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Thrust ripple, determined by the magnetic field, is a significant factor to affect the performance of linear motor system. This paper evaluates the effect of the two magnet shapes, rectangle shape and Halbach array, for the flat short secondary type permanent magnet linear synchronous motor (PMLSM). A novel design that makes the PM into a curved shape is presented. Then, each shape analysis is fulfilled...
Discontinuous primary permanent magnet linear synchronous motor (DPPMLSM) has many merits in long-stroke transportation, including vertical, horizontal, and slanted model system, however, detent force of DPMLSM is particularly troublesome requiring positioning accuracy specially at low speed region as well as of position control and is different from short primary type and short secondary type PMLSM...
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