Raffi Codilian - Irvine CA Shawn E. Casey - San Jose CA
Assignee:
Western Digital Technologies, Inc. - Lake Forest CA
International Classification:
G11B 542
US Classification:
2960303, 360 9703, 3602641, 3602642
Abstract:
A method of making a balance-compensated (BC) rotary actuator for use in a rotatable BC head stack assembly (HSA) portion in a disk drive based upon track-follow characteristics of a rotatable test HSA portion is provided. The test HSA portion includes a test rotary actuator having a test actuator weight specification. The test rotary actuator has an actuator body portion, a test pivot axis extending through the actuator body portion and a head connected to the actuator body portion. The test rotary actuator is controlled to rotate about the test pivot axis for positioning the head over a selected disk track. The test rotary actuator has a test rotary actuator center-of-gravity torque vector associated therewith about the test pivot axis. The method provides for vibrating the disk drive at a vibration frequency in order to vibrate the test HSA portion. Position error information is read using the head while performing a track-follow operation during the vibrating of the test HSA portion.
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Shawn Casey Owner
Fitness 19 Physical Fitness Facility
40789 Garfield Rd, Clinton Twp, MI 48038 (586)2261915
Saint Finbar School Burbank CA 1962-1967, Fox Elementary School Belmont CA 1967-1968, Ralston Intermediate School Belmont CA 1968-1970, Wilson Junior High School Glendale CA 1970-1971