Abstract: In order to improve the attacking accuracy of the firing range test,an actuator roll control response model of the dual-spin trajectory correction projectile was built,to get the real-time control effect within the whole trajectory and evaluate the performance of different control algorithms and trajectory correction strategies.An actuator modeling method was proposed based on numerical simulation and experimental tests.The time-domain response characteristics under the step impact were recorded to conduct the transfer function analysis with the(inverse)Laplace transformation so that the dynamic electromagnetic torque model could be established.Based on experimental data in combination with the numerical simulation,the accurate aerodynamic and damping moment model was built,thus,the overall control response prediction model was established.It is shown by the roll control experiments in the wind tunnel that the established system model is able to predict the actual dynamic responding performance with a high degree of accuracy (less than 1.5%).The method for system modeling is proved to be feasible and provides an accurate and reliable analysis model for future research.