Around Device Interaction (ADI) has expanded the interaction space on mobile devices to allow 3D gesture interaction around the device. In this paper, we look specifically at magnetbased ADI and its applied use in a playful, music-related context. Using three musical applications developed under the magnet-based ADI paradigm (Air Disc-Jockey, Air Guitar, Air GuitaRhythm), we investigate whether...

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...

Permanent-magnet-synchronous-machine (PMSM) drives have been increasingly applied in a variety of industrial applications which require fast dynamic response and accurate control over wide speed ranges. At the basis of analysis of the mathematical model of the permanent-magnet synchronous motor (PMSM) and the principle of field-orientated vector control, a novel method for modeling and simulink...

Magnets are widely used by arthritic patients for symptom control. Clinical benefits have been reported from the intermittent application 01 pulsed electromagnetic fields to osteoarthritic joi nts.’ However. puhl shed trials have used complex electromagnetic fields generated b eumhersomeexpensiveequipment. limiting true portability and widespread use. We report comparable beneficial effects usi...

The manufacturing of long lengths of Bi2Sr2CaCu2Ox (Bi2212) wire has led to the development of high-field magnets at low temperature. Both react-and-wind and wind-and-react manufacturing of magnets, however, have significant drawbacks that limit the performance of the conductor in magnet form. In this letter, an alternative approach to magnet manufacturing, react–wind–sinter, is proposed to avo...

This paper describes the optimum design of a permanent-magnet-assisted reluctance rotor of a 110 kW reluctance synchronous traction machine. Previous studies show that the performance of the pure reluctance synchronous machine drive deteriorates fast in the flux-weakening speed region. To address this problem, thin bonded permanent-magnet sheet material is used inside the flux barriers of the r...

A short-period in-vacuum undulator for the NSLS X-ray Ring has been developed in a collaboration between SPring-8 and the NSLS, and has achieved its project design goals during commissioning studies. The device is called IVUN (in-vacuum undulator) and employs magnet arrays (31 periods, with an 11 mm period) developed at SPring-8, while the requisite vacuum chamber and mechanical systems were de...

We developed an experimental protocol to analyze the behaviour of a model fiber-basedmagnetic grabber. A fiber is vertically suspended and fixed to the substrate by its upper end. A magnetic droplet is attached to the free end of the fiber and when a permanent magnet approaches the droplet, the fiber is forced to bow and finally jumps to the magnet. It appears that one can flex the micro-fibers...

We propose a new passive shimming strategy for variable-field NMR experiments, in which the magnetic field produced by paramagnetic shim pieces placed inside the magnet bore compensates the inhomogeneity of a variable-field magnet for a wide range of magnet currents. Paramagnetic shimming is demonstrated in (7)Li, (87)Rb, and (45)Sc NMR of a liquid solution sample in magnetic fields of 3.4, 4.0...

XFEL undulators for the TESLA project require high quality in order to drive the SASE process into saturation. On the other hand, as large quantities are needed for the five SASE undulators, it is rather important not to oversize the undulator design. The magnet structure is the most delicate and most expensive part of an insertion device. This report proposes a magnet design for a SASE undulat...