PROBLEM TO BE SOLVED: To enable a motor controller to correspond to an increase or a decrease of speed even when a sensorless and brushless motor is used, and to enable the cost to be reduced.SOLUTION: The motor controller is constituted as follows. A motor controlling part 60 rotates a spool 10 in the line-winding direction by a motor 12 using a two-pole, three-phase, sensorless and brushless motor. The motor controlling part 60 has a start-controlling part 65 and a rotation-controlling part 66. When the rotation phase can not be detected by the back electromotive current, the start-controlling part 65 starts the motor 12 by flowing a current to the three-phase coil in a prescribed order in a plurality of patterns according to the rotation phase of a rotor 17 by a rotation direction-determining part 64 until the rotor 17 rotates in the line-winding direction by one of a plurality of the patterns. The rotation speed-controlling part 66 flows current to one of three-phase coils 16b according to the rotation phase detected by the back electromotive current when the detection of the rotation phase is enabled.COPYRIGHT: (C)2012,JPO&INPIT【課題】センサレスのブラシレスモータを用いても、速度の増減に対応でき、かつコストを削減できるようにする。【解決手段】モータ制御部60は、2極3相のセンサレスのブラシレスモータを用いたモータ12により、スプール10を糸巻取方向に回転させる。モータ制御部60は、起動制御部65と、回転制御部66と、を備えている。起動制御部65は逆起電流により回転位相を検出できないとき、3相のコイルに回転子17の回転位相に応じた複数のパターンで所定の順に、回転方向判断部64が複数のパターンのいずれかで回転子17が糸巻取方向に回転するまで電流を流してモータ12を起動する。回転速制御部66は、回転位相が検出可能になると、逆起電流により検出した回転位相に応じて3相のコイル16bのいずれかに電流を流す。【選択図】図5
