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Reduction of the spatial harmonics of back electromotive force(EMF) is a useful way to reduce thrust ripple of permanent magnet linear synchronous motor (PMLSM). In this study, a method of v-skewing in the coils is proposed to reduce the harmonics to suppress thrust ripple in the PMLSM. The thrust and the harmonic are generated in a double-sided PMLSM model. The 3-D finite element method (FEM) is...
A power transformer operating in electric network is supplied by voltage source. When analyzing leakage flux and magnetic forces of the power transformer applied to windings, the field-circuit coupled 3D finite element method is needed because of the drawbacks of magnetic dipole model and 2D finite element method. The models were used for simulating and analyzing leakage flux and magnetic forces data...
There has been a growing interest of parallel mechanisms which offer a high degree of precision, stiffness and dexterity to name just a few of their benefits as opposed to their traditional serial counterparts. For the applications of parallel mechanisms in the field of sensor, previous work was focused on investigating the 6 degree-of-freedom force/torque sensors based on common Gough-Stewart platform...
In this paper, the topic studied comprehensively is based on the constant stiffness mechanism of a clamp plate installed on a Parawrist robot and the optimization of the manipulatorpsilas functionality. Currently situated at the Ryerson University, the Parawrist robot is used for mold polishing applications to provide a smooth surface for a finished product. The content of this research focuses on...
There is an increasing requirement, in a variety of fields, for the ability to make microscopic movements or to position items with high degree of accuracy. In this paper, a parallel mechanism with prismatic actuators which encompasses three degrees of freedom and can produce motion on a microscopic level is proposed and developed. In order to produce such motion, the mechanism is composed of compliant...
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