System and method for uniform frequency response independent of

Details System and method for uniform frequency response independent of System and method for uniform frequency response independent of

1998-09-22

1999-12-14

Larkin, Daniel S.

Measuring and testing

Surface and cutting edge testing

Roughness

G01B 528

Patent

active

060002824

ABSTRACT:
A system for detecting and measuring the height of asperities on a substantially flat solid surface is disclosed. The system includes a glide head assembly for contacting asperities on the substantially flat solid surface and producing a sensor voltage whose frequency response is a function of both the height of the asperities and the location at which the glide head assembly contacts the asperities. The system also includes a signal processing device responsive to the sensor voltage from the glide head assembly for analytically defining a frequency window within which the frequency response of the sensor voltage is relatively independent of the location on the glide head assembly at which the glide head assembly contacts the asperities. The signal processing device measures the height of an encountered asperity by computing an actual RMS voltage within the frequency window of the frequency response of the sensor voltage produced by the glide head assembly after contacting the asperity.

REFERENCES:
patent: 4532802 (1985-08-01), Yeack-Scranton et al.
patent: 5168412 (1992-12-01), Doan et al.
patent: 5423207 (1995-06-01), Flechsig et al.
patent: 5450747 (1995-09-01), Flechsig et al.
patent: 5581021 (1996-12-01), Flechsig et al.
patent: 5689064 (1997-11-01), Kennedy et al.
patent: 5817931 (1998-10-01), Boutaghou
patent: 5864054 (1999-01-01), Smith, Jr.
Wallash, "Reproduction of Slider Vibrations During Head/Disk Interactions Using PZT Sensors", IEEE Transactions on Magnetics, vol. 24, No. 06, Nov. 1988, pp. 2763-2765.

Affiliated with

Also associated with

Rating

System and method for uniform frequency response independent of does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for uniform frequency response independent of , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for uniform frequency response independent of will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-853955