Linear motor driving system and linear motor control method

摘要

In a linear motor, a driving device calculates a deviation between a position command from a controller and a position detected by a position sensor, a position controlling is performed calculating speed command to be utilized for speed controlling of the movable member based on the deviation and a position gain, a deviation is calculated at a time when the movable member enters a control area in which at least a part of the magnet portion opposes to the coil of the stator within an area of which position is detected by the position sensor, and the position of the movable member is back-calculated from deviation from the position command and the position command, and the position detected by the position sensor is corrected with the calculated position being as the position of the movable member at a time when the movable member enters the control area.