Title :
Design of multi-stage composite nonlinear feedback control for hard disk drives
Author :
Peng, Kemao ; Cheng, Guoyang ; Chen, M. ; Lee, Tong H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
The multistage composite nonlinear feedback (MCNF) control is proposed to improve effectiveness of the composite nonlinear feedback (CNF) control. The latter is developed for a class of linear systems with actuator saturation and consists of a linear and a nonlinear feedback part without any switching element. There is another nonlinear feedback part added in the MCNF control compared to the CNF control. The added nonlinear feedback will be effective after the original one has been set to be linear and a new CNF control will be constructed. Experimental results show that the MCNF control can produce better performances than the CNF control to design hard disk drive (HDD) servo systems.
Keywords :
control system synthesis; disc drives; feedback; hard discs; large-scale systems; nonlinear control systems; CNF control; HDD servo systems; MCNF control; actuator saturation; hard disk drive servo systems; linear feedback; linear systems; multistage composite nonlinear feedback control design; nonlinear feedback; Bandwidth; Control systems; Feedback control; Hard disks; Hydraulic actuators; Linear feedback control systems; Linear systems; Nonlinear control systems; Servomechanisms; Switches;
Conference_Titel :
Intelligent Control, 2002. Proceedings of the 2002 IEEE International Symposium on
Print_ISBN :
0-7803-7620-X
DOI :
10.1109/ISIC.2002.1157853
