Title :
An 1-DOF controlled attraction type magnetic bearing
Author :
Silva, I.D. ; Horikawa, O.
Author_Institution :
Escola Politecnica, Sao Paulo Univ., Brazil
Abstract :
This paper presents a new type of magnetic bearing with active control only in the axial direction. The bearing uses two pairs of permanent magnets to restrict the axis radial motion and a control system composed of two electromagnets, a gap sensor and a controller to keep the axis in a fixed axial position. The principle, the dynamic model for axial motion and the control system for this bearing are presented. Finally, by experiments conducted in a prototype, the effectiveness of the conception presented is shown
Keywords :
electromagnets; force control; machine bearings; magnetic devices; motion control; permanent magnets; attraction type magnetic bearing; axial direction active control; axis radial motion restriction; control system; degrees of freedom; dynamic model; electromagnets; gap sensor; permanent magnets; Actuators; Control systems; Electrical equipment industry; Electromagnets; Magnetic levitation; Magnetic sensors; Mechanical engineering; Motion control; Permanent magnets; Sensor systems;
Conference_Titel :
Electric Machines and Drives, 1999. International Conference IEMD '99
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-5293-9
DOI :
10.1109/IEMDC.1999.769152
