A method and apparatus are disclosed which are operable to determine a capacitance associated with at least one piezoelectric element in an dual actuator disk drive. The capacitance information is used to adjust a driver used to drive the piezoelectric element. Capacitance is determined by supplying a predetermined current into the piezoelectric element(s) for a predetermined time period. A voltage associated with the piezoelectric element(s) is measured following the predetermined time period. The capacitance of the piezoelectric element(s) is then calculated based on the measured voltage, the current supplied, and the predetermined time period.

 
Web www.patentalert.com

< Resource reservation system in a computer network to support end-to-end quality-of-service constraints

< Serial ATA disk drive having a parallel ATA test interface and method

> Method and apparatus for high fly write detection in a disk drive

> Method to accurately predict hard error rates resulting from encroachment
~ 00226