Article
Automation & Control Systems
Jitao Li, Zhenhua Wang, Yi Shen, Lihua Xie
Summary: This article discusses the security issues of cyber-physical systems against stealthy attacks and proposes a vulnerability characterization method based on zonotopic model. By quantifying the potential impact and measuring the level of vulnerabilities, the effectiveness of the proposed method is demonstrated through numerical simulations.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2022)
Article
Automation & Control Systems
Dina Mikhaylenko, Ping Zhang
Summary: This article introduces a new attack strategy called local covert attack, which can be made completely stealthy by applying decoupling technique or by combining basic idea of covert attack and zero-dynamics attack.
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
(2022)
Article
Computer Science, Information Systems
Wen-Jye Shyr, Hou-Chueh Juan, Chih-Yu Tsai, Yu-Jia Chang
Summary: With advances in technology, manufacturing production methods have made significant progress. It is important to examine whether the design meets the actual need before implementing the production process. By applying cyber-physical system technology, development problems in the actual construction can be avoided and integrated with existing components through innovative integration.
Article
Automation & Control Systems
Kang-Di Lu, Zheng-Guang Wu, Tingwen Huang
Summary: This article proposes a novel three-stage dynamic false data injection attack (DFDIA) model in cyber-physical power systems (CPPS) by considering potential dynamic behaviors. It formulates the designing DFDIA as two constrained single-objective optimization problems and presents two versions of constrained differential evolution as solvers. It also proposes an interval state forecasting-based countermeasure to detect the established DFDIA and demonstrates their feasibility and effectiveness through extensive simulation experiments on IEEE bus systems.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2023)
Review
Construction & Building Technology
Peixian Li, Yujie Lu, Da Yan, Jianzhuang Xiao, Huicang Wu
Summary: The paper reviews the state-of-the-art smart building research through bibliometric analysis, content analysis, and qualitative review. It reveals that smart building is an interdisciplinary field with high international collaboration, focusing on IoT, cloud computing, and human needs. The transition from CPS to HCPS framework in smart building research is detected, leading to future research directions centered around occupants' needs.
AUTOMATION IN CONSTRUCTION
(2021)
Article
Computer Science, Information Systems
Xin Lu, Ruochen Dong, Qing Wang, Lizhe Zhang
Summary: This paper studies the basic theories and key technologies of ATM information security assurance, designs a credible security architecture, and provides comprehensive and systematic security assurance for networked ATM. The paper investigates the dynamic and complex data processing process of the ATM system, analyzes the complex interaction between its cyber and physical systems, and constructs the networked ATM cyber-physical fusion system model and threat model. Furthermore, it proposes a game model of networked ATM using a Bayesian Nash equilibrium strategy and establishes an information security assurance architecture based on blockchain technology.
Review
Chemistry, Multidisciplinary
Sangjun Kim, Kyung-Joon Park
Summary: A cyber-physical system is the integration of physical systems into the real world and control applications in a computing system, with network technology enabling simultaneous control of many physical systems but also increasing attack vectors. Studying cyber-physical security is crucial as large, complex CPSs pose challenges for analysis and detection, leading to the adoption of machine learning techniques for security. Extensive research on ML-based cyber-physical security is needed for real-time constraints, resiliency, and dataset generation to counter potential attacks.
APPLIED SCIENCES-BASEL
(2021)
Article
Automation & Control Systems
Shimeng Wu, Hao Luo, Yuchen Jiang, Jiusi Zhang, Jilun Tian, Shen Yin
Summary: This article proposes a data-driven unsupervised defense scheme for nonlinear systems, which decomposes data into two subspaces and achieves secure transmission by hiding dynamic-related information and transmitting dynamic-independent information plaintext. The scheme can detect both nonstealthy and stealthy attacks simultaneously, and comparative experiments demonstrate its high detection accuracy and excellent encryption capability.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2023)
Article
Automation & Control Systems
Atefeh Termehchi, Mehdi Rasti
Summary: This article focuses on an industrial CPS with multiple control plants and rate constrained users communicating over a single-cell orthogonal frequency-division multiple access network. A multiobjective mixed integer nonlinear optimization problem is formulated to determine the next maximum acceptable sampling moment of control plants while minimizing energy usage. A decoupling approach leads to a Pareto solution, reducing total power consumption in the CPS significantly as shown in simulations.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2021)
Article
Chemistry, Analytical
Deepak Garg, Shalli Rani, Norbert Herencsar, Sahil Verma, Marcin Wozniak, Muhammad Fazal Ijaz
Summary: New technologies and trends in industries have enabled the distributed establishment of Cyber-Physical Systems (CPSs) for smart industries. However, security is a major challenge for commercial CPSs due to their combination of the cyber world and the physical layer. In this paper, a novel data security algorithm called Dynamic Hybrid Secured Encryption Technique (DHSE) is proposed, utilizing a hybrid encryption scheme. The proposed algorithm effectively protects data confidentiality with minimal encryption and decryption time, making it well-suited for CPS-IoT.
