Title :
Control of a micro-actuator for hard disk drives using self-sensing
Author :
Yamada, Hiroyuki ; Sasaki, Minoru ; Nam, Yoonsu
Author_Institution :
Graduate Sch. of Eng., Gifu Univ., Japan
Abstract :
This paper describes control of a micro-actuator for hard disk drives using self-sensing actuation. The self-sensing actuator using electrical bridge circuit can measure either strain or time rate of strain in the actuator. These sensing signals correspond to the tip slope of the actuator and the time rate of tip slope of the actuator. The usefulness of the self-sensing actuation technique is experimentally verified by actively damping the vibration in a micro-actuator.
Keywords :
bridge circuits; disc drives; hard discs; microactuators; position control; vibration control; electrical bridge circuit; hard disk drives; microactuator control; position control; self sensing actuation; strain measurement; vibration damping; Assembly; Hard disks; Magnetic field induced strain; Magnetic heads; Microactuators; Piezoelectric actuators; Piezoelectric materials; Strain measurement; Vibrations; Voltage;
Conference_Titel :
Advanced Motion Control, 2004. AMC '04. The 8th IEEE International Workshop on
Print_ISBN :
0-7803-8300-1
DOI :
10.1109/AMC.2004.1297657
