For Full-Text PDF, please login, if you are a member of IEICE,|
or go to Pay Per View on menu list, if you are a nonmember of IEICE.
Research on Distributed Parameter Model of Permanent Magnet in Robust Design of Electromagnetic Relay
Huimin LIANG Jiaxin YOU Zhaowen CAI Guofu ZHAI
IEICE TRANSACTIONS on Electronics
Publication Date: 2014/12/01
Online ISSN: 1745-1353
Type of Manuscript: PAPER
Category: Electronic Components
magnetic field line based equivalent distributed parameter model (MFDPM), magnetic equivalent circuit method (MEC), analytical method, electromagnetic relay, reliability engineering,
Full Text: PDF>>
The reliability of electromagnetic relay (EMR) which contains a permanent magnet (PM) can be improved by a robust design method. In this parameter design process, the calculation of electromagnetic system is very important. In analytical calculation, PM is often equivalent to a lumped parameter model of one magnetic resistance and one magnetic potential, but significant error is often caused; in order to increase the accuracy, a distributed parameter calculation model (DPM) of PM bar is established; solution procedure as well as verification condition of this model is given; by a case study of the single PM bar, magnetic field lines division method is adopted to build the DPM, the starting point and section magnetic flux of each segment are solved, a comparison is made with finite element method (FEM) and measured data; the accuracy of this magnetic field line based distributed parameter model (MFDPM) in PM bar is verified; this model is applied to the electromagnetic system of a certain type EMR, electromagnetic system calculation model is established based on MFDPM, and the static force is calculated under different rotation angles; compared with traditional lumped parameter model and FEM, it proves to be of acceptable calculation accuracy and high calculation speed which fit the requirement of robust design.