A micro ultrasonic motor controlled by using a built-in micro magnetic encoder

Author

Kanda, Takefumi ; Maeda, Hiraku ; Suzumori, Koichi

Author_Institution

Grad. Sch. of Natural Sci. & Technol., Okayama Univ., Okayama, Japan

fYear

2010

fDate

6-9 July 2010

Firstpage

1029

Lastpage

1034

Abstract

The purpose of this paper is to design a new micro ultrasonic motor which has a micro encoder. This motor has a rectangular prism shape. The side length of the cuboid case´s base is 2.6 mm and the height is 9.6 mm. In addition, the micro encoder is mounted on the top of the ultrasonic motor. The encoder is a magnetic type. This micro encoder is unified with a motor shaft and a magnetic drum has 10 poles by 0.43 mm pitch. This encoder outputs 20 pulses every revolution. The performance of the magnetic encoder and motor has been evaluated. We have also controlled the revolution speed of the micro ultrasonic motor by using the built-in encoder.

Keywords

angular velocity control; control system synthesis; geometry; machine control; micromotors; shafts; ultrasonic motors; magnetic drum; micro magnetic encoder; micro ultrasonic motor control; motor shaft; rectangular prism shape; revolution speed control; Acoustics; DC motors; Magnetic levitation; Magnetic resonance; Stators; Torque; Transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Intelligent Mechatronics (AIM), 2010 IEEE/ASME International Conference on

Conference_Location

Montreal, ON

Print_ISBN

978-1-4244-8031-9

Type

conf

DOI

10.1109/AIM.2010.5695919

Filename

5695919