Due to their peculiar property of controlled stiffness and strength under an external magnetic field, magnetorheological (MR) fluids show great potential in developing hybrid robotic grippers that the future could offer same versatility as human hand. This demands for sufficiently strong, compact switchable field sources which permanent magnets are often overshadowed by electromagnets. However,...

Aiming at improving the torque density of motor and utilization rate permanent magnets (PMs), a dual rotor consequent-pole vernier (DRCPVM) is proposed in this article. The stator has double-sided structure with two sets independent windings on each side. Therefore, different working modes according to on/off state windings. In design process, DRCPVM used as basic model optimization performed i...

We present a planar helical undulator designed to produce elliptically polarized light. Helical magnetic fields may be produced by a variety of undulatory with four parallel cassettes of magnets. In our design, all cassettes are mounted in two planes on slides so that they maybe moved parallel to the electron beam. This allows us to produce x-rays of left-or right-handed elliptical or circular ...

Recently designed dipolar Halbach magnets used in portable MRI systems are much lighter and more compact than standard permanent or superconductive magnets. However, improved designs manufacturing techniques aiming at lower weight smaller external size an area of continual interest especially for application to space flight. Most magnet design aim optimize homogeneity suitable over a diameter-s...

Hybrid subdomain analysis is utilized to optimize the design of a high-speed compressor motor. Permanent magnets (PMs) are arranged in Halbach array and bounded by carbon fiber sleeve. The stator core does not have slot structure, so that it advantageous reducing iron loss. Since saturation takes place, magnetic equivalent circuit (MEC) used find permeability depending on flux density yoke. Fur...

Electric machines with high torque density are needed in many applications, such as electric vehicles, robotics, ships, aircraft, etc. and they can avoid planetary gears thus reducing manufacturing costs. This paper presents a novel axial-radial flux permanent magnet (ARFPM) machine density. The proposed ARFPM integrates both axial-flux radial-flux topologies compact space, which effectively im...

A voice coil motor is a type of permanent magnet linear motor, which based on the Ampere force theorem. It has following advantages: simple structure, small size, no cogging force, and fast response time. In this study, was designed to provide x-directional thrust in magnetically levitated cable table lithography machine. The study Halbach array, adopted single-sided, coreless, flat-type struct...