A blended controller of aerodynamic force and direct thrust is proposed for the characteristic body of kinetic kill
vehicles(KKV’s). This controller can make full use of the body lift force, which provides the normal acceleration along with
the divert motors. A control law based on the nonlinear disturbance observer is proposed. With the Lyapunov theorem, the
proposed controller can guarantee the stabilization of the closed-loop system. Some computer simulation examples show the
effectiveness and the feasibility of the suggested methods.
Key words：nonlinear disturbance observer；sliding mode