Programmable Logic Controllers in the Context of Industry 4.0
Programmable Logic Controllers in the Context of Industry 4.0
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DOI：
10.1109/tii.2020.3007764
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发表时间：
2021-05
影响因子：
12.3
通讯作者：
Martin A. Sehr;Marten Lohstroh;M. Weber;I. Ugalde;M. Witte;Joerg Neidig;Stephan Hoeme;M. Niknami;Edward A. Lee
中科院分区：
文献类型：
--
作者：
Martin A. Sehr;Marten Lohstroh;M. Weber;I. Ugalde;M. Witte;Joerg Neidig;Stephan Hoeme;M. Niknami;Edward A. Lee
可编程逻辑控制器（PLC）是一个成熟的平台，广泛应用于整个工业自动化领域，但研究人员对此知之甚少。本文概述了这种做法的现状，解释了为什么这种固定的技术在整个行业中持续存在，并对当今基于PLC的自动化系统的主要编程风格的优点和缺点进行了批判性分析。我们描述的软件执行模式，在IEC 61131-3标准化松散。我们确定了改进的机会，这些改进将使日益复杂的工业自动化应用成为可能，同时加强安全性和可靠性。具体来说，我们提出了确定性，分布式编程模型，包括明确的时间，事件触发的计算，并提高了安全性。
Programmable logic controllers (PLCs) are an established platform, widely used throughout industrial automation but poorly understood among researchers. This article gives an overview of the state of the practice, explaining why this settled technology persists throughout industry and presenting a critical analysis of the strengths and weaknesses of the dominant programming styles for today's PLC-based automation systems. We describe the software execution patterns that are standardized loosely in IEC 61131-3. We identify opportunities for improvements that would enable increasingly complex industrial automation applications while strengthening safety and reliability. Specifically, we propose deterministic, distributed programming models that embrace explicit timing, event-triggered computation, and improved security.