Article
Engineering, Industrial
Huitaek Yun, Martin B. G. Jun
Summary: Smart manufacturing drives the need for new interfaces to facilitate communication between autonomies such as big data analysis, digital twin, and self-decisive control. This study proposes a human interface framework based on virtual reality (VR) for cyber-physical systems, enabling collaboration between humans and autonomies, and its effectiveness has been demonstrated.
JOURNAL OF MANUFACTURING SYSTEMS
(2022)
Article
Energy & Fuels
Yuchen Fang, Xiafei Tang, Li Tang, Yang Chen, Weiyu Wang
Summary: This paper proposes a local evolution model of communication networks based on the physical power grid topology, and models the construction and upgrading of information nodes and links using reconnection probabilities. The power flow entropy is used to determine the self-organized state of the power system and the high probability of cascading failures. The analysis of a practical provincial power grid demonstrates that the ability of the power system to resist cascading failures can be improved by the local growth evolution model.
Article
Automation & Control Systems
Wenli Duo, Meng Chu Zhou, Abdullah Abusorrah
Summary: A cyber physical system integrates sensing, computation, control, and networking into physical processes and objects, playing a key role in modern industry. This paper surveys the state-of-the-art results of cyber attacks on cyber physical systems, discussing attack and defense strategies, as well as future challenges and open issues.
IEEE-CAA JOURNAL OF AUTOMATICA SINICA
(2022)
Article
Automation & Control Systems
Tianyang Cai, Tao Jia, Sridhar Adepu, Yuqi Li, Zheng Yang
Summary: With the widespread innovation of IoT, SDN, and cloud computing, cyber-physical systems (CPSs) have been developed to facilitate daily life and economy. However, the shutdown of critical CPSs and the increasing threat of DDoS attacks pose serious consequences. This article presents an adaptive DDoS attack mitigation scheme called ADAM, which combines information entropy and unsupervised anomaly detection methods to accurately detect and mitigate DDoS attacks. Experimental results show that ADAM has a high accuracy in mitigating DDoS attacks and reduces the false-positive rate compared to similar work.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2023)
Article
Physics, Multidisciplinary
Pengchun Rao, Xiufeng Guo
Summary: This paper studies the finite-time synchronization problem of a Kuramoto-oscillator network with a pacemaker. By constructing a cyber-physical system (CPS), the finite-time phase agreement and frequency synchronization of the network are explored for identical and non-identical oscillators, respectively. Sufficient conditions are deduced for ensuring the phase agreement and frequency synchronization for arbitrary initial phases and/or frequencies under distributed strategies, and upper bound estimations of convergence time are obtained accordingly.
FRONTIERS IN PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Hajime Takayama, Takafumi Okuda, Takashi Hikihara
Summary: The paper proposes a digital active gate driver for SiC power MOSFETs, which can achieve high-frequency switching while avoiding surge voltage and ringing; By designing a multibit gate signal sequence, the gate-source voltage waveform of the MOSFET can be flexibly generated.
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS
(2022)
Article
Energy & Fuels
Shota Yumiki, Yoshihiko Susuki, Yuta Oshikubo, Yutaka Ota, Ryo Masegi, Akihiko Kawashima, Atsushi Ishigame, Shinkichi Inagaki, Tatsuya Suzuki
Summary: This article presents a system-level design for providing Ancillary Services (AS) for electric power grids control using in-vehicle batteries, specifically applied to Electric Vehicles (EVs) in a sharing service. It introduces an architecture for cooperation between transportation and energy management systems, enabling the design of an autonomous Vehicle-to-Grid (V2G) system for multi-objective AS provision. The effectiveness and feasibility of the design are evaluated through numerical simulations and hardware-in-the-loop testing.
SUSTAINABLE ENERGY GRIDS & NETWORKS
(2022)
Article
Mathematics, Interdisciplinary Applications
Haruki Tadano, Yoshihiko Susuki, Atsushi Ishigame
Summary: This paper addresses the problem of assessing voltage phasors in AC power distribution grids. The authors derive an asymptotic characterization of the solutions through regular perturbation method, enabling a quantitative and physically interpretable approach to assess the impact of DERs on the spatial profile of distribution voltage.
IEICE NONLINEAR THEORY AND ITS APPLICATIONS
(2022)
Article
Mathematics, Interdisciplinary Applications
Shiu Mochiyama, Kazuhiro Koto, Takashi Hikihara
Summary: In this paper, a power packet dispatching system for smart power management is proposed, and the routing optimization of power packets on the power router network is discussed. A cost metric for power packet delivery is proposed through circuit analysis, and the optimization problem is formulated as a general shortest path problem. The numerical simulations confirm that the proposed algorithm can effectively allocate distributed power sources and identify the optimal power delivery path.
