Surface Elevation Measuring Apparatus.

Abstract

A terrain probe for sensing the elevation of a terrain surface whose profile is being measured and followed. A two-phase induction motor will raise or lower the terrain probe in response to either an increase or decrease in the elevation of the terrain surface. A four arm bridge circuit, which has an arm enclosed within the terrain probe, in combination with a low frequency oscillator, a differential amplifier, and power amplifier generate a sinusoidal drive signal which controls the two-phase induction motor. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 15, 1979
Accession Number
ADD006090

Entities

People

  • John C. Mckecknie

Organizations

  • United States Department of the Navy

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Electronic Amplifier
  • Electronic Equipment
  • Elevation
  • Frequency
  • Induction Motors
  • Motors
  • Oscillators
  • Power Amplifiers

Readers

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