The influence of filter on stability of electromagnetic levitation system

Author

Huajie, Hong ; Jie, Li

Author_Institution

Nat. Univ. of Defense Technol., Changsha, China

Volume

2

fYear

2004

fDate

6-9 Dec. 2004

Firstpage

1379

Abstract

Filter is a part to degrade the noise during designing electric circuit, it is seldom considered during controlling system design. But it will greatly influence the stability of system. In this paper, the stability of PD controller without filter is analyzed. The oscillation condition and oscillation frequency are given. Simulation validates the results. Subsequently the velocity filter is involved and the relationship between the filter parameter and velocity feedback gain is brought up. The result is given by graph after digital calculation and corrects the region of PID controller, which stabilizes the levitation system.

Keywords

PD control; control system synthesis; feedback; filters; magnetic levitation; stability; three-term control; vehicles; PD control; electromagnetic levitation system stability; filter parameter; oscillation condition; oscillation frequency; velocity feedback gain; velocity filter; Circuit noise; Circuit simulation; Circuit stability; Control systems; Degradation; Filters; Frequency; Levitation; PD control; Stability analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Control, Automation, Robotics and Vision Conference, 2004. ICARCV 2004 8th

Print_ISBN

0-7803-8653-1

Type

conf

DOI

10.1109/ICARCV.2004.1469048

Filename

1469048