- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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[IEEE 2018 5th IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace) - Rome, Italy (2018.6.20-2018.6.22)] 2018 5th IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace) - Active Fault Tolerant Gyromoment Control of Information Satellites and Free-flying Robots
摘要： The methods for modeling and detection of anomalous in the automatic control systems, and also practical methods for active analysis of anomalous situations, are presented. We develop algorithms for consecutive classification of onboard equipment failures and for reconfiguration of control loop. The simulation results are presented for the control systems of the information satellites and free-flying robots.
关键词： free-flying robots,gyromoment control,automatic control systems,fault detection and isolation (FDI),dynamic reliability,fault-tolerance,information satellites
更新于2025-09-23 15:21:21
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[IEEE 2019 PhotonIcs & Electromagnetics Research Symposium - Spring (PIERS-Spring) - Rome, Italy (2019.6.17-2019.6.20)] 2019 PhotonIcs & Electromagnetics Research Symposium - Spring (PIERS-Spring) - System Level Analysis of Millimetre-wave GaN-based MIMO Radar for Detection of Micro Unmanned Aerial Vehicles
摘要： A particle filter (PF)-based robust navigation with fault diagnosis (FD) is designed for an underwater robot, where 10 failure modes of sensors and thrusters are considered. The nominal underwater robot and its anomaly are described by a switching-mode hidden Markov model. By extensively running a PF on the model, the FD and robust navigation are achieved. Closed-loop full-scale experimental results show that the proposed method is robust, can diagnose faults effectively, and can provide good state estimation even in cases where multiple faults occur. Comparing with other methods, the proposed method can diagnose all faults within a single structure, diagnose simultaneous faults, and it is easily implemented.
关键词： fault tolerance,Fault diagnosis (FD),switch-mode hidden Markov model (HMM),particle filter (PF),remotely operated underwater vehicle (ROV),underwater navigation
更新于2025-09-23 15:21:01
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[IEEE 2019 IEEE SENSORS - Montreal, QC, Canada (2019.10.27-2019.10.30)] 2019 IEEE SENSORS - Single Particle Detector Using the Evanescent Field of a Silicon Nitride Waveguide
摘要： Cloud computing technology has become an integral trend in the market of information technology. Cloud computing virtualization and its Internet-based lead to various types of failures to occur and thus the need for reliability and availability has become a crucial issue. To ensure cloud reliability and availability, a fault tolerance strategy should be developed and implemented. Most of the early fault tolerant strategies focused on using only one method to tolerate faults. This paper presents an adaptive framework to cope with the problem of fault tolerance in cloud computing environments. The framework employs both replication and checkpointing methods in order to obtain a reliable platform for carrying out customer requests. Also, the algorithm determines the most appropriate fault tolerance method for each selected virtual machine. Simulation experiments are carried out to evaluate the framework’s performance. The results of the experiments show that the proposed framework improves the performance of the cloud in terms of throughput, overheads, monetary cost, and availability.
关键词： replication,checkpointing,virtual machines,Fault tolerance,cloud computing
更新于2025-09-23 15:21:01
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[IEEE 2019 Photonics North (PN) - Quebec City, QC, Canada (2019.5.21-2019.5.23)] 2019 Photonics North (PN) - Continuous-wave Nd:YVO <sub/>4</sub> laser with conical refraction output
摘要： A particle ?lter (PF)-based robust navigation with fault diagnosis (FD) is designed for an underwater robot, where 10 failure modes of sensors and thrusters are considered. The nominal underwater robot and its anomaly are described by a switching-mode hidden Markov model. By extensively running a PF on the model, the FD and robust navigation are achieved. Closed-loop full-scale experimental results show that the proposed method is robust, can diagnose faults effectively, and can provide good state estimation even in cases where multiple faults occur. Comparing with other methods, the proposed method can diagnose all faults within a single structure, diagnose simultaneous faults, and it is easily implemented.
关键词： fault tolerance,Fault diagnosis (FD),remotely operated underwater vehicle (ROV),switch-mode hidden Markov model (HMM),particle ?lter (PF),underwater navigation
更新于2025-09-19 17:13:59
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[IEEE 2019 International Conference on Recent Advances in Energy-efficient Computing and Communication (ICRAECC) - Nagercoil, India (2019.3.7-2019.3.8)] 2019 International Conference on Recent Advances in Energy-efficient Computing and Communication (ICRAECC) - Free Space Optical Communication and Laser Beam Propagation through Turbulent Atmosphere: A Brief Survey
摘要： A particle ?lter (PF)-based robust navigation with fault diagnosis (FD) is designed for an underwater robot, where 10 failure modes of sensors and thrusters are considered. The nominal underwater robot and its anomaly are described by a switching-mode hidden Markov model. By extensively running a PF on the model, the FD and robust navigation are achieved. Closed-loop full-scale experimental results show that the proposed method is robust, can diagnose faults effectively, and can provide good state estimation even in cases where multiple faults occur. Comparing with other methods, the proposed method can diagnose all faults within a single structure, diagnose simultaneous faults, and it is easily implemented.
