Research On The Prompt Explosion Erecting System With Large Inertia Based On Hybrid Drive Of Gas And Hydraulics

Many weapons, such as missile launchers, radar vehicles and bridge laying equipment, need to be erected when they work. Therefore, in order to enhance rapid response capabilities of equipment to win the priority, it is crucial for erecting equipment that has an excellent erecting system of fast erection, smooth movement and so on. Taking the missile launcher as an example, this paper propose the prompt explosion erecting system based on hybrid drive of gas and hydraulics, which solves the problems of slow erection and big power in traditional system. Then the system mathematical model is established and the control strategy is proposed. Meanwhile, the system is simulated to study the fast erection characteristics, power characteristics and energy characteristics. Finally, the throttle control system, frequency control system, accumulator assistant system and the proposed system are compared. The contents of each chapter are summarized as follows:In chapter 1, the key problems of current vertical system are analyzed and the domestic and international researches on erecting hydraulic systems are introduced. In addition, the researches and current application of gas assistant device are introduced. Finally, the meaning and contents of the paper study are presented.In chapter 2, the load model is established, and the variable frequency hydraulic system and gas device are designed. Then the work principle of hybrid system is analyzed and the basic parameters of hybrid system are calculated and chose.In chapter 3, mathematical models of hydraulic components and system are established, then initial conditions of gas device are chose and each chamber model of gas device is assured. Meanwhile, the simulation model is established through the software AMESim.In chapter 4, three layer control structures involving in the energy layer, control layer, and feedback layer are proposed aiming to the features of multi power source and multi-mode control in hybrid system. Energy layer determines the work ways of gas booster, the inverter and the proportional directional valve according to the current system state. The control layer controls the specific operation of gas booster unit, proportional directional valve, and inverter. And the feedback layer provides the speed signal and oil signal and so on to the energy and control layers for decision-making. At last, in order to solve the unstable problems when switching the controllers, the virtual track control strategy and the weighting factor control strategy are proposed, then the mechanism and principles of two strategies are clarified.In chapter 5, the gas auxiliary device performance, virtual tracking strategy and weighting factor strategy are simulated, then rapid characteristic, power characteristic, energy characteristic are analyzed. What’s more, the performances of the throttling speed control system, frequency control system, accumulator auxiliary power system, and gas auxiliary system are compared.In chapter 6, the contents of research work are summarized and some future study ideas are suggested.