Title :
Designing controllers for two stage disk drive actuator systems using the PQ method and the sbode plot
Author :
Rapley, Holly R. ; Messner, William C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA
fDate :
3/1/2001 12:00:00 AM
Abstract :
The PQ method is a technique for transforming the problem of designing controllers for dual-input/single-output (DISO) systems to two single-input/single-output (SISO) design problems, and the sbode plot is a new modification of the traditional bode plot which facilitates loop shaping design for SISO systems. This paper shows how to employ the two tools to meet aggressive closed-loop performance specifications for a disk drive system with a piezoelectric active suspension and a voice coil motor
Keywords :
closed loop systems; compensation; control system synthesis; disc drives; piezoelectric actuators; DISO systems; PQ method; SISO design problems; bode plot; closed-loop performance specifications; controller design; dual-input/single-output systems; loop shaping design; piezoelectric active suspension; sbode plot; single-input/single-output design problems; two stage disk drive actuator systems; voice coil motor; Actuators; Bandwidth; Coils; Control systems; Data storage systems; Disk drives; Feedback; Frequency response; Servomechanisms; Shape control;
Journal_Title :
Magnetics, IEEE Transactions on
