Zenith blind zone is a phenomenon that the line of sight cannot track the target when the target maneuvers nearby the twoaxis turntable singular point. Firstly, the principle of the singular is explained in mathematical and physical ways. Secondly, the strategy of avoiding the turntable singular point and particular ways are expounded based on autonomous attitude path planning under the restriction of engineering. Thirdly, the hypothesis of the strategy is modeled and the error is estimated. Finally, the strategy is proved to be suitable for engineering application as expected by simulation.

The goldensection control is presented as the nominal controller for linear discretetime control systems of antiwindup design. The convex constructions by way of linear matrix inequalities (LMI) for antiwindup augmentation are formulated so that the stability of the closedloop system can be guaranteed. A numerical simulation illustrates the robustness and better control performance of the proposed approaches.

 A controller design for missiles with blended lateral jets and aerodynamic is presented,The mathematical model of attitude control system in the pitch plane is constructed,and the nonlinear system theory is applied to analyze the mode. A virtual controller is designed using adaptive higher order sliding mode based on simplified mode.A constrained quadratic programming formulation is constructed considering the rate and position limits of rudder and characristic of reaction jets. Using active set methods, control allocation problem is solved.Simulation results show the effectiveness of the proposed design,which can suit the blend actuator and track the command of overload.