This paper proposes a design project of the dynamoelectric accelerograph control system of X-aeroengine oil pump modulator. It introduces the working principle and the design process of the control system, gives the connection between the angle displacement signalα and simulation voltage signal Ux, analyzes the process of computer controlling the step and realizes that the accelerograph knob controls the degree of accelerograph opening of the oil pump modulator. The experiment shows that the proposed design is effective in adjusting the degree of accelerograph opening and is of relatively high precision in adjustment.