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IEEE International Symposium on Industrial Electronics (ISIE)

作者： Tae Rim Park Jae Hyun Park Wook Hyun Kwon Control Information Systems Laboratory School of Electrical Engineering and Computer Science Seoul National University Seoul South Korea Real-time Embedded Systems Laboratory School of Information and Communication Engineering Inha University Incheon South Korea

ISBN: (纸本)0780370902

In this paper, a new method, named adjustable timer resolution (ATR) is proposed to control tasks in a timely manner, with enhanced performance on real-time operating systems. It prevents useless execution of the timer interrupt service routine (ISR). Features of the proposed method are compared with the conventional method, and the schedulability is analyzed to estimate the performance. As an implementation model, uC/OS-II is modified and ported to a power PC processor system. The metrics and results of the model are presented and discussed.

关键词： Industrial control real time systems control systems Operating systems Communication system control Performance analysis Embedded system processor scheduling Power system modeling time factors

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Exploiting Job Response-time Information in the Co-Design of real-time control systems

Exploiting Job Response-Time Information in the Co-Design of...

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IEEE International Conference on Embedded and real-time Computing systems and Applications (RTCSA)

作者： Yang Xu Karl-Erik Årzén Anton Cervin Enrico Bini Bogdan Tanasa Department of Automatic Control Lund University Sweden Scuola Superiore Sant'Anna Real-Time Systems Laboratory Italy Department of Computer and Information Science Linköping University Sweden

We consider a real-time system of multiple tasks, each task having a plant to control. The overall quadratic control cost is to be optimized. We exploit the periodicity of the task response time, which corresponds to a periodic delay pattern in the feedback control loop. Perturbed periods are used as a tool to find a finite hyper period. We present an analytical procedure to design a periodic linear-quadratic-Gaussian (LQG) controller for tasks with fixed execution times as well as a numerical solution to the periodic -- stochastic LQG problem for tasks with variable execution times. The controllers are evaluated using simulations in real-time scheduling and control co-design examples.

关键词： Delays real-time systems control design time factors Mathematical model Numerical models Cost function

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MISO damping controller design for a TCSC using particle swarm

MISO damping controller design for a TCSC using particle swa...

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iREP Symposium on Bulk Power System Dynamics and control

作者： Swakshar Ray Ganesh K. Venayagamoorthy Balarko Chaudhuri Rajat Majumder Real-Time Power and Intelligent Systems Laboratory University of Missouri Rolla MO USA Power System and Control Group Imperial College London London UK University of Queensland Brisbane Australia

This paper presents a new approach for designing multi-input-single-output (MISO) damping controller for a TCSC in a multi-machine power system. The damping controller design uses particle swarm optimization (PSO) to determine the coefficients of single or multi-stage lead-lag compensators. The classical technique works well in the design of lead-lag compensators for SISO controllers. But, there is no proper step-by-step procedure to achieve the desired performance characteristics for a MISO controller. Hence, in this paper, a computational optimization tool has been used to determine the optimal gains and time constants of a linear MISO damping controller. The damping controller is implemented for a TCSC on a multi-machine multi-modal power system and has shown considerable improvement in minimizing system oscillations.

关键词： Damping Power capacitors Thyristors Particle swarm optimization control systems Power system control Power system dynamics Power system reliability Power systems Power system interconnection

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Mixed abstraction level hardware synthesis from SDL for rapid prototyping

Mixed abstraction level hardware synthesis from SDL for rapi...

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International Workshop on Rapid System Prototyping (RSP)

作者： O. Bringmann A. Muth F. Slomka W. Rosenstiel G. Farber R. Hofmann Wilhelm-Schickard-Institut für Informatik Department of Computer Engineering Universität Tubingen Germany Laboratory for Process Control and Real-Time Systems Technische Universitä MTünchen Germany Department of Computer Architecture and Performance Evaluation Universität Erlangen Nürnberg Germany

SDL is currently gaining interest as a system level specification language for HW/SW codesign. Automated synthesis of SDL in hardware so far had problems with its efficiency. The investigations on the resource usage of SDL-to-VHDL designs presented in this paper identify two key challenges: minimizing the overhead introduced by SDL process infrastructure, and choosing the appropriate synthesis method. This paper presents a framework for SDL hardware synthesis where VHDL code generation, high-level synthesis and RT-level synthesis are combined. A configurable run-time environment implements services like data handling and message passing in efficient, hand-coded library components, which take into account properties of the target architecture. For these components RT-level synthesis was found to be suitable. The behavior of each SDL process on the other hand is freely specified by the system designer. Depending on the type of application, i.e. complex data-oriented or control-oriented either high-level synthesis, RT-level synthesis, or a combination of both can prove to be optimal.

