High resolution positioning mechanism for a rotor

Author

Baumann, D.G.

Author_Institution

Dept. of Design & Construction Methods, Swiss Fed. Inst. of Technol., Zurich, Switzerland

fYear

1997

fDate

20-20 June 1997

Firstpage

69

Abstract

Summary form only given as follows. The first part of this paper presents a novel design of a simple high resolution positioning mechanism for a rotor. The positioning mechanism is driven by bimorph piezoelectric actuators. Fine-positionings in a limited workspace are possible by smooth exciting of the bimorph actuators. Unlimited rotation of the rotor is achieved by the utilization of friction between rotor and bearing and the moment of inertia of the rotor caused by rapid deformation of the actuators. The rotor is statically determinate supported in order to guarantee an exact axis of rotation. Finally theoretical and experimental investigations have been done to characterize the static and the dynamic behavior of the positioning.

Keywords

machine control; piezoelectric actuators; position control; rotors; bimorph actuators; bimorph piezoelectric actuators; fine-positionings; high-resolution positioning mechanism; inertia moment; rotor; statically determinate support; unlimited rotation; Damping; Equations; Friction; Kinematics; Mesons; Piezoelectric actuators; Piezoelectric materials; Steel; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Intelligent Mechatronics '97. Final Program and Abstracts., IEEE/ASME International Conference on

Conference_Location

Tokyo, Japan

Print_ISBN

0-7803-4080-9

Type

conf

DOI

10.1109/AIM.1997.652934

Filename

652934