Time delay control with state feedback for azimuth motion of the frictionless positioning device

Author

Jeong, Ho-Seop ; Lee, Chong-Won

Author_Institution

Res. & Dev. Center, Samsung Electro-Mech., Kyungki, South Korea

Volume

2

Issue

3

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

161

Lastpage

168

Abstract

A time delay controller with state feedback is proposed for azimuth motion control of the frictionless positioning device which is subject to the variations of inertia in the presence of measurement noise. The time delay controller, which is combined with a low-pass filter to attenuate the effect of measurement noise, ensures the asymptotic stability of the closed-loop system. It is found that the low-pass filter tends to increase the robustness in the design of the time delay controller, as well as the gain and phase margins of the closed-loop system. Numerical and experimental results support that the proposed controller guarantees a good tracking performance, irrespective of the variation of inertia and the presence of measurement noise

Keywords

asymptotic stability; closed loop systems; delay systems; digital control; low-pass filters; magnetic levitation; motion control; position control; state feedback; active magnetic bearing; asymptotic stability; azimuth motion control; brushless DC motors; closed-loop system; frictionless positioning device; low-pass filter; state feedback; time delay controller; tracking; Azimuth; Control systems; Delay effects; Low pass filters; Motion control; Motion measurement; Noise measurement; Position measurement; State feedback; Time measurement;

fLanguage

English

Journal_Title

Mechatronics, IEEE/ASME Transactions on

Publisher

ieee

ISSN

1083-4435

Type

jour

DOI

10.1109/3516.622968

Filename

622968