4.8 Article

Wireless Time Sensitive Networking Impact on an Industrial Collaborative Robotic Workcell

Journal

IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
Volume 18, Issue 10, Pages 7351-7360

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TII.2022.3151786

Keywords

IEEE 802; 11 Standard; Synchronization; Wireless communication; Standards; Robots; Service robots; Wireless sensor networks; Collaborative robotics; IEEE 802; 11; wireless time sensitive networking (WTSN)

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In this article, a methodology and models for evaluating a time sensitive collaborative robotics application enabled by wireless time sensitive networking (WTSN) capabilities are described. A method for configuring WTSN scheduling to meet the application time budget and validating it in an industrial use case is also presented. The performance of key WTSN capabilities, including time synchronization and time-aware scheduling, over an IEEE 802.11 based network are implemented and characterized. The performance of the wireless network is correlated to the application performance of a collaborative robotic workcell.
In this article, we describe a methodology and associated models to evaluate a time sensitive collaborative robotics application enabled by wireless time sensitive networking (WTSN) capabilities. We also present a method to configure WTSN scheduling to meet the application time budget and validate it in a realistic industrial use case. We detail the methodologies for implementing and characterizing the performance of key WTSN capabilities, namely time synchronization and time-aware scheduling, over an IEEE 802.11 based network. We deploy the WTSN capabilities with a collaborative robotic workcell consisting of two robotic arms, which emulate a material handling application, known as machine tending. We further explore configurations and measurement methodologies to characterize application performance of this use case and correlate it to the performance of the wireless network.

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