Accession Number : AD0736147

Title :   Modeling of Magnetic Hysteresis.

Descriptive Note : Technical memo.,

Corporate Author : JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s) : Whisnant,J. M. ; Anand,D. K. ; Pisacane,V. L. ; Sturmanis,M.

Report Date : JAN 1971

Pagination or Media Count : 86

Abstract : Magnetic hysteresis rods have been used successfully for damping the attitude motions of passively stabilized near-earth satellites. This paper describes the implementation of a model of magnetic hysteresis that is suitable for digital computer simulations of such motions. The model is based on the domain theory of magnetization, which assumes that a shifted rectangular hysteresis loop is associated with each domain. Coefficients used by the model are determined by least-squares fitting data from experimental hysteresis loops. For a type of hysteresis rod commonly in use, it is shown that a simplified version of the model may be used. Results from the theoretical model are compared with experimentally generated loops and show good agreement. (Author)

Descriptors :   (*SATELLITE ATTITUDE, CONTROL), MAGNETIC PROPERTIES, HYSTERESIS, DAMPING, MATHEMATICAL MODELS, LOW ORBIT TRAJECTORIES, COMPUTER PROGRAMS

Subject Categories : Electricity and Magnetism
      Astronautics

Distribution Statement : APPROVED FOR PUBLIC RELEASE