A three-tier redundant architecture for safe and reliable cloud-based CNC over public internet networks |
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Affiliation: | 1. University of South Alabama, AL, United States;2. Clemson University, SC, United States;3. Auburn University, AL, United States |
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Abstract: | Cloud-based CNC (C-CNC) is an emerging concept within Industry 4.0 where computer numerical control (CNC) functionalities are moved to the cloud and provided to manufacturing machines as a service. Among many benefits, C-CNC allows manufacturing machines to leverage advanced control algorithms running on cloud computers to boost their performance at low cost, without need for major hardware upgrades. However, a fundamental challenge of C-CNC is how to guarantee safety and reliability of machine control given variable Internet quality of service (e.g. delays), especially on public Internet networks. We propose a three-tier redundant architecture to address this challenge. We then prototype tier one of the architecture on a 3D printer successfully controlled via C-CNC over public Internet connections, and discuss follow-on research opportunities. |
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