Browse Prior Art Database

Feedforward control for magnet latch release

IP.com Disclosure Number: IPCOM000013768D
Original Publication Date: 2001-Nov-17
Included in the Prior Art Database: 2003-Jun-18

Publishing Venue

IBM

Abstract

Disclosed is 'Feedforward control for magnet latch release'. 1) Introduction We invent feedforwad control for ramp loading of HDD and show you what it is. 2) Conventional method Ramp loading needs velocity control. Velocity can be monitored by BEMF(Back Electro -Magnetic Force). We should control velocity by VCM current to load actuator properly