Adaptive Super-Twisting Sliding Mode Forward Tracking Guidance Law Considering Missile Body Characteristics

Abstract Aiming at the problem of forward tracking guidance munitions with missile body characteristics intercepting maneuvering targets, and to improve hit accuracy system, this paper proposes an adaptive super-twisting sliding mode algorithm considering impact first-order overload input saturation limitation. Firstly, nonlinear model system is made by kinematic relation for projectile-target, principle interception, characteristic body, Secondly, a finite time interference observer (FTIO) adopted accurately estimate in furthermore, slide control used design projectile body. Finally, results simulation indicate designed has better-hit accuracy.