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As requirements in diagnosis for hybrid systems increase, more and more researchers concentrate on hybrid models. However, common visual modeling methods such as GME (General Modeling Environment) lacks of flexibility. There is no appropriate modeling method for hybrid systems in cases containing plenty of complex components. This paper proposes a new hybrid hierarchy model description method, LLSM...
In this paper, different types of planar permanent magnet array are studied by FEM, calculation and experiment. Then a variety of characteristic graphs are presented, conclusions obtained by analyzing these graphs will enable us to learn the arrays comprehensively and systematically. Starting with the standard Halbach array, then the effects of magnets size, Segment Numbers Per Pole, Magnet Shapes...
By analogy with Halbach permanent magnet (PM) array, a novel ironless trapezoid winding array (TWA) is designed to achieve a primarily single-sided and well sinusoidal magnetic field. After deriving the TWA's current density formula in Fourier series, via the magnetic vector potential we derive the analytical solution of its magnetic field, which is verified by ANSYS finite-element method.
The magnetic fields due to different planar Halbach permanent magnet (PM) array, including the 4 piece square array, stretched 8 piece square array and trapezoid array, are studied by analytic calculation method and FEM. On this basis, the magnetic forces over the magnet weight per array unit area are obtained. Then comparisons of above results indicate that the trapezoid array can provide the maximum...
In this paper, a novel high-precision planar magnetic levitation is proposed, which combines the advantages of Halbach PM array with the controllable maglev structure. For accurate motion control of the levitation the end-magnetic-field-effect on the stator windings is taken into account, thus the equivalent magnetic charge method is proposed to calculate the 3D end-magnetic-field and compared with...
In this paper, an analytical approach is presented to calculate the magnetic force between the mover and the stator of an electromagnetic planar actuator. The key is to use the coenergy method to calculate the force, in such a way that the stator current can be predicted properly to offer the accurate orientation and location for the real-time control of the high-precision planar actuator. The proposed...
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