Optimal Control Model of Two Dimensional Missile Using Forward Backward Sweep Method (FBSM)

Indonesia is an archipelagic and maritime country, so it is imperative to improve the country's aerospace technology, that is, the main equipment of defence system to defend the state sovereignty. One example is a missile that can be remotely controlled. Missiles are military rocket weapons with automatic control system to trace targets or follow direction. One of the missile technologies currently being developed is the optimal control of missile. The application of optimal control by Forward Backward Sweep Method (FBSM) method can be used for missile model consisting of flight angle, speed, horizontal position, and altitude with thrust force as control. FBSM uses state variable and adjoint variable in its computation. Then, FBSM updates the control by current control and new control. Based on the simulation results, the comparison between the missile model with thrust force control and without thrust force control are obtained. The flight angle with control produces smaller deviation than the flight angle without control. The altitude with control produces increasing trajectory while the altitude without control produces decreasing trajectory.