Dynamic model of solenoids under impact excitation, including motion and body currents. II

Author

Lequesne, Bruno

Author_Institution

Gen. Motors Res. Lab., Warren, MI, USA

fYear

1988

fDate

2-7 Oct. 1988

Firstpage

149

Abstract

For pt.I see ibid., p.142-8 (1988). Modeling of solenoids activated from a DC source (impact excitation) is difficult because of the coupling of a nonlinear magnetic system, which includes eddy currents, with a mechanical system that involves a time-varying airgap. The finite-element method (in two dimensions) has been successfully implemented to solve this complex problem. However, the large number of successive iterations involved makes it inconvenient when repeated design trials are made, for instance, during optimization. It is shown that the problem geometry, including eddy currents, can be satisfactorily approximated using only one dimension. The resulting set of equations is solved using the finite-difference method. Comparisons with test data and with 2-D finite-element calculations are conclusive.<>

Keywords

eddy currents; electric actuators; finite element analysis; solenoids; DC source; actuators; dynamic model; eddy currents; finite-difference method; finite-element method; impact excitation; mechanical system; nonlinear magnetic system; solenoids; time-varying airgap; Couplings; Design optimization; Eddy currents; Finite element methods; Geometry; Mechanical systems; Nonlinear dynamical systems; Nonlinear magnetics; Solenoids; Time varying systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 1988., Conference Record of the 1988 IEEE

Conference_Location

Pittsburgh, PA, USA

Type

conf

DOI

10.1109/IAS.1988.25055

Filename

25055