STUDY CONCERNING THE IMPLEMENTATION OF SOME KINDS OF ULTRASONIC MOTORS IN POSITIONING SYSTEMS OF SOLAR PANELS

Autor/autori: assoc. prof. eng. L. Dan MILICI, PhD, eng. Liviu N. LUCHIAN, assoc. prof. eng. Mariana R. MILICI, PhD, as. prof. eng. Vasilis CHATZIATHANASIOU, PhD (Grecia), as. prof. eng. Konstantinos PAPAKOSTAS, PhD (Grecia)

Rezumat: Lucrarea isi propune studierea, modelarea si experimentarea unor modele de motoare rotative si liniare ce utilizeaza unde ultraacustice pentru realizarea deplasarii. Motoarele studiate sunt caracterizate prin precizie de pozitionare, inertie mica, domeniu larg de reglaj al vitezei (nu necesita angrenaje si reductoare), control usor, cuplu ridicat pe unitatea de greutate, miniaturizare, structura simpla, zgomot redus, caracteristica descrescatoare moment – viteza. Tema are caracter transdiciplinar, abordand elemente din domeniul masinilor si electronicii, materialelor electrotehnice, mecanicii, undelor, informaticii si metodelor numerice, al modelarii sistemelor electromecanice.

Cuvinte cheie: motor ultrasonic, efect piezoelectric, unde acustice

Abstract: This paper aims the studying, modeling and testing of models of linear motors which use ultrasonic waves to achieve the movement. The studied motors are characterized by the positioning accuracy, small inertia, wide speed control (does not require gears and gearboxes), easy control, high torque per unit weight, miniaturization, simple structure, low noise, decreasing time-speed characteristic. Theme is nature trans-disciplinary work, addressing elements of the electrical machines and electronics, electrical materials, mechanics, waves, computer and numerical methods, modeling of electromechanical systems

Keywords: ultrasonic motor, piezoelectric effect, acustic waves

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