Design And Simulation Of An Unbalanced Barrel Follow-up Control System Based On Pressure Loop Control

With the increasing demand for artillery launch accuracy and range and other military strike capabilities,the caliber and aspect ratio of artillery barrel are increasing,which makes the influence of non-equilibrium characteristics of artillery barrel on the performance of the system more serious.Aiming at the problem of positioning and balancing of gun barrel,this paper presents a precise positioning control strategy based on the pressure loop control by drawing lessons from the three loop control structure of the AC servo system and taking the unbalanced body tube electro-hydraulic servo system as the research object.Firstly,the unbalanced body tube electro-hydraulic servo system is designed,and the components of the system are selected and introduced in this paper.Based on this,a pressure loop control method is put forward.The model of the servo control system is established,and the nonlinear factors that influence the balance of gun barrel are analyzed in detail.Then,a RBF Neural Network Adaptive Sliding Mode Control strategy based on Disturbance Observer is proposed for the pressure loop controller.Due to the equivalent control term of Sliding Mode Control has many uncertain time-varying terms,it is approached by RBF Neural Network Adaptive system.Meanwhile,RBF Neural Network is used to dynamically adjust the switching gain of Sliding Mode Control,so as to eliminate chattering phenomenon of Sliding Mode Control.In order to further improve the anti-interference ability of the system,the Disturbance Observer is introduced,and the Matlab Simulation of the whole pressure loop controller is carried out.What's more,a Fuzzy Adaptive Sliding Mode Control strategy for the position loop controller is designed in detail,the nonlinear term on the Sliding Mode Control is approximated by using the Adaptive Fuzzy system.Aiming at the chattering of Sliding Mode Control,the Fuzzy System is used to dynamically adjust the switching gain,and the Simulation of position loop controller based on Matlab is carried out.Finally,the overall control strategy is verified by building a semi-physical simulation experiment platform.The results show that the control scheme designed in this paper can not only satisfy the performance index of the gun control system,but also effectively improve the control accuracy and response speed of the system.