Control System Design for Reentry Warhead with Mass Moment Compound Actuate
A variable structure control system is designed for the reentry warhead with mass moment compound actuate.The roll is subject to moving-masses movement and asymmetric ablation and erosion experienced by aerodynamic in reentry process.In order to curb these interferences,roll control law is design by using of time optimal with sliding mode,the problem of switch high frequency is solved by constructing two switch functions and switching continuous control law near the equilibrium point.To overcome the interference on warhead result from mass movement,the pitch and yaw attitude control law are designed by using variable structure control method based on the layout optimization of masses.Simulation results are presented which show that the feasibility of proposed method in this paper.
The reactor pressure vessel FE model with 42 M88 bolts is built in this study by ADVEN-TURECluster.These 42 bolts are divided into seven groups,and there are two steps in the bolt-up process.The simulation results show that every bolt-up step will make different influence to different groups of bolts.