PERMANENT MAGNET LINEAR SYNCHRONOUS MOTOR WITH COMPENSATED INITIAL ELECTRICAL ANGLE AND METHOD FOR COMPENSATING INITIAL ELECTRICAL ANGLE

摘要

The present invention relates to the initial electrical angle is corrected permanent magnet linear synchronous motor, and the initial electrical angle correction method that prevents the displacement of the initial electrical angle setting the movable member occurs. A plurality of permanent magnets in the vertical direction is formed inside the elongated frame in the vertical direction is provided are arranged alternately in polarity. With the permanent magnet with a predetermined gap within the stator coil, between the two points on the current frame is received reciprocates linearly. The stator coil is coupled to the movable member, the movable member is movably supported by a guide portion which is provided extending vertically on the frame. The waiting position of the moving element prior to applying a current to the coil is in contact with the damping member provided on a lower end of the frame position, the coil is provided with a position to match the time of the first current is applied before the standby position and the current applied. The initial electrical angle correction method includes the steps of applying a current for the initial electrical angle set in the stator coil; Measuring an amount of displacement of the moving member; The step of returning the movable member to cut off the current and the coil portion to the standby position; And a step of changing the engagement position of the coil on the moving member in the moving direction of the coil by the displacement.