Title :
Stability Analysis and Controller Design for a Magnetic Bearing with 5 Degree of Freedoms
Author :
Li, Qunming ; Yin, Songduo ; Wan, Liang ; Duan, Ji´an
Author_Institution :
Central South Univ., Changsha
Abstract :
The construction and design of a mixed magnetic bearing with 5 DOFs (degree-of-freedoms) is introduced in this paper. The bearing can be stabilized in all five DOFs by only one DOF feedback control in the axis direction, the other DOFs are controlled passively by permanent magnetic bearings. The carrying stiffness matrix of the bearing is calculated and its stability characteristics are analyzed. In addition, the PID control strategy is brought forward. The controller parameter range is determined according to the stability criterion of the system. The PID controller parameter is obtained using the academic way. It indicates that the parameter gained can meet the demand of the stability
Keywords :
control system synthesis; feedback; machine control; magnetic bearings; parameter estimation; permanent magnets; stability; three-term control; PID control; PID controller parameter selection; bearing stiffness matrix; controller design; feedback control; permanent magnetic bearing; stability analysis; stability criterion; Automation; Control systems; Feedback control; Intelligent control; Magnetic analysis; Magnetic levitation; Stability analysis; Stability criteria; Three-term control; PID control; parameter selection; permanent magnetic bearing; stability analysis;
Conference_Titel :
Intelligent Control and Automation, 2006. WCICA 2006. The Sixth World Congress on
Conference_Location :
Dalian
Print_ISBN :
1-4244-0332-4
DOI :
10.1109/WCICA.2006.1713533
