基于NCUC-Bus现场总线的横机硬件控制平台的设计与实现

发布时间：2018-11-18 22:26

【摘要】：近年来，国内横机销量猛增，，市场缺口巨大。各横机生产厂商通过不断创新，横机控制技术不断创新，功能更加齐全，稳定性能更好，操作更加方便。本文结合横机的发展趋势，开发了一种基于总线结构、扩展性好的横机硬件平台。论文的主要研究内容有：研究了横机的控制任务需求，设计了基于现场总线的三层分布式横机控制系统总体结构。分析了横机控制系统通信实时性需求以及CAN总线通信技术的优缺点，提出了采用自主知识产权的NCUC-Bus(NC Union of China Field Bus)作为主控制层和机头控制层间的通信解决方案。选取高性能的ARM芯片作为硬件平台的控制核心，选用低功耗的外围器件，并设计了相应的接口电路。FPGA（Field-Programmable Gate Array）作为NCUC-Bus现场总线数据链路层的逻辑控制核心，集成裁剪后的通信协议，实现了可靠的数据传输。分析了机头执行元件的动作原理，设计了相应的驱动电路。分析了单机头双系统横机机头执行数据的格式，依托所开发的硬件平台，提出了分段式传输存储的应用层协议通信方案，保证了机头通信的实时性。研究了横机同步控制原理，设计了机头位置计算、通信周期补偿等控制模块，实现了机头执行元件的同步控制。搭建了实验测试平台，提出了基于FPGA的总线通信链路的调试方法，对通信链路的实时性及平台的手动和自动模式等控制功能进行了全面测试。开发的横机控制平台实现了横机的控制，编织了标准样件。达到了设计要求。
[Abstract]:In recent years, domestic flat machine sales soared, the market gap is huge. Through continuous innovation, flat machine control technology innovation, more complete function, more stable performance, more convenient operation. In this paper, a kind of hardware platform with good expansibility based on bus structure is developed according to the development trend of flat machine. The main contents of this paper are as follows: the control task requirement of the horizontal machine is studied, and the overall structure of the three-layer distributed control system based on the field bus is designed. This paper analyzes the real-time communication requirements of the flat machine control system and the advantages and disadvantages of the CAN bus communication technology, and puts forward a solution to the communication between the main control layer and the head control layer using the NCUC-Bus (NC Union of China Field Bus) with independent intellectual property rights. The high performance ARM chip is chosen as the control core of the hardware platform and the low power peripheral device is selected. The corresponding interface circuit. FPGA (Field-Programmable Gate Array) is designed as the logical control core of the NCUC-Bus fieldbus data link layer. Integration of the clipped communication protocol, the implementation of reliable data transmission. The operating principle of the head actuator is analyzed, and the corresponding driving circuit is designed. This paper analyzes the format of the execution data of single head and double system flat machine head, and based on the developed hardware platform, puts forward an application layer protocol communication scheme of segmented transmission and storage, which ensures the real time of the head communication. The synchronous control principle of the horizontal machine is studied and the control modules such as head position calculation and communication period compensation are designed to realize the synchronous control of the head executive element. The experimental test platform is built, and the debugging method of the bus communication link based on FPGA is proposed. The real-time performance of the communication link and the control functions of the platform such as manual and automatic mode are tested comprehensively. The flat machine control platform has realized the control of the flat machine and woven standard samples. Meet the design requirements.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP273

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