Interface Design And Simulation Fault Detection Based On HST-DCSP

In order to numerically analyse the dynamic interaction among the maglev train,the bridge and the external field of air flow,simulate the dynamic response of the maglev train system,we always use ANSYS to establish the finite element model of the running structure and the finite element model of the track beam,use Simulink to construct the maglev and guidance control system model,then integrated them into Simpack to form the dynamic model of the maglev vehicle.At last,the aerodynamic model of the high-speed maglev train is established by CFD/FLUENT,and the coupling calculation technology of train aerodynamics and vehicle dynamics is developed.Finally,The high-speed maglev train aerodynamic calculation model and the dynamics model of the train system are integrated to construct a dynamic model of the maglev train-electric,fluid-solid and rigid-elastic coupling system.we should note that,althoug different softwares are very accurate in processing dynamics simulation in their respective simulation fields,their modeling methods and numerical calculations are also verified by a large number of project engineering,if you want to use their advantages to achieve the purpose of co-simulation,there would have some problems of incompatible versions and irregular interfaces.Moreover,different scholars have different research purposes,and the coupling relationship is often simplified,resulting in the failure of the simulation results.In order to solve the above problems,we develop the interface program between SIMPACK,ANSYS,FLUENT simulation software and HST-DCSP by means of the coupling characteristics of HST-DCSP,and send the real-time simulation data of the simulation software to HST-DCSP through the interface program.The coupler performs coordinated control to complete the co-simulation of high-speed maglev train dynamics.For the interface development between SIMPACK and HST-DCSP,MATLAB/SIMULINK and VS programming software are used to develop SIMPACK and HST-DCSP interface modules to achieve SIMPACK from the perspective of versatility,encapsulation and user operability.Interact with data from HST-DCSP.For the interface development between FLUENT,ANSYS and HST-DCSP,the compiled interface program is provided to the simulation software in the form of a plug-in for the user to call.Based on the simulation conditions of the vehicle-bridge-pneumatic three-coupling module of 600km/h,the real-time and step-by-step co-simulation of the train-bridge-pneumatic is completed by the interface program and the coupling characteristics of HST-DCSP.In addition,in the simulation process of high-speed maglev trains,Co-simulation error has occurred due to incorrect parameter settings.Because of the close coupling relationship between each simulation module,and the number of iterative simulations,if one of the simulation modules has a problem,the simulation module with its coupling relationship will iteratively calculate in the wrong direction.Therefore,if the fault can be predicted,the simulation condition can be terminated ahead of time to avoid wasting computing resources.This topic studies the coupling fault detection method,time domain fault analysis method,LSTM fault prediction method and CNN fault prediction method.Through the comparison between the feasibility of fault location and the accuracy of fault prediction,the CNN algorithm is used.The fault in the system simulation process is predicted.The CNN algorithm classifies and predicts the correct data and the data of the error module.It can accurately locate which simulation module has an error,stop the error simulation condition in time,and improve the simulation efficiency and increase the stability of the platform.The experimental results show that with CNN for fault classification and prediction,the accuracy can reach 99%,and unlike other fault diagnosis methods,it is necessary to analyze the simulation conditions after the simulation is finished.This method can solve the fault during the simulation.This paper first introduces the research significance,background and current situation of HST-DCSP interface design and simulation process,as well as the main content of the paper and the arrangement of the paper chapters.Next,the design and implementation of the interface modules of the three simulation modules are introduced in detail.Then,the faults in the simulation process and the measures taken are analyzed.Finally,the results of the simulation using the interface program and the test results of the fault prediction are introduced,and the work of the paper is summarized.The future research work is prospected.