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A novel eddy current damper with hybrid excitation is presented in this paper. The eddy current damper contains two hybrid excitation components and a moving conductor plate. The hybrid excitation component is consisted of primary coil, the primary iron core and permanent magnet. The conductor plate is sandwiched between two excitation components. Analyses of the proposed damper are conducted with...
This paper introduces three-type voice coil motors (VCMs) for nano-positioning system. These VCMs all consists dual-magnet stator and coil mover which is sandwiched between these two-layer magnets with different topology structures of the stators and movers. The motor structures, magnetic field distribution, thrust force and force ripple of these VCMs are studied and compared. Equivalent magnetic...
In order to improve operation performance of underwater vehicle anti-rotation propulsion system, a novel PMSM with Anti-rotation Dual rotor is proposed. It can be substantially simplify system structure, decrease volume and cost, moreover, improve reliability without brush and slip-ring. After the principles of operation, structure, and features are discussed, Design methodology is given. Both the...
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