Braunschweig, Techn. Universiẗat, Diss., 1999.

Zugl.: Berlin, Techn. Univ., Diss., 2002 / Hergestellt on demand

Techn. University, Diss., 2002--Berlin.

The aim of this work is to implement a workplace that will simulate the network infrastructure of industrial automation protocols. In this work we focus on and perform analysis of industrial protocols ModBus, Profibus, Profinet, EtherCAT, CANopen. Furthermore, the network infrastructure with PLC with selected protocols will be operated. The output of the work will be a workplace that will be able to simulate real communication of two selected protocols between two and more devices. Another part of the work will be the simulation of three types of equipment occurring in an industrial environment.

The McTronX research group of the North–West University has over some years established a knowledge base in active magnetic bearing (AMB) systems. In 2009, an AMB system that met industrial standards in being robust, reliable and economical was developed by the research group. The digital control of the AMB system was implemented with the use of a dedicated single–board computer and communication hardware that interface with the motor drive electronics, power amplifiers and sensor drive units of the AMB system. A Xilinx® field programmable gate array (FPGA), connected to the single–board computer, was used to control the AMB system. The AMB system was designed to be used in a helium blower application and to form a basis for AMB and digital control research. A programmable logic controller (PLC) is connected to the controller to operate the AMB system. To establish communication between the PLC and the FPGA, the Fieldbus standard PROFIBUS DP was chosen as being a robust industrial standard communication protocol. To reduce the cost of the entire system, the need arose to implement the PROFIBUS DP protocol on the current FPGA of the system. This project involves the research, design, implementation, verification and validation of the PROFIBUS DP protocol on a Xilinx® Virtex©–5 FPGA. The PROFIBUS DP standard was researched, analyzed and developed in VHDL for the specific Xilinx® Virtex©–5 FPGA. The implemented protocol is used to establish a standardized PROFIBUS DP network between the PLC and the FPGA controller. Through simulation the basic protocol was tested and later implemented in the real–time environment. Intensive verification and validation was done to ensure that the developed protocol conforms to the robust PROFIBUS DP standard and simultaneously meet the requirements and specifications of the AMB control system. This dissertation documents the entire PROFIBUS implementation process, from standard analysis through to verification and validation of the developed protocol. In conclusion, the developed protocol is compared against a commercial off–the–shelf PROFIBUS PMC module. It was found that the VHDL–based PROFIBUS DP protocol not only competes well with the commercial PROFIBUS device, but also outperforms the device in various aspects. / Thesis (M.Ing. (Computer and Electronical Engineering))--North-West University, Potchefstroom Campus, 2011.

The McTronX research group of the North–West University has over some years established a knowledge base in active magnetic bearing (AMB) systems. In 2009, an AMB system that met industrial standards in being robust, reliable and economical was developed by the research group. The digital control of the AMB system was implemented with the use of a dedicated single–board computer and communication hardware that interface with the motor drive electronics, power amplifiers and sensor drive units of the AMB system. A Xilinx® field programmable gate array (FPGA), connected to the single–board computer, was used to control the AMB system. The AMB system was designed to be used in a helium blower application and to form a basis for AMB and digital control research. A programmable logic controller (PLC) is connected to the controller to operate the AMB system. To establish communication between the PLC and the FPGA, the Fieldbus standard PROFIBUS DP was chosen as being a robust industrial standard communication protocol. To reduce the cost of the entire system, the need arose to implement the PROFIBUS DP protocol on the current FPGA of the system. This project involves the research, design, implementation, verification and validation of the PROFIBUS DP protocol on a Xilinx® Virtex©–5 FPGA. The PROFIBUS DP standard was researched, analyzed and developed in VHDL for the specific Xilinx® Virtex©–5 FPGA. The implemented protocol is used to establish a standardized PROFIBUS DP network between the PLC and the FPGA controller. Through simulation the basic protocol was tested and later implemented in the real–time environment. Intensive verification and validation was done to ensure that the developed protocol conforms to the robust PROFIBUS DP standard and simultaneously meet the requirements and specifications of the AMB control system. This dissertation documents the entire PROFIBUS implementation process, from standard analysis through to verification and validation of the developed protocol. In conclusion, the developed protocol is compared against a commercial off–the–shelf PROFIBUS PMC module. It was found that the VHDL–based PROFIBUS DP protocol not only competes well with the commercial PROFIBUS device, but also outperforms the device in various aspects. / Thesis (M.Ing. (Computer and Electronical Engineering))--North-West University, Potchefstroom Campus, 2011.

