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In the design of precise linear moving system, the electromagnetic force fluctuation must be controlled strictly to avoid damage to the load. This paper analyzes the cogging force of tubular linear permanent magnet motor, and presents methods to reduce it. The end component cogging force, which is the special character of linear motor, is reduced by optimizing the mover length. This method is verified...
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...
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