An object of the present invention is to realize a feedback control apparatus and an electrically driven power steering apparatus capable of safely continuing control operation even in the event of the occurrence of a soft error. A controller 202 of the present invention determines a d-axis target voltage Vd and a q-axis target voltage Vq, which are control values for controlling an output value of the electrically driven power steering apparatus on the basis of a d-axis error signal δId and a q-axis error signal δIq, which are input values. In this processing, in a period before the occurrence of the soft error, the controller 202 determines the d-axis target voltage Vd and the q-axis target voltage Vq by means of PID control that uses a current input value and a past input value. In a period after the occurrence of the soft error, the d-axis target voltage Vd and the q-axis target voltage Vq are determined by means of P control that uses a current input value but does not use a past input value. In a period after a lapse of the above period, the PID control is resumed.