To realize the stability of the passive magnetic robotic system, a novel combination of permanent magnets is proposed. As we know, a single passive magnetic levitation is impossible to suspend all degrees of freedom of a rigid body; this article researches the combination of multiple passive magnetic bearings by the finite element method (FEM) simulation. Through changing the magnetization dire...

This review deals with the definition and development of hard magnetic materials with special emphasis on more recent developments in this field. After discussing the fundamental properties of all hard magnetic materials, based on the intrinsic and extrinsic properties, some remarks on the history of hard magnetic materials and permanent magnets are given. The important hard ferrites are only b...

Permanent magnets are used in many sorts of devices. They are applied in many electromagnetic transducers – like, for example, electric machines and measurement instruments. Nowadays a new generation of sensors, especially position sensors, are fitted with permanent magnets. Different types of sensors and different working environments require the application of permanent magnets with parameter...

1 We present a three-dimensional study of the torque transmitted between tile permanent magnets 2 uniformly magnetized. All this study is based on the Coulombian model. The torque is calculated semi3 analytically by considering all the surface densities that appear on the tiles. In addition, no simplifying 4 assumptions are done in the expressions given in this paper. Consequently, the evaluati...

The purpose of the newly constructed 8 GeV transfer line is to provide a reliable interconnection of the Booster and the Main Injector. This transfer line is constructed from the combination of the Permanent and Electro-magnets. We present data obtained during the commissioning along with our experience of combined function permanent magnets , DC operation of the electro-magnets and optics mode...

The introduction of rare-earth permanent magnets based on samarium-cobalt in about 1970, and neodymium-iron-boron magnets in the mid-nineteen eighties, has ushered in a new era in hard magnetic materials. This has resulted in a dramatic improvement in permanent magnet performance, with neodymium-iron-boron (Nd2Fe14B) magnets having a magnetic energy product up to an order of magnitude greater t...

Permanent magnet (PM) machines with tooth coil windings are designed and analyzed. We study how the slot wedge material affects the behavior of PM losses when using tooth coil windings, which generate a significant air gap flux density harmonic content. The losses and cogging torques of a surface permanent magnet rotor and an interior permanent magnet rotor are compared in no-load and load situ...