Design And Development Of Railway Train Wisdom Door Control System

With the rapid and stable development of the national economy, the accelerated process of the urbanization and the growing population density, the problem of the urban traffic congestion is increasingly serious. Under the circumstances, the development of urban rail transit is strongly encouraged by our country. The Electric Door Control Unit (EDCU), whose reliability is relative to the passengers’personal safety, is one of the most vital components. The rail transit door control system is researched and a new generation of rail transit smart door control system is designed and developed in this dissertation.Firstly the research status of the rail transit door control system was concluded. Based on the defects of the existing rail transit EDCU and the demands of the smart door control system, the whole structure design which adopted the framework of "one controller and multi-driver" was proposed. For the defect of low reliability of the existing EDCU, a double CPU redundant and the hot standby technology based on the FPGA switching logic were proposed, which can improve the reliability to more than1.5times. As the characteristics of parameter uncertainty and nonlinear, the accurate mathematical model of the BLDCM cannot be established, therefore the fuzzy control technology which was optimized by the Genetic Algorithm was proposed. The simulation with the Matlab and Vissim indicated that the static and dynamic performance was greatly improved. Secondly, based on the STM32embedded development platform, the communication, storage, human-computer interaction and BLDCM driver module were designed to build the hardware platform of the smart door control system and the control software was designed on the Keil MDK to realize the related functions of the door control system perfectly. At last, the relationship of PWM value and load torque was tested on the test system and the operation, environment and the reliability were tested on the door test bench, the results showed that the smart door control system was running well and reached all the predetermined design targets.The rail transit smart door control system is designed and developed, the reliability and the static and dynamic performance are greatly improved, and new ideas for the further improvement of the rail transit door control system are developed.