Fractional order robust controller design for hight speed attack unmanned air vehicle

High-speed attack UAV (HSAUAV) flight control system need to have the best command tracking performance, disturbance rejection performance and robustness, but the traditional PID controller has only one set of PID parameters, can not fully meet these design requirements. To solve this problem, the fractional order PID control technology is introduced in pitch control system design of HSAUAV, and in the fractional order PID controller design, Nelder-Mead´s simplex method is proposed. The simulation result shows that the designed pitch control system has good control qualities and robustness.