DRIVE DEVICE AND DRIVE METHOD FOR BRUSHLESS MOTOR

摘要

PROBLEM TO BE SOLVED: To cope with various drive conditions of a brushless motor, without electrically processing a current application signal. SOLUTION: When a user executes an operation such as reproduction, fast feed or the like of a tape, an operation control unit controls the turning on/off of a current applied to the plunger 13 of a displacement mechanism unit 17 according to the drive condition of a motor 1 suitable for each operation and displaces relative positions between position sensors 2u-2w and a stator 23. With this control, current carrying timings to respective phase windings which are given by current carrying signals Du-Dw outputted by a logic synthesizing unit based on position detection signals Hu-Hw outputted by the position sensors 2u-2w are changed by mechanical means.