Autopilot design based on robust LQR approach

Robust Servomechanism Linear Quadratic Regulator (RSLQR) is proposed to design a bank-to-turn (BTT) missile autopilot. The autopilot topology used is a state feedback algorithm representing a baseline control, designed using optimal control theory, and is augmented by robust servomechanism design model to further extend the performance and stability of the system. This paper presents the steps of the RSLQR design and analysis procedure and demonstrate them in designing a BTT missile autopilot at different values of pitch moment due angle of attack. The simulation results show the static unstable missile can be stabilized and achieved the desired performance using (RSLQR) approach.