公开(公告)号：EP1292007A3

公开(公告)日：2005-03-16

申请号：EP02019643.2

申请日：2002-09-03

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  Denso Corporation

发明人： Miyata, Hideki, Toyota Jidosha Kabushiki Kaisha ,  Hoshino, Akira, Toyota Jidosha Kabushiki Kaisha ,  Tomomatsu, Hideo, Toyota Jidosha Kabushiki Kaisha ,  Hori, Masashi, c/o Nippon Soken ,  Yamazaki, Hiromichi, c/o Nippon Soken ,  Tanaka, Hitoshi, c/o Denso Corporation

IPC分类号： H02P6/06 ,  H02P6/08 ,  H02P6/16 ,  H02P5/05

CPC分类号： H02P6/06 ,  H02P6/08

摘要： A method and an apparatus for controlling a synchronous motor (1), by reading an advance angle X of the rotor (102) upon excitation of the synchronous motor (S11), reading an actual rotating speed N of the rotor (S12), reducing the advance angle (S14) when the detected actual rotating speed is higher than a target value N moku (S13), and increasing the advance angle (S16) when the detected actual rotating speed is lower than the target value (S15), so that the rotating speed N is controlled to the target value N moku . The apparatus is available at a reduced cost with a reduced number of components, and its control circuit is small-sized.