Predictive attitude controller for under-actuated reentry vehicle

Using only two body flaps to control the attitude of the reentry vehicle, belonging to under-actuated system, probably lead to unstable internal dynamics in lateral movement. In order to solve the problem, based on using output-redefinition to stabilize internal dynamic, a predictive controller is put forward to make the tracking error between next states and next standard command to be minimum, so as to achieve the optimal controller. The simulation result shows that controller performances very well, and the precision of the predictive algorithm is superior to the inverse dynamic controller.