Title :
The influence of filter on stability of electromagnetic levitation system
Author :
Huajie, Hong ; Jie, Li
Author_Institution :
Nat. Univ. of Defense Technol., Changsha, China
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;
Conference_Titel :
Control, Automation, Robotics and Vision Conference, 2004. ICARCV 2004 8th
Print_ISBN :
0-7803-8653-1
DOI :
10.1109/ICARCV.2004.1469048
