煤炭销售铁路装车站自动控制系统

发布时间：2018-08-09 15:58

【摘要】：装车系统是煤炭销售的必备环节,能够将煤炭按照需求快速、安全、高效的装车对煤炭生产企业具有重要的意义。本文对国内外装车系统的现状进行了叙述,并分析各种装车系统的优势与不足;依据变频控制和内模控制理论,以枣矿集团蒋庄煤矿装车系统为背景,设计了一套煤炭装车站自动控制系统。该煤炭装车站自动控制系统融合了PLC控制技术、网络通信技术、传感器检测技术、变频控制和基于内模原理的PID控制策略,实现自动控制与人工操作控制的两种装车方式。本论文主要从以下几个方面进行了研究工作:(1)对自动控制系统构架进行设计,完成装车自动控制系统中PLC硬件系统设计、模块选型、传感器设备的选型等;完成了对被控设备的电气部分设计;实现利用动态电子轨道衡对列车装载量的动态称量;利用光电开关对列车车厢的定位检测;利用料位计实现对装载车厢煤位高度的检测。控制系统选择采用西门子S7-300系列PLC为程序控制核心,通过采用以太网技术、PROFIBUS-DP技术实现系统的通信网络构建。(2)将传统的PID控制策略与内模控制原理相结合,根据装车高度设定装载量模型,从而实现对绞车牵引速度的控制。为实现装载量与列车牵引速度精确配合,建立被控对象放料闸门的数学模型,采用基于内模原理的PID控制器,并实现参数整定;控制器调节闸门的开闭程度,从而实现对列车装载量连续、稳定的控制。(3)系统程序设计分为PLC程序设计与上位机监控界面设计。PLC控制程序利用STEP7 V13编程软件依据控制策略实现对控制系统的硬件组态、参数设置与程序块功能的实现。利用昆仑通态触摸屏作为上位机,采用MCGS软件设计上位机界面,监测并控制设备运行。经现场运行表明,本控制系统设置合理,能够有效的提高煤炭装车的效率和精度,节约生产成本,具有一定的应用价值和意义。
[Abstract]:Loading system is a necessary link in coal sales, and it is of great significance for coal production enterprises to load coal quickly, safely and efficiently according to the demand. In this paper, the current situation of loading system at home and abroad is described, and the advantages and disadvantages of various loading systems are analyzed, and based on the theory of frequency conversion control and internal model control, the loading system of Jiangzhuang Coal Mine of Zaozhuang Coal Mine is taken as the background. An automatic control system for coal loading station is designed. The automatic control system of coal loading station integrates PLC control technology, network communication technology, sensor detection technology, frequency conversion control and PID control strategy based on internal model principle, and realizes two loading modes of automatic control and manual operation control. This paper mainly from the following aspects of the research work: (1) the design of the automatic control system framework, the completion of the loading automatic control system PLC hardware system design, module selection, sensor equipment selection and so on; The electrical part of the controlled equipment is designed; the dynamic weighing of train loading is realized by using dynamic electronic rail scale; the position detection of train carriage is carried out by photoelectric switch; and the height of coal level of loading car is detected by level meter. Siemens S7-300 series PLC is chosen as the control core of the control system, and the communication network is constructed by using the Ethernet technology PROFIBUS-DP. (2) the traditional PID control strategy is combined with the internal model control principle. According to the loading height, the loading volume model is set to realize the control of the winch traction speed. In order to realize the accurate coordination between the loading quantity and the train traction speed, the mathematical model of the controlled object discharge gate is established. The PID controller based on the principle of internal model is adopted, and the parameter setting is realized, and the controller adjusts the opening and closing degree of the gate. In order to realize the continuous and stable control of train loading capacity. (3) the system program design is divided into PLC program design and PC monitor interface design. PLC control program uses STEP7 V13 programming software to realize the hardware configuration of the control system according to the control strategy. Parameter setting and implementation of block function. Using Kunlun open touch screen as host computer, MCGS software is used to design upper computer interface, monitor and control the operation of the equipment. Field operation shows that the control system is reasonable, can effectively improve the efficiency and accuracy of coal loading, save production costs, and has certain application value and significance.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TD67;TP273

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