Article
Computer Science, Information Systems
Sam Maesschalck, Alexander Staves, Richard Derbyshire, Benjamin Green, David Hutchison
Summary: Cyber security risk assessments are crucial for understanding existing risk exposure, and the equal understanding of threat, vulnerability, and impact is essential. In Industrial Control System (ICS) environments, where technologies directly interact with the physical world, identifying vulnerabilities can be challenging. The presented work offers a tool, PLC-VBS, that helps identify vulnerabilities in Programmable Logic Controllers (PLCs), providing a more coherent picture of potential impacts.(c) 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license ( http://creativecommons.org/licenses/by/4.0/ )
COMPUTERS & SECURITY
(2023)
Article
Chemistry, Analytical
Ondrej Pospisil, Petr Blazek, Karel Kuchar, Radek Fujdiak, Jiri Misurec
Summary: The Industry 4.0 paradigm accelerates digitalization in the industry and blurs the line between IT and OT. The convergence between IT and OT in cybersecurity poses new challenges due to the lack of high-quality datasets.
Article
Computer Science, Information Systems
Xiaojun Pan, Haiying Li, Xiaoyi Li, Li Xu, Yanbin Sun
Summary: In this paper, a PLC protection system is proposed to enhance the security of industrial control systems by physically separating and separating identity verification from command verification. Experimental results show that even if the SCADA is controlled by an attacker, the system can still protect the PLC and record the identity of the operator.
CMC-COMPUTERS MATERIALS & CONTINUA
(2022)
Article
Automation & Control Systems
Oscar Briones, Ruben Alarcon, Alejandro J. Rojas, Daniel Sbarbaro
Summary: The proposed Generalized Predictive PI (GPPI) controller provides greater design flexibility and better performance compared to traditional PID and PPI controllers, with experimental results demonstrating significant improvements under real conditions.
Article
Chemistry, Multidisciplinary
Bernardo Anes, Joao Figueiredo, Mouhaydine Tlemcani
Summary: Prediction of stone block internal structure is crucial in the stone industry, and non-destructive tests like ultrasonic tomography and electrical resistivity tomography can enhance accuracy and efficiency. The novel approach proposed in this paper offers significant advantages over the current manual procedure, leading to substantial time savings and increased competitiveness in the stone sector.
APPLIED SCIENCES-BASEL
(2021)
Article
Computer Science, Information Systems
Marco Cook, Angelos Marnerides, Chris Johnson, Dimitrios Pezaros
Summary: With the increasing interconnectivity and automation of operational technology (OT) systems, the threat of cyber attacks on critical national infrastructure (CNI) sectors, particularly industrial control systems (ICS), has intensified. Unlike information technology (IT) systems, ICS have unique cyber-physical characteristics, making them attractive targets due to the potential physical consequences of attacks. The field of ICS digital forensics is under-developed compared to IT digital forensics, but its importance is growing in response to the increasing need to respond to and learn from attacks.
IEEE COMMUNICATIONS SURVEYS AND TUTORIALS
(2023)
Article
Energy & Fuels
Ahmed Kasapbasi, Huseyin Canbolat
Summary: This paper presents a control system solution for an electricity shortage in remote areas. It proposes the development of a system that supplies and distributes electrical power from sustainable energy sources, such as hydropower, wind power, and solar power. The control system, which includes a Supervisory Control and Data Acquisition (SCADA) system, manages the energy flow from multiple power sources and optimizes the utilization of generated power. The proposed system aims to provide continuous and reliable electricity to the load using sustainable energy sources.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2022)
Article
Automation & Control Systems
Wei Liu, Ping Wan, Jin Cheng, Yongheng Ma, Cheng Jing
Summary: This study investigates the application of a PLC intelligent control system based on OPC communication in improving the position accuracy and robustness of a belt drive system. It proposes a fuzzy adaptive PID control algorithm to perform self-tuning of tape speed and deviation rate. The research shows that compared with traditional PID control, this algorithm has lower overshoot and faster response speed.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Automation & Control Systems
Ishu Tomar, Indu Sreedevi, Neeta Pandey
Summary: This paper proposes the use of SCADA and PLC technology to enhance the performance of metro railway systems, providing real-time monitoring and control. It aims to minimize failures and integrate information from various systems. The proposed system overcomes the drawbacks of the current system and offers benefits such as increased service capacity and network flexibility.
INTELLIGENT AUTOMATION AND SOFT COMPUTING
(2023)
Article
Computer Science, Information Systems
Benjamin Green, Richard Derbyshire, Marina Krotofil, William Knowles, Daniel Prince, Neeraj Suri
Summary: Over the last decade, PLCs have increasingly become targets for attackers seeking control over critical industrial processes. Current PLC programming practices open up vulnerabilities that allow attackers to gain a higher level of process comprehension.
