Extracting Dynamics Matrix of Alignment Process for a Gimbaled Inertial Navigation System Using Heuristic Dynamic Programming Method

In this paper, with the aim of estimating internal dynamics matrix of a gimbaled inertial navigation system (as a discrete linear system), the discrete-time hamilton- jacobi-bellman (hjb) equation for optimal control has been extracted. heuristic dynamic programming algorithm (hdp) for solving the equation has been presented and then a neural network approximation for cost function and control input has been extracted to simplify the solutionof hjb. design process of the optimal controller shows that, we do not need to know the system matrix. this important issue and the convergence of the hdp algorithm to the optimal control policy makes possible the estimation of the internal dynamics matrix.