Title :
Servo controller design for high-bandwidth HDDs
Author :
Suh, Sang-Min ; Chung, Chung Choo ; Lee, Seung-Hi
Author_Institution :
Div. of Electr. & Comput. Eng., Hanyang Univ., Seoul, South Korea
fDate :
9/1/2002 12:00:00 AM
Abstract :
This paper presents a new controller design method for wide bandwidth servo systems. A new LQG/LTR design method is proposed to achieve a wide bandwidth servo controller. Both robustness and wide servo bandwidth are achieved, maximizing relative stability.
Keywords :
control system synthesis; disc drives; hard discs; linear quadratic Gaussian control; robust control; servomechanisms; transfer functions; LQG/LTR design method; Nyquist plot; controller design method; high-bandwidth HDDs; loop transfer function; relative stability; robustness; servo controller design; wide bandwidth servo controller; wide servo bandwidth; Actuators; Bandwidth; Delay; Design methodology; Filters; Frequency; Resonance; Robustness; Servomechanisms; Transfer functions;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.801858