Este trabalho propõe o desenvolvimento de um simulador de redes Profibus DP que reproduz o comportamento de uma rede real. A simulação de redes em condições de falha permite aos usuários experimental situações que podem ocorrer em instalações reais, facilitando o treinamento de manutenção e antecipando ações corretivas. O simulador permite o treinamento de usuários que utilizam ferramentas de diagnóstico. Auxilia no estudo do protocolo Profibus DP e também contribui com o desenvolvimento da ferramenta Profidoctor que é um sistema especialista com o objetivo de fazer a análise de problemas de rede. / This work aims development of Profibus DP network simulator that reproduces real network behavior. The network simulation under fault conditions allows experiment situations that may occur in real network installations, helping in maintenance training and corrective actions. This simulator tool helps in diagnostic tool users training, Profibus DP protocol learning and also assists development of new tool Profidoctor: an expert system that will report complete analysis of network problems.

Este trabalho propõe analisar o desempenho de redes de comunicação industrial em aplicações de acionamentos de motores elétricos trifásicos. Compara-se o desempenho da tecnologia Profibus DP em relação à Profinet. O desempenho é verificado a partir de especificações técnicas de ambos protocolos e experimentos práticos para coleta de dados e análise dos seguintes indicadores de desempenho: tempo de ciclo, jitter e ocupação de largura de banda. Adicionalmente, é verificado o desempenho de uma aplicação de controle de posição, utilizando estes protocolos na malha de controle, através do tempo de acomodação do sistema. Conclusões mostram que a rede Profibus DPV0 é a mais rápida quando possui menos dispositivos, porém o Profinet RT consegue manter baixos valores de tempo de ciclo mesmo com grande quantidade de dispositivos e possui maior determinismo na topologia em barramento. No que diz respeito ao controle de posição estudado, as tecnologias apresentam desempenho similar para tempo de acomodação do sistema, porém o Profinet IRT foi o mais determinístico. / This work proposes a performance analysis of industrial communication networks in applications of electric AC motor drives. It compares the performance of Profibus DP technology in relation to Profinet. Performance is verified from technical specifications of both protocols and practical experiments for data collection and analysis of the following performance indicators: cycle time, jitter and bandwidth occupation. Additionally, the performance of a motion control application is verified, by using these protocols in the loop control, through the settling time of the system. Conclusions show that Profibus DPV0 is faster when there is less devices in the network, but Profinet RT manages to maintain low values of cycle time even with large number of devices and has higher determinism when installed in line topology. Regarding the motion control application studied, the technologies have similar settling time for the system performance, but the Profinet IRT was more deterministic.

Este trabalho propõe analisar o desempenho de redes de comunicação industrial em aplicações de acionamentos de motores elétricos trifásicos. Compara-se o desempenho da tecnologia Profibus DP em relação à Profinet. O desempenho é verificado a partir de especificações técnicas de ambos protocolos e experimentos práticos para coleta de dados e análise dos seguintes indicadores de desempenho: tempo de ciclo, jitter e ocupação de largura de banda. Adicionalmente, é verificado o desempenho de uma aplicação de controle de posição, utilizando estes protocolos na malha de controle, através do tempo de acomodação do sistema. Conclusões mostram que a rede Profibus DPV0 é a mais rápida quando possui menos dispositivos, porém o Profinet RT consegue manter baixos valores de tempo de ciclo mesmo com grande quantidade de dispositivos e possui maior determinismo na topologia em barramento. No que diz respeito ao controle de posição estudado, as tecnologias apresentam desempenho similar para tempo de acomodação do sistema, porém o Profinet IRT foi o mais determinístico. / This work proposes a performance analysis of industrial communication networks in applications of electric AC motor drives. It compares the performance of Profibus DP technology in relation to Profinet. Performance is verified from technical specifications of both protocols and practical experiments for data collection and analysis of the following performance indicators: cycle time, jitter and bandwidth occupation. Additionally, the performance of a motion control application is verified, by using these protocols in the loop control, through the settling time of the system. Conclusions show that Profibus DPV0 is faster when there is less devices in the network, but Profinet RT manages to maintain low values of cycle time even with large number of devices and has higher determinism when installed in line topology. Regarding the motion control application studied, the technologies have similar settling time for the system performance, but the Profinet IRT was more deterministic.

Este trabalho propõe o desenvolvimento de um simulador de redes Profibus DP que reproduz o comportamento de uma rede real. A simulação de redes em condições de falha permite aos usuários experimental situações que podem ocorrer em instalações reais, facilitando o treinamento de manutenção e antecipando ações corretivas. O simulador permite o treinamento de usuários que utilizam ferramentas de diagnóstico. Auxilia no estudo do protocolo Profibus DP e também contribui com o desenvolvimento da ferramenta Profidoctor que é um sistema especialista com o objetivo de fazer a análise de problemas de rede. / This work aims development of Profibus DP network simulator that reproduces real network behavior. The network simulation under fault conditions allows experiment situations that may occur in real network installations, helping in maintenance training and corrective actions. This simulator tool helps in diagnostic tool users training, Profibus DP protocol learning and also assists development of new tool Profidoctor: an expert system that will report complete analysis of network problems.