Design of optimal preview controller for terrain-following flight

摘要

We adopted optimal preview control methodology to design a terrain-following controller for a cruise missile. In this methodology, tracking errors and control increments are both considered in a quadratic penalty function. An augmented error system that involves future command inputs is built. Thus the preview control problem can be formulated as an optimal regulator problem. integrating the general optimal servo system with preview feed-forward compensations that respectively feed forward future command inputs and future disturbances produces an optimal preview servo system.