COMPUTERS & SECURITY
(2021)
Article
Thermodynamics
Zhilin Liu, Dongfang Sun, Bin Jiang, Limei Shen, Pei Zhou, Cai Gao, Zunlong Jin, Xiangnong Liu, Lei Yang, Shiyao Tan
Summary: This study establishes a temperature control system based on a microfluidic platform of double emulsion droplets, and attempts to achieve continuous gradient temperature control on the time scale of microfluidics using a thermoelectric cooler. By using adaptive fuzzy PID control, small gradient temperature control from 10℃ to -25℃ and large gradient temperature control from 20℃ to -20℃ are successfully realized.
APPLIED THERMAL ENGINEERING
(2023)
Article
Plant Sciences
Taoqing Yang, Xia Zheng, Hongwei Xiao, Chunhui Shan, Xuedong Yao, Yican Li, Jikai Zhang
Summary: A drying temperature precision control system was developed using an improved neural network proportional-integral-derivative (INN-PID) controller. The performance of the INN-PID controller was compared with PID and neural network PID (NN-PID) controllers through simulations and experiments. The results showed that the INN-PID controller had better control accuracy and regulation time in controlling the drying temperature. Additionally, the experiments demonstrated the effectiveness of linear variable-temperature (LVT) drying compared to constant-temperature drying in terms of quality preservation and reduced drying time and energy consumption.
Article
Chemistry, Analytical
Quan Bu, Jin Cai, Yuanyuan Liu, Mengjie Cao, Lili Dong, Roger Ruan, Hanping Mao
Summary: By utilizing the fuzzy PID control algorithm, faster response time and improved stability were achieved during biomass microwave pyrolysis, leading to lower thermal decomposition temperature and increased energy utilization efficiency.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Thermodynamics
Abdelkrim Kherkhar, Younes Chiba, Abdelhalim Tlemcani, Hayati Mamur
Summary: This study uses an experimental and numerical approach to evaluate the performance and efficiency of a thermoelectric cooler (TEC). The refrigeration system is designed using a semiconductor material and Arduino device. The system efficiency is investigated through the performance coefficient and temperature span for the carrier fluid. Proportional-integral-derivative (PID) control is used to maintain temperature control and heat transfer. The results show that the proposed control system can achieve a temperature error of 0.1 degree Celsius with minimal overshoot in less than 20 seconds.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Chemistry, Analytical
Krzysztof Zarzycki, Patryk Chaber, Krzysztof Cabaj, Maciej Lawrynczuk, Piotr Marusak, Robert Nebeluk, Sebastian Plamowski, Andrzej Wojtulewicz
Summary: This study focuses on the vulnerability of a network industrial control system to cyber-attacks, which is a critical issue in current times due to the potential damage they can cause. The attacks utilize LSTM neural networks to mimic dynamic processes, allowing the attacker to mislead the process operator without knowledge of the process's physical nature. Experimental studies were conducted on an industrial control network with a magnetic levitation process, including model training, evaluation, and structure selection. The chosen LSTM network successfully replicated the considered process. Finally, based on the findings, possible protection methods against these types of cyber-attacks were proposed.
Article
Education, Scientific Disciplines
Farzin Asadi, Nurettin Abut
Summary: This paper explores robust control of DC-DC converters using Kharitonov's theorem, offering a tutorial exposition on robust controller design based on this theorem. Kharitonov's theorem serves as a useful starting point for BSc students interested in pursuing further studies in robust control.
INTERNATIONAL JOURNAL OF ELECTRICAL ENGINEERING EDUCATION
(2021)
Article
Energy & Fuels
Kei Eguchi, Yutaka Kozono, Takaaki Ishibashi, Farzin Asadi
Article
Energy & Fuels
Kei Eguchi, Hiroto Abe, Takaaki Ishibashi, Farzin Asadi
Article
Energy & Fuels
Kei Eguchi, Ratanaubol Rubpongse, Akira Shibata, Takaaki Ishibashi, Farzin Asadi
Article
Energy & Fuels
Teerawat Thepmanee, Amphawan Julsereewong, Sawai Pongswatd
Summary: This article presents a safety system modeling approach to evaluate the unavailability of each safety function subsystem in a studied fuel gas supply system. The modeling includes probability of failure on demand (PFD) analysis for calculation of the unavailability, and provides guidelines for effective engineering design and operation.
Article
Energy & Fuels
Kei Eguchi, Daigo Nakashima, Wanglok Do, Takaaki Ishibashi, Farzin Asadi
Summary: This research presents a single inductor dc/dc converter for thermoelectric energy harvesting, incorporating a negative Dickson multiplier for high voltage gain and low power loss. Comparisons and experiments confirm the efficiency and performance superiority of the proposed topology.
Article
Energy & Fuels
Sawai Pongswatd, Krit Smerpitak, Farzin Asadi, Teerawat Thepmanee
Summary: This paper introduces a PLC-based system for controlling the SCR power module in an AC-DC converter, proposing a new technique to convert trigger signals into linear output voltage. The technique involves converting trigger signals using arccosine function and analog modules in the PLC for immediate signal transmission to the SCR power module. The article details hardware configuration, software operation, and monitoring testing, providing useful insights for applying PLC systems in traditional industries for semi-automatic or automatic control.