关键词： fault tolerance,Fault diagnosis (FD),switch-mode hidden Markov model (HMM),remotely operated underwater vehicle (ROV),particle ?lter (PF),underwater navigation
更新于2025-09-19 17:13:59
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[IEEE 2019 16th China International Forum on Solid State Lighting & 2019 International Forum on Wide Bandgap Semiconductors China (SSLChina: IFWS) - Shenzhen, China (2019.11.25-2019.11.27)] 2019 16th China International Forum on Solid State Lighting & 2019 International Forum on Wide Bandgap Semiconductors China (SSLChina: IFWS) - Violet Chip Excited White LEDs for Sun-Like Lighting and Horticulture Lighting
摘要： In this work, facing pressure from both the increasing vulnerability to single event effects (SEEs) and design constraints of the power consumption, we have proposed a Coarse-Grained Reconfigurable Architecture (CGRA) processor. Our goal is to translate a user programmable redundancy to a guide for balancing energy consumption on the one hand and the reliability requirements on the other. We designed software (SW) and hardware (HW) approaches, coordinating them closely to achieve this purpose. The framework provides several user-assignable patterns of redundancy and the hardware modules to interpret well these patterns. A first version prototype processor, with the name EReLA (Explicit Redundancy Linear Array) has been implemented and manufactured with a CMOS technology. Stress tests based on alpha particle irradiation were conducted to verify the tradeoff between the robustness and the power efficiency of the proposed schemes.
关键词： fault tolerance,Data flow computing,redundancy,reconfigurable architectures
更新于2025-09-19 17:13:59
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[IEEE 2020 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus) - St. Petersburg and Moscow, Russia (2020.1.27-2020.1.30)] 2020 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus) - Viability Analysis of Large Photovoltaic Power Plants as a Solution of Power Shortage in Iraq
摘要： In this work, facing pressure from both the increasing vulnerability to single event effects (SEEs) and design constraints of the power consumption, we have proposed a Coarse-Grained Reconfigurable Architecture (CGRA) processor. Our goal is to translate a user programmable redundancy to a guide for balancing energy consumption on the one hand and the reliability requirements on the other. We designed software (SW) and hardware (HW) approaches, coordinating them closely to achieve this purpose. The framework provides several user-assignable patterns of redundancy and the hardware modules to interpret well these patterns. A first version prototype processor, with the name EReLA (Explicit Redundancy Linear Array) has been implemented and manufactured with a m CMOS technology. Stress tests based on alpha particle irradiation were conducted to verify the tradeoff between the robustness and the power efficiency of the proposed schemes.
关键词： reconfigurable architectures,redundancy,Data flow computing,fault tolerance
更新于2025-09-19 17:13:59
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[IEEE 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Chicago, IL, USA (2019.6.16-2019.6.21)] 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - An Update on Solar Energy and Sun Tracker Technology with a Dual Axis Sun Tracker Application
摘要： Cloud computing technology has become an integral trend in the market of information technology. Cloud computing virtualization and its Internet-based lead to various types of failures to occur and thus the need for reliability and availability has become a crucial issue. To ensure cloud reliability and availability, a fault tolerance strategy should be developed and implemented. Most of the early fault tolerant strategies focused on using only one method to tolerate faults. This paper presents an adaptive framework to cope with the problem of fault tolerance in cloud computing environments. The framework employs both replication and checkpointing methods in order to obtain a reliable platform for carrying out customer requests. Also, the algorithm determines the most appropriate fault tolerance method for each selected virtual machine. Simulation experiments are carried out to evaluate the framework’s performance. The results of the experiments show that the proposed framework improves the performance of the cloud in terms of throughput, overheads, monetary cost, and availability.
关键词： replication,checkpointing,virtual machines,Fault tolerance,cloud computing
更新于2025-09-19 17:13:59
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[IEEE 2019 IEEE International Symposium on Defect and Fault Tolerance in VLSI and Nanotechnology Systems (DFT) - Noordwijk, Netherlands (2019.10.2-2019.10.4)] 2019 IEEE International Symposium on Defect and Fault Tolerance in VLSI and Nanotechnology Systems (DFT) - Fault Tolerant Photovoltaic Array: A Repair Circuit Based on Memristor Sensing
摘要： Solar energy is one of the most important sources of renewable energy. Photovoltaic arrays are a widely employed systems used to harvest solar energy. In such systems, the presence of faulty cells negatively affect the energy production of the entire array. The design of fault tolerant solar arrays is therefore attracting a growing interest. In this work, we propose a hardware implementation of a fault-recovery algorithm for solar cell arrays. The proposed system detects cells with degraded performance using a memristor as sensing device. With the aim of improving energy production ef?ciency, the connections among solar cells are recon?gured according to the array health status. The designed system automatically activates spare cells in the segments of the array to eventually increase energy production. The proposed solution can be adapted to arrays of any size and be applied to different types of solar cells. We show through simulations that the solution here proposed signi?cantly increases the energy production in presence of faults.
关键词： Photovoltaic arrays,fault tolerance,renewable energy,solar energy,memristor sensing
更新于2025-09-16 10:30:52
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[IEEE 2019 IEEE Energy Conversion Congress and Exposition (ECCE) - Baltimore, MD, USA (2019.9.29-2019.10.3)] 2019 IEEE Energy Conversion Congress and Exposition (ECCE) - A Novel Approximate Model Based Fault Diagnosis Technique for a Photovoltaic DC/AC Grid Tied Inverter
摘要： The recent popularity of the utilization of photovoltaic (PV) systems over conventional power generation has placed focus onto the reliability of support equipment, such as DC-AC inverters. With prolonged use, short-circuit (SC) or open-circuit (OC) faults can develop in the semiconductor devices. This work is proposing a novel fault diagnosis algorithm. The method makes use of the H-bridge inverter approximated as a synchronous switching buck converter while assuming that the grid frequency is much lower than the inverter switching frequency. The proposed algorithm allows detection and identification of SC and OC faults by combining a comparison between the estimated and actual inductor current and the incremental change in the output voltage. To allow continuous functioning of the inverter post fault, a redundant leg is added to the PV inverter. In this PV inverter topology, a fuse is allocated for each switch to prevent overcurrent and a triode for alternating current (TRIAC) is added for each leg to allow isolation of the faulty leg and connection of the redundant leg.
关键词： inverter,short circuit,fault diagnosis,open circuit,fault tolerance
更新于2025-09-12 10:27:22