IEICE NONLINEAR THEORY AND ITS APPLICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Shuhei Fukunaga, Hajime Takayama, Takashi Hikihara
Summary: This paper presents an experimental validation of a fully digitalized active gate driver for suppressing the switching surge voltage of SiC MOSFETs in a boost converter. The driver shapes the output gate-source voltage waveform by a multi-bit gate control signal, achieving dynamic control of the voltage/current behavior of the MOSFET in the switching transient. The experimental results demonstrate the effectiveness of the digital active gate driver in suppressing the switching surge voltage in various operating conditions.
IET POWER ELECTRONICS
(2023)
Proceedings Paper
Automation & Control Systems
Taito Watanabe, Yasuaki Wasa, Yoshihiko Susuki, Kenji Hirata, Kenta Tanaka
Summary: This paper focuses on the impact of consumer behavior of electric vehicle owners on energy and transportation systems, and proposes a dynamic allocation problem to optimize energy networks and traffic flow management. The effectiveness and implementation of the allocation are demonstrated through simulation in the Tokyo area.
Proceedings Paper
Energy & Fuels
Hajime Takayama, Shuhei Fukunaga, Takashi Hikihara
Summary: We present a simulation tool for optimizing the operation of digital active gate driver (DAGD) for SiC MOSFETs. By combining a Python-based program and SPICE simulation, the optimization tool offers optimized solutions with improved switching characteristics under a wide range of operating conditions. The study also analyzes the effects of different conditions on the obtained solutions.
2022 24TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'22 ECCE EUROPE)
(2022)
Proceedings Paper
Automation & Control Systems
Ryo Miyashita, Yoshihiko Susuki, Atsushi Ishigame
Summary: This paper proposes a novel technique of nonlinear Model Predictive Control (MPC) based on the Koopman operator framework, incorporating control specifications described by signal temporal logic for warm-water supply system control. The effectiveness of the proposed method is numerically established for temperature regulation.
2022 61ST ANNUAL CONFERENCE OF THE SOCIETY OF INSTRUMENT AND CONTROL ENGINEERS (SICE)
(2022)
Proceedings Paper
Energy & Fuels
Yu Shiogai, Alberto Castellazzi, Takashi Hikihara
Summary: This paper proposes an experimental characterization of a SiC power converter with three parallel legs, each consisting of a half-bridge switch and an inductive filter, where the number of active legs varies with the load. The results demonstrate that adopting this approach can significantly increase the efficiency at low loads, while the power density remains unaffected.
2022 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-HIMEJI 2022- ECCE ASIA)
(2022)
Proceedings Paper
Energy & Fuels
Shuhei Fukunaga, Hajime Takayama, Takashi Hikihara
Summary: This paper focuses on the anomalous switching surge voltage issue in the switching operation of SiC unipolar power semiconductor devices. A fully digitalized active gate driver is applied to a SiC MOSFET in a boost DC-DC converter to suppress the switching surge voltage, and experimental results show successful suppression.
2022 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-HIMEJI 2022- ECCE ASIA)
(2022)
Proceedings Paper
Automation & Control Systems
Yoshihiko Susuki, Takahiro Shimomura, Yutaka Ota, Atsushi Ishigame
Summary: This paper presents an online algorithm of Koopman Mode Decomposition (KMD) for extracting power system oscillation modes from synchrophasor data. Its effectiveness is demonstrated through experiments.
Article
Physics, Fluids & Plasmas
Yohei Kono, Yoshihiko Susuki, Takashi Hikihara
Summary: This study investigates the scale dependence of effective diffusion of fluid tracers and its relation to the Peclet number. A method for characterizing effective diffusivity without relying on scale separation is proposed, and numerical simulations demonstrate the scale dependence of effective diffusivity in specific flow environments.
Article
Mathematics, Interdisciplinary Applications
Kenji Takamichi, Yoshihiko Susuki, Marcos Netto, Atsushi Ishigame
Summary: This paper proposes a method for determining the contribution factor of state modes in a class of nonlinear dynamical systems using the spectral properties of the Koopman operator and sensitivity analysis. The method is applied to the numerical analysis of large-signal simulations for an interconnected AC/multi-terminal DC power system.
IEICE NONLINEAR THEORY AND ITS APPLICATIONS
(2022)
Article
Mathematics, Interdisciplinary Applications
Naoki Kawamoto, Yoshihiko Susuki, Salvatore D'Arco, Atsushi Ishigame, Denis Mende, David Sebastian Stock
Summary: This paper investigates the short-term voltage stability of the IEEE 9-bus system connected to a multi-terminal DC system based on VSC. The simulation results show that the introduction of AC voltage control in VSC can increase the load margin and enhance the short-term voltage stability without relying on the AC system.
IEICE NONLINEAR THEORY AND ITS APPLICATIONS
(2021)
