NDLI: Develop Real-Time Robot Control Architecture Using Robot Operating System and EtherCAT

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Develop Real-Time Robot Control Architecture Using Robot Operating System and EtherCAT

Content Provider	MDPI
Author	Chuang, Wei-Li Yeh, Ming-Ho Yeh, Yi-Liang
Copyright Year	2021
Description	This paper presents the potential of combining ROS (Robot Operating System), its state-of-art software, and EtherCAT technologies to design real-time robot control architecture for human–robot collaboration. For this, the advantages of an ROS framework here are it is easy to integrate sensors for recognizing human commands and the well-developed communication protocols for data transfer between nodes. We propose a shared memory mechanism to improve the communication between non-real-time ROS nodes and real-time robot control tasks in motion kernel, which is implemented in the ARM development board with a real-time operating system. The jerk-limited trajectory generation approach is implemented in the motion kernel to obtain a fine interpolation of ROS MoveIt planned robot path to motor. EtherCAT technologies with precise multi-axis synchronization performance are used to exchange real-time I/O data between motion kernel and servo drive system. The experimental results show the proposed architecture using ROS and EtherCAT in hard real-time environment is feasible for robot control application. With the proposed architecture, a user can efficiently send commands to a robot to complete tasks or read information from the robot to make decisions, which is helpful to reach the purpose of human–robot collaboration in the future.
Starting Page	141
e-ISSN	20760825
DOI	10.3390/act10070141
Journal	Actuators
Issue Number	7
Volume Number	10
Language	English
Publisher	MDPI
Publisher Date	2021-06-24
Access Restriction	Open
Subject Keyword	Actuators Industrial Engineering Robotics Robot Operating System Ethercat Robot Control Motion Planning Jerk-limited Trajectory Real-time Motion Control
Content Type	Text
Resource Type	Article

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