Research On Key Technologies Of Guidance And Control For Warship Hypersonic Missile

The warship hypersonic missile is a powerful weapon for attacking at sea,which has gradually become a dominant and decisive attacking force in the sea battle,and is a pillar for the navy to realize long-range precision attack.The advanced guidance and control system is the central nervous system of the warship hypersonic missile,whose performance determines the final hit accuracy of the missile,and it has a pivotal status and irreplaceable value in the warship missile weapon system.Only when the warship hypersonic missile has a guidance and control system with high precision,high reliability,strong generality,wide platform,and satisfying the overall combat technical index,can it achieve long-range precision strike.Therefore,the research on guidance and control technology of the warship hypersonic missile is of great value to the development of the warship hypersonic missile.Because of the characteristics of the warship hypersonic missile,including the complexity of the pre-launch motion,the strong nonlinearity,the strong coupling,the inaccuracy of the model,the constraint of the specific flight state,and the saturation of the actuator input,etc.,therefore,the research on the key technologies of guidance and control system with high precision and fast response and strong robustness under the above characteristics is of great significance to improve the performance of the warship missile weapon system.Therefore,based on the characteristics and development direction of the warship hypersonic missile,this paper analyzes the importance of its guidance and control system,and furthe puts forward the key technology.Aiming at the initial attitude alignment performance of the sins on the moving base of the warship hypersonic missile,and the control strategy of the missile under the condition of model parameter uncertainty,input saturation and state constraints,the paper studies the initial attitude alignment performance of the sins on the moving base of the sins.The main contents are as follows:(1)In this paper,the problem of initial attitude alignment for the warship hypersonic missile strapdown inertial navigation system in motion state is studied.Based on the traditional initial attitude alignment method of moving base,an improved initial attitude alignment method of multi-stage moving base is proposed,which is based on the two-velocity model.The proposed alignment method can not only solve the defects of theoretical model error and calculation error in the traditional alignment method based on external velocity information Vb aided initial attitude of moving base,it can also improve the drawbacks of the traditional multi-stage moving base alignment method,and improve the alignment accuracy without sacrificing the statistical characteristics.(2)The attitude control of the warship hypersonic missile under the condition of external disturbance and the uncertainty of the model is studied in this paper.Aiming at the pitch channel model of the warship hypersonic missile,based on active disturbance rejection control theory,the characteristic of the control system is improved by estimating and eliminating the total disturbance of the system,according to the system state,the parameters of ADRC can be adjusted.And the adaptive control method of missile attitude based on ADRC and BP neural network is proposed,the robustness and environmental adaptability of the missile control system are improved effectively.(3)The problem of trajectory tracking control for the warship hypersonic missile with model uncertainty,external disturbance,actuator saturation and flight state constraints is studied.The Longitudinal model of the warship hypersonic missile is transformed into a velocity and altitude subsystem based on functional decomposition,and the adaptive anti-saturation controller based on asymmetric barrier function is proposed.The proposed controller uses an asymmetric obstacle Lyapunov function to deal with the state constraint and keep the angle of attack within a certain range.At the same time,an auxiliary system is introduced to solve the problem of actuator saturation and avoid the "Differential explosion" caused by the complex differential of the virtual signal in the traditional backstepping control.