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An electromagnetic forcing device

An electromagnetic forcing mechanism is described which uses feedback to reduce unwanted harmonics in the force

descriptionPublicationkeyboard_double_arrow_right Article 01 May 1978 United States Publisher:Springer Science and Business Media LLCJournal:Experimental Mechanics, volume 18, pages 161-166 (issn: 0014-4851, eissn: 1741-2765,

Authors: Hyer, M. W.; Anderson, William J.; Scott, R. A.;

doi: 10.1007/bf02324136

handle: 2027.42/43929

An electromagnetic forcing device

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Abstract

The paper describes the drawbacks of an electromagnetic forcing device, of the type commonly used to study forced vibration of structures, and presents details of a feedback control system designed to overcome them. The work described was initiated when attempting to generate sinusoidal forcing in a nonlinear beam-vibration study. Magnetic-material nonlinearities and spatial inhomogenieties in the magnetic field led to unwanted harmonics in the force the beam experienced, and feedback was used to reduce these effects. A brief description of the principles of feedback control is presented and the problems encountered in applying the concepts to the electromagnetic forcing device are discussed. Details of the system, its problems, operating characteristics and limitations are presented.

Country

United States

Related Organizations

Old Dominion University
United States
University of Michigan–Flint
United States

Keywords

Theoretical and Applied Mechanics, Engineering Fluid Dynamics, Engineering, Materials Science and Engineering, Mechanical Engineering, Engineering (General), Structural Mechanics, Characterization and Evaluation Materials, Engineering Design

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	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	3
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	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Average