Accession Number : ADD009838

Title :   System and Method for Measurement of Dynamic Angular or Linear Displacement.

Descriptive Note : Patent,


Personal Author(s) : Loker,Aleck ; Archibald,Richard

Report Date : 21 Sep 1981

Pagination or Media Count : 9

Abstract : This invention relates to a system and method for measuring linear displacements, especially wear in the coupling of two rotating shafts. A magnetic pickup is located near each shaft and a magnetic pole located at a fixed position on each shaft induces a magnetic pulse in its associated pickup when the pole passes under the pickup. The pulses are fed to an AND gate and produce an output pulse when they overlap. As wear progresses, the magnetic pulses overlap either more or less, depending on the direction of rotation of the shafts and, correspondingly, the AND-gate output pulse duration increases or decreases. The change in AND-gate pulse duration is a measure of coupling wear and can be recorded or displayed in engineering measurement units.

Descriptors :   *Patents, *Shafts(Machine Elements), *Wear, *Rotation, *Measurement, Linear systems, Displacement, Dynamics, Magnetic properties, Magnetic fields, Engineering, Overlap, Angles, Inventions

Subject Categories : Machinery and Tools
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE