Title :
Runout compensation in active magnetic bearings with iterative learning control scheme
Author :
Chao Bi ; Dezheng Wu ; Quan Jiang ; Liu, Z.
Author_Institution :
Data Storage Inst.
Abstract :
Active magnetic bearing is a promising candidate for next generation spindle motors of hard disk drives. In this paper, an iterative learning control scheme is proposed to suppress the rotor poison runout induced by the unbalanced forces in AMB. The ILC controller can produce the synchronous compensation force by iteratively "learning" rotor runout information. This compensation force makes the rotor rotate about its geometric axis
Keywords :
disc drives; hard discs; learning systems; machine bearings; magnetic bearings; motor drives; position control; rotors; ILC controller; active magnetic bearings; geometric axis; hard disk drives; iterative learning control scheme; rotor position runout compensation; spindle motors; synchronous compensation force; Bismuth; Coils; Force control; Hard disks; Magnetic levitation; Memory; Position control; Rotors; Stator cores; Synchronous motors;
Conference_Titel :
Asia-Pacific Magnetic Recording Conference, 2004. APMRC 2004
Conference_Location :
Seoul
Print_ISBN :
0-7803-8717-1
DOI :
10.1109/APMRC.2004.1521953