关键词： Hardware Prototypes control system synthesis Timing High level synthesis Computer architecture Resource management Arithmetic High performance computing Design engineering

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Residual Squeeze-and-Excitation Network with Multi-scale Spatial Pyramid Module for Fast Robotic Grasping Detection

Residual Squeeze-and-Excitation Network with Multi-scale Spa...

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IEEE International Conference on Robotics and Automation (ICRA)

作者： Hu Cao Guang Chen Zhijun Li Jianjie Lin Alois Knoll Chair of Robotics Artificial Intelligence and Real-Time Systems Technische Universität München München Germany State Key Laboratory of Management and Control of Complex Systems Institute of Automation Chinese Academy of Sciences Tongji University Shanghai China University of Science and Technology of China China

This paper proposes an efficient, fully convolutional neural network to generate robotic grasps by using 300×300 depth images as input. Specifically, a residual squeeze-and-excitation network (RSEN) is introduced for deep feature extraction. Following the RSEN block, a multi-scale spatial pyramid module (MSSPM) is developed to obtain multi-scale contextual information. The outputs of each RSEN block and MSSPM are combined as inputs for hierarchical feature fusion. Then, the fused global features are upsampled to perform pixel-wise learning for grasping pose estimation. The experimental results on Cornell and Jacquard grasping datasets indicate that the proposed method has a fast inference speed of 5ms while achieving high grasp detection accuracy of 96.4% and 94.8% on Cornell and Jacquard, respectively, which strikes a balance between accuracy and running speed. Our method also gets a 90% physical grasp success rate with a UR5 robot arm.

关键词： Automation Conferences Pose estimation Grasping Manipulators Feature extraction Inference algorithms

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Cause Identification of Single-line-to-ground Fault in Distribution System

Cause Identification of Single-line-to-ground Fault in Distr...

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International Conference on Power System Technology (POWERCON)

作者： Kun Liu Xuan Ren Bin Wang Key Lab for Protective Relaying Real Time Digital Simulation of Guangdong Power Grid Co. Ltd. Power Dispatch Control Center of Guangdong Power Grid Co. Ltd Guangzhou China Key Laboratory of Control and Simulation of Power Systems and Generation Equipment Tsinghua University Beijing China

ISBN: (纸本)9781665407380

Cause identification of single-line-to-ground fault in the distribution system is of great significance to the electric workers for fault isolation and rapid maintenance. The key of fault cause identification is to accurately and quickly distinguish human electric shock faults from non-biological faults. In this paper, human electric shock faults and non-biological faults are modeled and fault characteristics are analyzed. Based on the differences between shape and rotation characteristic of the volt-ampere characteristic curves, a fault cause identification method which can distinguish human electric shock faults from non-biological faults is proposed. Simulations show the effectiveness of the method.

关键词： Fault diagnosis Analytical models Shape Electric shock Maintenance engineering Power systems

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E-3DGS: Gaussian Splatting with Exposure and Motion Events

arXiv

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arXiv 2024年

作者： Yin, Xiaoting Shi, Hao Bao, Yuhan Bing, Zhenshan Liao, Yiyi Yang, Kailun Wang, Kaiwei State Key Laboratory of Modern Optical Instrumentation Zhejiang University China School of Robotics National Engineering Research Center of Robot Visual Perception and Control Technology Hunan University China College of Information Science and Electronic Engineering Zhejiang University China The Chair of Robotics AI and Real-Time Systems Technical University of Munich Germany

Estimating Neural Radiance Fields (NeRFs) from images captured under optimal conditions has been extensively explored in the vision community. However, robotic applications often face challenges such as motion blur, insufficient illumination, and high computational overhead, which adversely affect downstream tasks like navigation, inspection, and scene visualization. To address these challenges, we propose E-3DGS, a novel event-based approach that partitions events into motion (from camera or object movement) and exposure (from camera exposure), using the former to handle fast-motion scenes and using the latter to reconstruct grayscale images for high-quality training and optimization of event-based 3D Gaussian Splatting (3DGS). We introduce a novel integration of 3DGS with exposure events for high-quality reconstruction of explicit scene representations. Our versatile framework can operate on motion events alone for 3D reconstruction, enhance quality using exposure events, or adopt a hybrid mode that balances quality and effectiveness by optimizing with initial exposure events followed by high-speed motion events. We also introduce EME-3D, a real-world 3D dataset with exposure events, motion events, camera calibration parameters, and sparse point clouds. Our method is faster and delivers better reconstruction quality than event-based NeRF while being more cost-effective than NeRF methods that combine event and RGB data by using a single event sensor. By combining motion and exposure events, E-3DGS sets a new benchmark for event-based 3D reconstruction with robust performance in challenging conditions and lower hardware demands. The source code and dataset will be available at https://***/MasterHow/E-3DGS. Copyright © 2024, The Authors. All rights reserved.

