , classical mechanics , constitutive equation , mechanics , linear motion , physics , mechanical engineering , control theory (sociology) , engineering , acoustics , computer science , finite element method , thermodynamics , control (management) , artificial intelligence
The paper presents the basics of the theory of electropiezoelasticity and adaptation of thistheory to description of the simplest electromechanical converters − piezoelectric type electric motors.Because piezoelectricity and elasticity are coupled by complex piezoelasticity constitutive compounds,the formulation of a general mathematical model for these motors is not possible. Therefore, equationsfor structurally simple piezoelectric motors with linear and rotational motion have been formulatedin the paper. Motors with linear movement are characterized by a flat or tube form. Rotary motors,on the other hand, have a cylindrical or disc-shaped form.The electric field, in the adopted forms of piezoelectric motors generating a piezoelectric effect, isa single-field perpendicular to the direction of motion.The determined equations could be simplified by reduction of some constitutive parameters, but itrequires a detailed analysis of material compounds and consideration in the interactions of forcesand torques in these motors, also strong piezoelectric stresses, which determine a specific kinetics.Keywords: piezoelectric motors with translational and rotary motion, equations of electric-piezoelasticity.