MOTOR CONTROL DEVICE

Provided is a motor controlling device that allows appropriate startup of the motor within a short period of time irrespectively of a stopped posture of the rotor. At time of startup, a rotation controlling section for controlling a rotor R of a brushless motor M supplies power to an excitation coil of one phase among excitation coils of three phases limitedly for a predetermined time. An induced voltage measurement section measures an induced voltage generated in another excitation coil than the excitation coil to which the power was supplied and based on the result of this measurement, possibility/impossibility of startup is decided. Based on the result of this decision, an excitation coil of one phase among the excitation coils of three phases is set as a supply starting coil to which power is to be supplied first and forced commutation is carried out.