Title :
Active correction of mass imbalance for a precise rotor
Author :
Lee, J.K. ; Ihn, Y.S. ; Koo, J.C. ; Oh, Dongho ; Lee, Ho Sung
Author_Institution :
Sch. of Mech. Eng., Sungkyunkwan Univ., Suwon
Abstract :
An active mass imbalance correction method for a precision rotor that is formulated iteratively is introduced. Since mass imbalance of a precise rotor has been one of the critical volume production issues for a long time especially in the data storage industry, various imbalance correction methods are developed and successfully implemented. Nevertheless, volume manufacturing tolerance of the mass imbalance has ever been tightened up as the data storage density has been increased. Recognizing the limitation of the practicality of fine-tuned rotor balance for volume production, development of an adaptive dynamic rotor balance scheme is of great worth. In the present work an application of frequency based control method popularly used for repeatable runout compensation to the mass imbalance reduction enables reliable accurate balancing of precise rotor.
Keywords :
disc drives; hard discs; rotors; active mass imbalance correction method; adaptive dynamic rotor balance; data storage industry; fine-tuned rotor balance; frequency based control method; hard disk drive; precise rotor; volume manufacturing tolerance; volume production issues; Counting circuits; Educational institutions; Hard disks; Manufacturing; Mechanical engineering; Memory; Rotors; Spatial resolution; Vehicle dynamics; Weight control; Active mass imbalance correction; Precise rotor; Repeatable runout;
Conference_Titel :
Magnetic Recording Conference, 2009. APMRC '09. Asia-Pacific
Conference_Location :
Singapore
Print_ISBN :
978-9810-82191-3
DOI :
10.1109/APMRC.2009.4925392