  Conventional Sliding mode control and observation techniques are widely used
in aerospace applications, including aircrafts, UAVs, launch vehicles, missile
interceptors, and hypersonic missiles. This work is dedicated to creating a
MATLAB-based sliding mode controller design and simulation software toolbox
that aims to support aerospace vehicle applications. An architecture of the
aerospace sliding mode control toolbox (SMC Aero) using the relative degree
approach is proposed. The SMC Aero libraries include 1st order sliding mode
control (1-SMC), second order sliding mode control (2-SMC), higher order
sliding mode (HOSM) control (either fixed gain or adaptive), as well as higher
order sliding mode differentiators. The efficacy of the SMC Aero toolbox is
confirmed in two case studies: controlling and simulating resource prospector
lander (RPL) soft landing on the Moon and launch vehicle (LV) attitude control
in ascent mode.
