Study On Track Bed Synchronous Lifting Control System Of Non-ballasted Track On High Speed Railway

In recent years,high-speed railway has been developing rapidly due to its fast running speed,low energy consumption,safety and reliability,comfort and smoothness.However,the uneven settlement disease of high-speed railway non-ballasted track has become an important factor restricting the development of high-speed railway.In order to promote the better development of high-speed railway,this paper studies a large number of literature about the settlement of high-speed railway non-ballasted track.Through comparative analysis,it is found that although the repair settlement is required to restore the smoothness of non-ballasted track through various methods,there are many shortcomings such as long duration and manual interruption measurement.Therefore,further research is needed in the settlement of non-ballasted track on high-speed railway.The synchronous lifting control system of non-ballasted track on high-speed railway can monitor the lifting displacement of every point and the outlet flow of grouting equipment in the process of settlement repair,the data will be transmitted to the host computer.The controller adjusts the PWM duty cycle according to the host computer's command so as to control the outlet flow of the grouting equipment in real time and thus control the rate of ballast rise,and finally achieve that the uplift rate and uplift grouting process in real time can be measured,adjustable and controllable.The synchronous uplift control system of non-ballasted track bed is mainly studied in four aspects:(1)By referring to a large number of domestic and foreign literature,the general situation of settlement repair for high-speed rail non-ballasted track at home and abroad is summarized,and the main control strategy adopted at present is also studied;(2)The design of the overall structure of the control system.A synchronous grouting lifting technology is designed,and the overall scheme of the system is designed according to the construction technology.Then the whole scheme is analyzed,including the station plan,grouting execution system plan and monitoring scheme;(3)Selecting the appropriate synchronization control strategy.through the AMESim simulation software,the three control strategies of PID control electro-hydraulic proportional valve,fuzzy-PID control electro-hydraulic proportional valve and PID control strategy of PWM driven electromagnetic reversing valve are simulated and verified by simulation experiments;(4)System software and hardware design.The software and hardware design of master slave station PLC is introduced,especially the software and hardware design of slave station PLC and its expansion module,including program design process,I/O distribution and circuit connection,and the host computer monitoring interface is designed.