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Detecting and correcting factory faults, cyberattacks in real time
In 2015, for example, hackers breached the control system in a steel mill in Germany and made it impossible for operators to properly shut down a blast furnace. "The idea is you have the physical manufacturing plant and the simulated model of the
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Frizzy Algorithms for Control gives an overview of the research results of a number of European research groups that are active and play a prime role in the field of fuzzy modeling and control. It contains 12 chapters divided into three parts. Chapters in the essential part address the position of fuzzy systems in control engineering and in the AI community. State-of-the-art surveys on fuzzy modeling and suppress are presented along with a critical assessment of the role of these methodologists in control engineering. The second part is concerned with several analysis and goal issues in fuzzy control systems. The analytical issues addressed include the algebraic representation of fuzzy models of separate types, their approximation properties, and stability analysis of fuzzy control systems. Several design aspects are addressed, including demeanour specification for control systems in a fuzzy decision-making framework and complexity reduction in multivariable fuzzy systems. In the third section of the book, a number of applications of fuzzy control are presented. It is shown that fuzzy control in combination with other techniques such as fuzzy data assay is an effective approach to the control of modern processes which present many challenges for the design of control systems. One has to cope with problems such as development nonlinearity, time-varying characteristics for incomplete process knowledge. Examples of real-world industrial applications presented in this soft-cover are a blast furnace, a lime kiln and a solar plant. Other examples of challenging problems in which fuzzy logic plays an important role and which are included in this reserve are mobile robotics and aircraft control. The aim of this book is to address both theoretical and practical subjects in a balanced way. It will therefore be useful for readers from the scholarly world and also from industry who want to apply fuzzy control in practice.
The Iron Blast Furnace
The Iron Blast Furnace: Theory and Practice presents theoretical, experimental, and operational evidence about the iron blast furnace as well as a mathematical description of its operation. This book includes a set of equations that accurately describe stoichiometric and enthalpy balances for the process and which are consistent with observed temperatures and compositions in the furnace stack. These equations, which have been devised on the basis of the Rist approach, show the effects of altering any blast-furnace variable on the other operating requirements of the process. This monograph is comprised of 14 chapters and begins with a brief description of the blast-furnace process. The next chapter takes a look inside the furnace, paying particular attention to its behavior in front of...
The project, which also involves researchers from the University of Illinois and Cornell University, aims to increase factory productivity and American competitiveness. Modern advanced manufacturing plants hold hundreds of software and hardware components. Their robots, conveyer belts, sensors, control systems and communication networks have intricately choreographed roles in a sector that yields 12 percent of the nation's GDP. But machine failures, operators' mistakes and, increasingly, cyberattacks can halt production—leading to expensive unscheduled downtime or potentially dangerous situations. In 2015, for example, hackers breached the control system in a steel mill in Germany and made it impossible for operators to properly shut down a blast furnace. The new project—made possible by a grant from the National Science Foundation—will yield "a revolutionary methodology for controlling manufacturing systems," the researchers say. Central to the new approach is a continuous, full simulation of the manufacturing plant. The team will produce this simulation and develop software that compares a plant's actual operation to what they'd expect based on the simulation. "The idea is you have the physical manufacturing plant and the simulated model of the plant so if there's a difference between the two, you can detect a fault or a cyber-intrusion," said project principal investigator Dawn Tilbury, associate dean... "The goal is to develop control systems for manufacturing systems that are secure and reconfigurable automatically. Such systems could reprogram how parts flow through the plant to avoid a faulty piece of equipment. "Our work aims to develop the science and enabling technologies to transform manufacturing systems from the current paradigm of low efficiency and high susceptibility to system disruptions to a new era of system-level anomaly detection,... "This will lead to less downtime, faster responses to disruptions and a more efficient manufacturing system. These are legitimate endeavors, but they can also be weak links in the cybersecurity of the system. As manufacturing systems become more complex and digitally connected, they become increasingly susceptible to disruptions that can cause significant financial losses. Department of Homeland Security investigated 97 cyberattacks at critical manufacturers during the fiscal year ending in June 2015, according to a report by its Industrial Control Systems Cybersecurity Emergency Response Team. Cyberattacks to manufacturing plants are a relatively new phenomenon. A more clear and present risk—and this one to the nation's economy—is that of unscheduled factory downtime. It's one of the most prevalent causes of inefficiency in manufacturing, the researchers say. "Manufacturing systems produce the vast majority of products in the modern world—automobiles, computers, textiles and toys, to name just a few," said Sibin Mohan, U of I research assistant professor of computer science. 'Improvements in the design and operation of manufacturing systems will have a huge financial and social impact on companies and consumers, and that's crucial to economic competitiveness. While the project focuses on discrete part manufacturing, the researchers say it translates well to semiconductor manufacturing and batch processes. "The work will combine techniques from multiple disciplines, spanning control theory, modeling of physical properties, machine learning, and cybersecurity, to detect and deter such attacks. The collaboration will be exciting as well as challenging," said Elaine Shi, associate professor of computer science at Cornell. This grant is one of three announced today through NSF's Frontier program, which aims to advance the state of the art in cyber-physical systems. "NSF has been a leader in supporting research in cyber-physical systems, which has enabled and accelerated multidisciplinary research in a number of application domains," said Jim Kurose, NSF's head of computer and information science and...
Blast furnace - Wikipedia, the free encyclopedia
A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally iron, but also others such as lead or copper.
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