To improve synchronizability of a biaxial drive control.

First and second servo drive control systems 40, 50 are formed so as to make the following operations conductable: feedback signals Xf, Yf are generated by adding/subtracting signals X, Y; front stage deviations E1f, E2f are obtained by subtracting the feedback signals Xf, Yf from command signals S1("2S"), S2("0"); the front stage deviations E1f is synchronously adjustingly inputted into the servo drive control system 50; and the front stage deviations E2f is synchronously adjustingly inputted into the servo drive control system 40.