A comparison of missile autopilot designs using H∞ control with gain scheduling and nonlinear dynamic inversion

We present two nonlinear controller designs for a bank-to-turn, air-to-air missile. The first controller is a gain-scheduled H_∞ design and the second is a nonlinear dynamic inversion design using a two time scale separation. We carried out a number of time and frequency domain analysis procedures on the resulting designs, and tested their performance on a nonlinear simulation of the missile. We compare the controller designs for nominal performance, robustness to uncertainties in the aerodynamic coefficients, and sensitivity to measurement noise.