Electromagnetic Analysis of the ElectroDynamic Suspension with the Two Dimensional Finite Element Method
Recently the magnetic levitation vehicle has been studied actively. In Japan, the electro-dynamic suspension (EDS) has been studied. The EDS, however, has the disadvantages that the pulsation of the lift force occurs since coils on the ground are arranged intermittently and the construction cost become high since a number of coils are needed. In order to solve these defects, the EDS which has the lamination has been studied in Europe and America. These studies, however, assume that the lamination is infinite, although it is finite. This paper presents the electromagnetic analysis of the EDS which has the finite conductor with the two dimensional finite element method (2D FEM). Second, we calculate the characteristics of the EDS due to the difference of the form of the conductor. Third, we examine whether the 2D FEM is proper comparing the result of the 2D FEM with one of the general-purpose electromagnetic analysis software. Finally, the method and model of the two dimensional analysis taking the thickness of the conductor into account is presented.
Levitation Characteristics of Magnetically Suspended Vehicles Utilizing Continuous Conductive Sheets
In a magnetically levitated railway system with superconducting vehicular magnetic coil, short-circuiting ground coil, and a loop-type track, the magnetic field produced by ground coils is not uniform and therefore the lift force fluctuates as the train moves and the magnetic flux of the superconducting magnet fluctuates with time. The sheet-type track consists of continuous conductive sheets of aluminum or copper. The levitation characteristics of the sheet-type track have been analyzed so far by directly solving Maxwell's equation or by replacing the sheet current by an image current. In these analyses, it has usually been assumed that the sheet is infinitely or semiinfinitely wide. Until now, the levitation characteristics of a sheet-type track with finite width have been analyzed little. An analysis is given in which a ground sheet with finite width is replaced by a number of conductors with square cross section arranged in the running direction. Self- and mutual inductances of the conductors are taken into account in calculating the levitation characteristics. Calculated levitation characteristics of the sheet-type track are compared with those of the loop-type track.
FlowBrush: optical flow art
The depiction of motion in static representations has a long tradition in art and science alike. Often, motion is depicted by spatio-temporal summarizations that try to preserve as much information of the original dynamic content as possible. In our approach to depicting motion, we remove the spatial constraints and generate new content steered by the temporal changes in motion. Applying particle steering in combination with the dynamic color palette of the video content, we can create a wide range of different image styles. With recorded videos, or by live interaction with a webcam, one can influence the resulting image. We provide a set of intuitive parameters to affect the style of the result, the final image content depends on the video input. Based on a collection of results gathered from test users, we discuss example styles that can be achieved with FlowBrush. In general, our approach provides an open sandbox for creative people to generate aesthetic images from any video content they apply.