Title :
Comparison of friction measurement between load/unload ramps and suspension lift tabs using strain gage and actuator current
Author :
Suk, Mike ; Gillis, Donald R.
Author_Institution :
Storage Technol. Div., San Jose, CA, USA
fDate :
9/1/2000 12:00:00 AM
Abstract :
Friction force between the load/unload ramp and suspension is measured and compared using two different methods. One method uses a well-known technique utilizing strain gages, which is similar to the method used to measure stiction and friction during contact-start-stop. The other method involves measuring the required actuator current to move the suspension across the load/unload ramp. In this paper we show that the actuator measurement can accurately predict the friction force between the ramp and the suspension on certain regions of the ramp
Keywords :
actuators; friction; magnetic heads; mechanical variables measurement; strain gauges; actuator current; disk drive; friction measurement; load/unload ramp; magnetic recording head; slider; strain gauge; suspension lift tab; Acceleration; Actuators; Capacitive sensors; Current measurement; Force measurement; Friction; Magnetic levitation; Monitoring; Strain measurement; Torque measurement;
Journal_Title :
Magnetics, IEEE Transactions on