Control device for a wire erosion machine and control method for a wire erosion machine

A control apparatus for a wire erosion machine, the one interpolar average machining voltage detection unit 5, an interpolar average machining voltage between an electrode 3 and a workpiece to be processed 4, an interpolar average machining voltage correction unit 12 that corrects the detected from the interpolar average machining voltage detection unit interpolar average machining voltage, a target voltage storage unit 6 in advance a voltage setting which serves as a target value of the interpolar average machining voltage, storing a voltage calculation unit 7 that calculates a difference between the target voltage and an output of the interpolar average machining voltage correction unit 12, a machining speed control unit 8, a processing speed of the electrode on the basis of the calculated by the voltage calculation unit 7 Diff erence calculated, a drive controller 9 that controls a processing speed of the electrode in accordance with the calculated processing speed, a target speed storage unit 10 that sets a serving as a target value of the machining speed target speed in advance, and an inter-polar average machining voltage correction unit 12, the one on a difference between the machining speed and calculates a based on the target speed interpolar average machining voltage correction value, wherein the interpolar average machining voltage correction unit 12 corrects the interpolar average machining voltage in accordance with the interpolar average machining voltage correction value comprises.