Facta Universitatis ser.: Elect. and Energ.
vol. 9, No. 2 (1996) 263-273

MAGNETOELASTIC FORCE-MEASURING TRANSDUCER

Georgi Ianakiev Trendafilov

Abstract: Subject of the paper is a construction of a magnetoelastic force-measuring transducer based on the magnetic permeability alteration in the active sections of a magnetic core, with a channelized magnetic field, under the effect of some mechanical tensions, originating in the sections, which are generated by external forces. Described are several variants of implementing the transducer: depending on the position of the bobbins and their connection to the measuting scheme, it can be differentially inductive or differentially transforming; according to the way the force is applied, it can have one or two active sections. Examined are the principle of operation, the theory and measuring schemes with the different versions of the transducer; enclosed are the results from the experimental tests, indicated are the application possibilities of the transducer in industrial force-measuring devices.

Keywords: Force measurung, force transducer, magnetostrictive transducer, inductive transducer, mutually inductive transducer.

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