Title :
Adaptive accelerometer feedforward servo for disk drives
Author :
Pannu, Satinderpall ; Horowitz, Roberto
Author_Institution :
Dept. of Mech. Eng., California Univ., Berkeley, CA, USA
Abstract :
Discusses the design and experimental verification of a direct adaptive control scheme to attenuate the effect of external disturbances on disk drives. The adaptive controller acts as an add-on compensator to the existing fixed compensator. An accelerometer which is mounted on the base casting of the disk drive generates the input signal for the controller The control objective is to minimize the variance of the position error signal in the presence of external random vibrations. Experimental results show that reduction of 92% in the variance of the position error signal can be obtained
Keywords :
accelerometers; adaptive control; discrete time systems; feedforward; magnetic disc storage; position control; servomechanisms; stochastic systems; transfer functions; adaptive accelerometer feedforward servo; add-on compensator; disk drives; external disturbances; fixed compensator; position error signal variance; Accelerometers; Adaptive control; Application software; Disk drives; Electric shock; Error correction; Programmable control; Servomechanisms; Signal generators; Vibrations;
Conference_Titel :
Decision and Control, 1997., Proceedings of the 36th IEEE Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4187-2
DOI :
10.1109/CDC.1997.649495
