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Sensors 2018, 18(5), 1428; https://doi.org/10.3390/s18051428

Implementation of Cyber-Physical Production Systems for Quality Prediction and Operation Control in Metal Casting

Department of Systems Management Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea
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Received: 27 March 2018 / Revised: 13 April 2018 / Accepted: 25 April 2018 / Published: 4 May 2018
(This article belongs to the Special Issue Design and Implementation of Future CPS)
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Abstract

The prediction of internal defects of metal casting immediately after the casting process saves unnecessary time and money by reducing the amount of inputs into the next stage, such as the machining process, and enables flexible scheduling. Cyber-physical production systems (CPPS) perfectly fulfill the aforementioned requirements. This study deals with the implementation of CPPS in a real factory to predict the quality of metal casting and operation control. First, a CPPS architecture framework for quality prediction and operation control in metal-casting production was designed. The framework describes collaboration among internet of things (IoT), artificial intelligence, simulations, manufacturing execution systems, and advanced planning and scheduling systems. Subsequently, the implementation of the CPPS in actual plants is described. Temperature is a major factor that affects casting quality, and thus, temperature sensors and IoT communication devices were attached to casting machines. The well-known NoSQL database, HBase and the high-speed processing/analysis tool, Spark, are used for IoT repository and data pre-processing, respectively. Many machine learning algorithms such as decision tree, random forest, artificial neural network, and support vector machine were used for quality prediction and compared with R software. Finally, the operation of the entire system is demonstrated through a CPPS dashboard. In an era in which most CPPS-related studies are conducted on high-level abstract models, this study describes more specific architectural frameworks, use cases, usable software, and analytical methodologies. In addition, this study verifies the usefulness of CPPS by estimating quantitative effects. This is expected to contribute to the proliferation of CPPS in the industry. View Full-Text
Keywords: CPPS; cyber-physical production system; big data; metal casting CPPS; cyber-physical production system; big data; metal casting
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Lee, J.; Noh, S.D.; Kim, H.-J.; Kang, Y.-S. Implementation of Cyber-Physical Production Systems for Quality Prediction and Operation Control in Metal Casting. Sensors 2018, 18, 1428.

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