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Research to improve the performance of in-vehicle network systems has been conducted as a result of the gradual increase in the number of automotive applications that require a large amount of data (e.g., Advanced Driver Assistance System (ADAS), Infotainment, connected car, etc.). BroadR-Reach is a technique that is used to improve the performance of in-vehicle networks by enabling Ethernet communication...
Network-based control systems are becoming increasingly popular for industrial applications; however, in these systems, it is impossible to transmit a control command to multiple devices at the same time due to network latency. The network latency of each device varies depending on network topology, which makes synchronous control difficult. In order to address this problem, this paper proposes a...
This paper explains a method for migration from RS-485 to EtherCAT for the closed loop step motor drive. Since realtime Ethernet is an alternative for the low speed fieldbus that uses RS-485 or CAN, the low speed fieldbus based legacy system (e.g. RS-485 based motor drive) also needs to support real-time Ethernet. Therefore, migration from the low speed fieldbus to real-time Ethernet becomes more...
Mechatrolink-III is a real-time Ethernet protocol designed to achieve high performance with short cycle time. The Mechatrolink-III protocol includes five communication phases: synchronization, cyclic communication, retry communication, C1 master message communication, and C2 master message communication. These communication phases directly affect the cycle time of Mechatrolink-III. This paper analyzes...
Recently, the Real-time Ethernet based protocol has alternated a low speed fieldbus using RS-485 or CAN. To connect a low speed fieldbus and a real-time Ethernet, a gateway is an essential component. In this paper, we propose the seamless gateway for Mechatrolink III. The seamless gateway abstracts the network protocol (e.g. EtherCAT, PROFINET) and profile (e.g. CiA 402, PROFIdrive). Using the proposed...
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