Smooth switching output tracking control for a class of linear time-varying systems: An LMI approach

This paper is concerned with the problem of smooth switching state feedback controller design for aircraft dynamic systems with multiple operating points. Based on the theory of robust control, a single state feedback controller which considers the pole placement requirements and smooth switching is constructed. With the constant controller, the closed-loop system can track a given reference signal with desired performance during the whole operating range. Furthermore, an important superiority of this presented method compared to traditional method is that the output chattering can be considerably reduced by the designed constant controller in the switching process when the flight condition changes. An example for autopilot design of a BTT missile is given to illustrate the effectiveness of the proposed approach.