Two-dimensional Correction Fuze Magnetic Torque Motor and External Ballistic Model Series Simulation Method
A series simulation method for the trajectory and motor of two-dimensional trajectory correction fuze(PGK)based on Simulink was proposed to address the issue of the separation of the trajectory model and the motor model in the simulation of the two-dimensional trajectory correction fuse system,which made it difficult to reflect the power generation and control performance of motor at different speed of the full trajectory.Firstly,by analyzing the structure and function of the magnetic torque motor,a magnetic torque motor model based on Simulink was established.The motor model was combined with the angle control module to form a motor control model.The input was the motor speed,control PWM signal,and the output was the electromagnetic torque;Then,the motor control model was combined with the external ballistic model,and the external ballistic model generates the input signals required for the motor control model.The electromagnetic torque output by the mo-tor was used as the input of the external ballistic model,forming a series simulation model that combines the ex-ternal ballistic model and the magnetic torque motor model.The simulation analysis was conducted on the motor power generation performance and electromagnetic torque changes during the entire ballistic flight process,and the simulation results were consistent with the measured data.This model could also be used for optimizing the parameters of magnetic torque motors and their roll angle control,providing reference for the optimization of two-dimensional trajectory correction fuze prototypes.