Affiliations: [a] Department of Mechanical and Systems Engineering, Gifu
University, 1-1 Yanagido, Gifu, Gifu 501-1193, Japan. Tel.: +81 58 293 2541;
Fax: +81 58 230 1892; E-mail: sasaki@cc.gifu-u.ac.jp
| [b] LinX Corporation, 1-13-11 Eda-nishi, Aoba-ku,
Yokohama, Kanagawa, 225-0014, Japan | [c] Department of Art and Science, Faculty of Design,
Shizuoka University of Art and Culture, 1794-1 Noguchi-cho, Hamamatsu,
Shizuoka, 430-8533, Japan
Abstract: This paper describes an active electromagnetic levitation control of
a flexible beam using current and magnetic flux instead of a position sensor.
An observer is used to estimate the position based on current, magnetic flux,
fundamental, 1st and 3rd modes of vibration of the beam, and input voltage to
the electromagnet. The controller combines state-feedback with the observer
output to arrive at a new input voltage. Results obtained with a conventional
observer and disturbance observer are discussed. Simulation and experimental
results demonstrate the feasibility of the approaches.