Article
Energy & Fuels
Farzin Asadi
Summary: This paper proposes a simple method to measure the reverse saturation current of diodes and calculates the emission coefficient using the forward biased region of the I-V characteristics. The model extracted using the proposed method shows good agreement with the I-V characteristics of the device under test in laboratory experiments.
Proceedings Paper
Engineering, Electrical & Electronic
Kei Eguchi, Akira Shibata, Takaaki Ishibashi, Farzin Asadi
Summary: A new LED sink driver topology is proposed in this paper, which achieves higher voltage gain, reduced component count, and simplified switching control by series connecting the negative hybrid Cockcroft-Walton/Dickson multiplier and buck-boost converter. The effectiveness of this topology was confirmed through theoretical analysis, computer simulations, and experiments, demonstrating higher power efficiency and smaller component counts compared to conventional drivers.
2021 IEEE THE 4TH INTERNATIONAL CONFERENCE ON POWER AND ENERGY APPLICATIONS (ICPEA 2021)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Kei Eguchi, Akira Shibata, Takaaki Ishibashi, Farzin Asadi
Summary: This paper proposes a new multiple-input single-output (MISO) ac/dc converter for vibration energy harvesting, achieving high voltage gains and inductor-less structure using hybrid multipliers. The characteristics of the proposed converter are analyzed theoretically and through SPICE simulations, confirming its performance in terms of power efficiency and output voltage. Breadboard tests further validate the effectiveness of the proposed MISO topology.
2021 IEEE THE 4TH INTERNATIONAL CONFERENCE ON POWER AND ENERGY APPLICATIONS (ICPEA 2021)
(2021)
Proceedings Paper
Energy & Fuels
Kei Eguchi, Akira Shibata, Wanglok Do, Farzin Asadi
Summary: A novel hybrid LED driver with high voltage gains is proposed in this paper, which can achieve flexible controllability of outputs. The characteristics and validity of the proposed topology are analyzed and confirmed through SPICE simulations and breadboard experiments.
2021 3RD ASIA ENERGY AND ELECTRICAL ENGINEERING SYMPOSIUM (AEEES 2021)
(2021)
Proceedings Paper
Energy & Fuels
Kei Eguchi, Daigo Nakashima, Wanglok Do, Farzin Asadi
Summary: This paper introduces a high voltage multiplier that achieves high voltage gains by stacking CWVMs. While conventional multipliers face issues of circuit components experiencing high voltage stress, the new multiplier can operate with high performance under low voltage stress.
2021 3RD ASIA ENERGY AND ELECTRICAL ENGINEERING SYMPOSIUM (AEEES 2021)
(2021)
Article
Energy & Fuels
Mokhtar Benasla, Imane Boukhatem, Tayeb Allaoui, Abderrahmane Berkani, Petr Korba, Felix Rafael Segundo Sevilla, Mohamed Belfedel
Summary: The idea of exporting dispatchable solar electricity from the North African region to Europe is still being discussed. This paper focuses on the potential of Algeria as a supplier and analyzes possible import corridors and barriers.
Article
Energy & Fuels
Hobyung Chae, Sangmu Bae, Jae-Weon Jeong, Yujin Nam
Summary: Thermoelectric generators (TEGs) utilize temperature differences to produce electricity and have potential for various industrial applications. This study introduces an advanced technique that utilizes temperature gradients in water pipes to increase power generation, with efficient modulation of output power through flow control. The feasibility evaluation in residential settings shows that TEGs can generate 10.95 kWh of electricity per unit, and to achieve zero-energy buildings, 64.5 m2 of TEG deployment is required per unit given a zT value of 1.
Review
Energy & Fuels
Lina Patricia Vega, Karen Tatiana Bautista, Heliana Campos, Sebastian Daza, Guillermo Vargas
Summary: This article focuses on the current situation of biofuel production and research development in Latin American countries such as Argentina, Brazil, Mexico, Chile, Costa Rica, and Colombia. Brazil stands out as a leader in the region, making significant advancements in clean energy production through biofuels policy implementation. The review highlights the challenges these countries face in utilizing their comparative advantages for biofuel production.
Article
Energy & Fuels
Iraj Faraji Davoudkhani, Mahmoud Rerza Shakarami, Almoataz Y. Abdelaziz, Adel El-Shahat
Summary: This paper presents an optimization-based method for designing a wide-area damping controller (WADC) based on remote signals to improve the damping of inter-area oscillations by considering the time delays. The grey wolf optimization (GWO) algorithm is utilized to solve the optimization problem, and simulations and statistical results demonstrate the superiority of the proposed method.
Article
Energy & Fuels
Majid Ahmed Mohammed, Bashar Mahmood Ali, Khalil Farhan Yassin, Obed Majeed Ali, Omar Rafae Alomar
Summary: This study compares the effects of different phase change materials on the performance of solar panels. The experiment shows that the use of beeswax can lower the temperature of the panel and increase the efficiency of the photovoltaic system.
