Output-redefinition-based Variable Structure Control for Aerodynamic Missiles

In order to solve the non-minimum phase problem of the output of missile normal overload,an output-redefinition technique was adopted.The new output is redefined according to the missile normal overload and angle acceleration.The condition of minimum phase system was deduced.Considering the robustness of the output-redefinition technique,a variable structure control method to design the overload-control system for missile was adopted in order to improve the robustness.Finally,a simulation research was performed by taking an example.The simulated results prove the stability and the robustness of the overload-control system.