Performance test method of head gimbal assembly with precise...

Details Performance test method of head gimbal assembly with precise... Performance test method of head gimbal assembly with precise...

2007-07-27

2010-02-16

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

C360S075000, C360S078050, C360S294400

Reexamination Certificate

active

07663829

ABSTRACT:
A method of testing a performance of a HGA including a magnetic head and a micro-actuator for precisely positioning the magnetic head with respect to a magnetic medium is disclosed. The key of the method is to obtain three track center values under conditions of no driving the micro-actuator, driving the micro-actuator in a positive direction using an operating DC voltage, and driving the micro-actuator in a negative direction using the operating DC voltage respectively, and finally do calculation of the three track center values, thus successfully obtains the displacement performance of the micro-actuator in a simple way. The method is capable of testing the HGA's performance under lower operating voltage by moving the slider by a predetermined distance toward an off-track direction, which accordingly assists to identify three track center values and thereby ensures the method an accurate measurement.

REFERENCES:
patent: 6801377 (2004-10-01), Kasajima et al.
patent: 7085083 (2006-08-01), Zhu et al.
patent: 2002/0135913 (2002-09-01), Yanagimoto
patent: 2003/0048561 (2003-03-01), Kadokawa

Affiliated with

Also associated with

Rating

Performance test method of head gimbal assembly with precise... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Performance test method of head gimbal assembly with precise..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Performance test method of head gimbal assembly with precise... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4186144