Modeling Analysis And Simulation Of Three-Axis Stabilization Mass Moment Control Missile

The main research contents of this paper are the modeling and model simplification analysis of three-axis stabilized mass moment control missile.Establishing the center of mass movement and rotation around the center of mass kinetic equation according to Newton's laws of motion.The model is nonlinear, strong coupling and so on, in order to facilitate the design of control system, the model was necessary to be simplified.The simplification of equation of motion of mass is relatively simple. While the simplification of rotating around the center of mass kinetic equations is relatively more complex because the movement of mass within the missile. It is inputted sine signal to the position parameters of the mass moment within the missile, simulation experiment is conducted by changing the angular frequency of sinusoidal, and then analyzes the effect of velocity and acceleration of mass moment on the system. Simulation results demonstrate that when the velocity and mass acceleration changes in a certain range, we can accomplish the simplification of equation around the center of mass.According to the simplified model of the missile, the stability analysis of three-axis stabilized mass moment control missile is done on the support of Lyapunov theory. The system is departed into a fast and a slow subsystem with the application of separation of time scale.The nonlinear system of the control of the missile is designed with the dynamic inversion method, this method is proved feasible by the simulation experiment.In different initial conditions, according to the transformation of vision coordinate system, inertial coordinate system and the body coordinate system,adopt modified proportional guidance law to intercept the missile target in space the whole trajectory simulation on the simplified model given to do further verification, it made the engineering realization of mass moment control missile become possible.