Magnetic Field of an Electromagnet with Bored Pole-pieces

Parameters That Affect the Accuracy and Setability of a Magnetic Field in an Iron Core Electromagnet*

Modeling, Simulation and Control of Dual Electromagnet Active Magnetic Levitation

This paper presents the simulation of the dual electromagnet Active Magnetic Levitation System realized in the COMSOL Multiphysics software. The mixed mode of Partial Differential and Ordinary Differential Equations is used to realize the levitated object motion. Two control scenarios are given as illustrative example of the working model.

Birkeland, Darboux and Poincaré: Motion of an Electric Charge in the Field of a Magnetic Pole

1 Problem In 1896, Birkeland reported [1, 2, 3, 4] studies of a Crookes tube when a strong, straight electromagnet was placed outside and to the left, as in the figures below.

The heliospheric magnetic field at solar minimum: Ulysses observations from pole to pole

The fast transit of the Ulysses spacecraft from the south polar regions of the heliosphere to the north polar regions has allowed us to obtain a unique perspective on the configuration and properties of the heliospheric magnetic field at a time of solar minimum activity. We compare the magnetic field in the northern and southern hemispheres and find no evidence of asymmetry in the radial compon...

Optimization of the Shape of an Electromagnet: Regularity

In this paper we study the regularity of the solution of an elliptic partial di erential equation with discontinuous coe cients. This result is used to establish the continuous Fr echet di erentiability of a shape functional arising in the optimal shape design of an electromagnet.