Patent ID: 7388346
Filing Date: 2008-06-17
Classification: H02K,H02P

Abstract:
1. An adjustment method of rotor position detection of a synchronous motor, wherein a synchronous motor having a stator wound around a stator coil and a rotor provided with magnetic poles, and a rotational position detector having a sensor rotor fixed to said rotor and a sensor stator disposed opposite to the sensor rotor for detecting a rotational position of said rotor are provided, and wherein an amount of deviation between said rotational position of said synchronous motor determined from an output of said rotational position detector and an actual rotational position of said synchronous motor is adjusted, said method comprising: a step of detecting said amount of deviation during rotation of said synchronous motor; and a step of mechanically adjusting a relative position between said rotational position detector and said synchronous motor based on a detected value of said amount of deviation, wherein said mechanical adjustment for adjusting the amount of deviation of said rotational position detector is performed while said synchronous motor is stopped.