Research on Backstepping Nussbaum Gain Control of Missile Overload System

The overload control of missile system is researched under the condition that the control direction is unknown. A nussbaum gain strategy is adopted to solve the unknown control direction problem for the linear model of missile motion of pitch channel . The backstepping technology and integral action are used to cope the system uncertainty. A novel type of control law, which is only consisted of overload signal and angle velocity of missile, is constructed and the stability of whole system is guaranteed by a whole Lyapunov function. The defect of the proposed method is that the dyanmic of control fin is not considered.