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The Design of Intelligent Controller Based on Industrial Ethernet

Author: LuoXiangPing
Tutor: ZhaoYongSheng
School: Dalian Maritime University
Course: Control Theory and Control Engineering
Keywords: Intelligent Controller Industrial Ethernet EPA TCP / IP Embedded
CLC: TP273.5
Type: Master's thesis
Year: 2011
Downloads: 85
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Abstract


With the development of Ethernet technology to address the Ethernet communication deterministic, real-time, stability, and reliability issues, and be used in industrial control network to become the new hot spot of research in recent years. China has independently developed the EPA standard was officially included in the the fourteenth international fieldbus standard IEC61158 type. Intelligent controller is an important part of the the EPA control system of the main content of this paper is the design and realization of complete intelligent controller. First, the analysis of the development and status quo of the fieldbus and Industrial Ethernet, Ethernet features and characteristics of the industrial control network communication requirements, analysis feasibility of Ethernet for industrial control and fieldbus exist advantage. Research and learning intelligent controller design and realization of the key technologies involved in the process: the EPA Industrial Ethernet architecture, the TCP / IP protocol suite, as well as the characteristics of embedded and real-time operating system μC/OS- Ⅱ. Combined on The key technology research, analysis, as well as the characteristics of the intelligent controller, the overall design of the intelligent controller proposed. The smart controller functions include control and communication, this paper focuses on the communication part of the study. The main functions of the intelligent controller of data acquisition and processing, network communication via Ethernet communication interface with the upper and lower layers. Field device communication and the lower layer, to complete the control information and the measurement data to publish and receive; layer device communication with the upper layer network monitoring, configuration information and control commands received from the monitoring layer device, and the data information is submitted to the host computer for display update, in order to achieve remote monitoring. Suitable for field devices having different communication interfaces for data communication, but also increases the CAN communication interface 232 communication interface. Subsequently, the complete the intelligent controller hardware and software design and implementation. Intelligent controller core chip-based 32-bit ARM Cortex-M3 core microcontroller LM3S8962, hardware design complete peripheral interface circuit design, including: power supply module, switch the input and output modules, analog input module to Ethernet interface, CAN interface, RS232 interface and JTAG interface. The software is designed to complete the data collection and processing, as well as EPA communication protocol implementations. Finally, to complete the commissioning of the overall summary of the problems and shortcomings encountered in the analysis process.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Automatic control,automatic control system > Computer control, computer control system
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