Browse Prior Art Database

Digital Automatic Gravity Meter Controller

IP.com Disclosure Number: IPCOM000095103D
Original Publication Date: 1965-Sep-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Bernstein, R: AUTHOR

Abstract

The digital control feedback maintains the beam position of the gravity meter near a null position as it is transported over the surface of the earth. This controlled restraint maintains the beam position within a predetermined linear dynamic range to insure the accuracy of the instrument gravity readings.

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Digital Automatic Gravity Meter Controller

The digital control feedback maintains the beam position of the gravity meter near a null position as it is transported over the surface of the earth. This controlled restraint maintains the beam position within a predetermined linear dynamic range to insure the accuracy of the instrument gravity readings.

The average beam position of the gravity meter is periodically sampled and converted to a digital signal by sampler and A-D converter A. Digital control filter B provides a correction signal to digital stepping motor C based upon present and past sampled beam position information. A synchro transmitter D is mechanically driven by motor C. Synchro D controls the rotary position of synchro receiver E to provide the control signals to adjust gravity meter's F spring tension for changing gravity fields.

Filter B can be adjusted to maintain the gravity- sensitive element within a linear operating range to compensate for a wide range of acceleration and gravity inputs.

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