WASHING MACHINE

PROBLEM TO BE SOLVED: To provide a washing machine capable of performing control with high accuracy by calculation with a small processing load without detecting a phase current of a motor.SOLUTION: In a washing machine of this embodiment, a control circuit performs what is called voltage phase control in which: an energization pattern is determined according to a position signal which is output by a plurality of position sensors as a result of detection of a rotor rotation position of a permanent magnet motor; an energization control signal is output to an inverter circuit; and control is performed in such a manner that, during washing or rinsing operation time in which the motor rotates forward/backward alternately, the phase of the energization pattern is advanced by a prescribed amount according to the rotational frequency of the motor detected based on the position signal. At that time, the control circuit detects the rotational frequency of the motor by output intervals of the position signal output from the plurality of position sensors respectively.