Accession Number : ADD009838
Title : System and Method for Measurement of Dynamic Angular or Linear Displacement.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
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