Research On Fast Erection System Based On Accumulator Type Auxiliary Power Source

Missile launchers need to rotate the missile from the vertical to a certain angle,the vertical time has a great impact on the survival of the missile.In order to shorten the erection time to achieve fast erection of the missile,it is necessary to develop fast erection system.Because the root cause of the limitation of the vertical speed is that the vertical force is largest and the flow rate is limited due to the limited power of the system in the beginning of erection,this paper proposes the idea of using the accumulator auxiliary power source to supply the high pressure and large flow energy needed for the vertical initial stage and then smoothly connect and raised by the main hydraulic system to the required angle,and resulting in parameter matching and control strategy problems.This paper focuses on the research of fast erection system based on accumulator type auxiliary power source,the design principle and the key problem of parameter matching of sources and control switching strategy are proposed,and experimental platform for specific research object is set up,the rationality of parameter matching and the effectiveness of control switching strategy are proved by simulation and experiment.Accumulator-type auxiliary power source fast erection system has a great advantage in improving the speed and reducing the installed power.The contents of each chapter are summarized as follows:In chapter 1,the present research situation and development trend of fast erecting system of missile launching vehicle is summarized,and a new idea to solve the rapidity is put forward.The quick starting mode of accumulator auxiliary power + main power source is put forward by contrast analysis,and the research significance and difficulties of the subject are expounded.In chapter 2,the load,hydraulic system components?hydraulic system of the main power source and accumulator auxiliary power unit were modeled,and AMESim simulation model is established according to the fast erection system based on accumulator type auxiliary power source.In chapter 3,a fast erection system based on accumulator type auxiliary power source test rig was designed.According to the existing load parameters,the components of the hydraulic and control system were selected,the procurement and manufacturing of the system were com-pleted.Finally Lab VIEW interface and control procedures are conducted.In chapter 4,there is parameter matching problem in the fast erection system.The parame-ter matching problem arises because the use of auxiliary power source causes the main and aux-iliary power source in the switching need to be parameterized in order to make the energy con-nection smooth.The key of the parameter matching is to select the main and auxiliary power source parameters reasonably to ensure that the auxiliary power source to the main power source is excessive,the vertical arm does not produce back-off or back-off as small as possible while keeping the load fluctuation as small as possible and the settling time as short as possible.In this chapter,detailed simulation analysis and experimental verification are carried out to solve the question of parameter matching between the main and auxiliary power source,and the rapidity and power saving using auxiliary power source are studied in detail in comparison with the original system.In chapter 5,accumulator type auxiliary power source fast erecting system also has the problem of control switching strategy.Control switching strategy is to ensure the stability of the system when the system is in the open-closed-loop switching time.Because of the large flow of the auxiliary power source which the main power source can not provided,the closed-loop con-trol can not be realized.The closed-loop control is needed to make the erection process smooth and precise braking at a certain angle.This creates an open-close-loop controller switching problem in which the active power source operates.In order to make the load of the controller switch does not produce large pressure fluctuations and the stability time is short,the suitable switching strategy is needed.In this chapter,a detailed simulation analysis and experimental study are carried out,and a reasonable switching strategy is put forward.In chapter 6,the research contents and achievements of this paper are summarized and the future research work is prospected.