Research of speed ripple reduction method for computed tomography

Author

Lee, K.W. ; Park, J.W. ; Kwon, Y.A.

Author_Institution

Mechatronics Group, Korea Electrotechnol. Res. Inst., Changwon, South Korea

Volume

3

fYear

2004

fDate

2-6 Nov. 2004

Firstpage

2132

Abstract

This paper presents a study on the high performance speed control of permanent magnet synchronous motor for a computed tomography (CT). In a CT system, many units are attached on the rotational part of the gantry, such as x-ray tube, detector, collimator, and data acquisition system. Therefore, it is difficult to balance many components of different weights; this is inevitable problem in CT systems. To reduce speed ripple caused by eccentricity, this study proposed modified adaptive eccentricity compensator (modified AEC) and verified its validity by comparing it with load torque observer (LTO).

Keywords

angular velocity control; compensation; computerised tomography; machine control; observers; permanent magnet motors; synchronous motors; CT; adaptive eccentricity compensator; collimator; computed tomography; data acquisition system; detector; eccentricity; load torque observer; permanent magnet synchronous motor; speed control; speed ripple reduction method; x-ray tube; Collimators; Computed tomography; Data acquisition; Equations; Observers; State estimation; Torque; X-ray detection; X-ray detectors; X-ray imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 2004. IECON 2004. 30th Annual Conference of IEEE

Print_ISBN

0-7803-8730-9

Type

conf

DOI

10.1109/IECON.2004.1432126

Filename

1432126