关键词： Gaussian distribution

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Duplicate checking Strategies for Selecting Topics for Graduation Thesis Based on Maximum Public Sequence

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IOP Conference Series: Earth and Environmental Science 2019年第3期267卷

作者： Guorui Yu Li Huang Jiewen Sun Shangchun Liao School of Computer Science and Technology Wuhan University of Science and Technology phone:*** Intelligent Information Processing and Hubei Real-time Industrial Systems Laboratory. Key Laboratory of Metallurgical Equipment and Control Technology Wuhan University of Science and Technology Ministry of Education.

The system is based on the undergraduate thesis management system as the practice platform, focusing on the realization of the thesis topic check function. The current check-up detection system is based on the entire contents of the query, and does not meet the requirements for an undergraduate thesis query. According to the characteristics of the thesis, the system first divides the keywords into the topic, selects the irrelevant parts, then removes the irrelevant words, and finally checks the keywords in the topic, and realizes the efficient and accurate check for inspection.

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Active Targeting of Tumors through Conformational Epitope Imprinting†

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Angewandte Chemie 2015年第17期127卷

作者： Yan Zhang Chunyue Deng Sha Liu Jin Wu Zhangbao Chen Chong Li Weiyue Lu Key Laboratory of Luminescence and Real‐time Analytical Chemistry (Ministry of Education) College of Pharmaceutical Sciences Southwest University No. 2 Tiansheng Road Beibei Chongqing 400715 (China) Chongqing Engineering Research Center for Pharmaceutical Process and Quality Control (China) Key Laboratory of Smart Drug Delivery (Ministry of Education) School of Pharmacy Fudan University Shanghai 201203 (China)

Inspired by the knowledge that most antibodies recognize a conformational epitope because of the epitope’s specific three‐dimensional shape rather than its linear structure, we combined scaffold‐based peptide design and surface molecular imprinting to fabricate a novel nanocarrier harboring stable binding sites that captures a membrane protein. In this study, a disulfide‐linked α‐helix‐containing peptide, apamin, was used to mimic the extracellular, structured N‐terminal part of the protein p32 and then serve as an imprinting template for generating a sub‐40 nm‐sized polymeric nanoparticle that potently binds to the target protein, recognizes p32‐positive tumor cells, and successfully mediates targeted photodynamic therapy in vivo. This could provide a promising alternative for currently used peptide‐modified nanocarriers and may have a broad impact on the development of polymeric nanoparticle‐based therapies for a wide range of human diseases.

关键词： Gezielte Tumortherapie Konformationsepitope Photodynamische Therapie Prägung Wirkstofftransport

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Correction: Mechanisms of Mg carbonates precipitation and implications for CO2 capture and utilization/storage

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Inorganic Chemistry Frontiers 2023年第8期10卷 2493-2493页

作者： Hellen S. Santos Hoang Nguyen Fabricio Venâncio Durgaprasad Ramteke Ron Zevenhoven Paivo Kinnunen Fibre and Particle Engineering Research Unit University of Oulu Pentti Kaiteran katu 1 90570 Oulu Finland Development Center of Real Time Chemical Processes and Analyses (NQTR) Institute of Chemistry Federal University of Rio de Janeiro Rua Hélio de Almeida 40 Cidade Universitária da Universidade federal do Rio de Janeiro 21941-614 Rio de Janeiro-RJ Brazil Process and Systems Engineering Laboratory Åbo Akademi University Henrikinkatu 2 20500 Turku Finland

Correction for ‘Mechanisms of Mg carbonates precipitation and implications for CO2 capture and utilization/storage’ by Hellen S. Santos et al., Inorg. Chem. Front., 2023, https://***/10.1039/d2qi02482a.

Correction for ‘Mechanisms of Mg carbonates precipitation and implications for CO₂ capture and utilization/storage’ by Hellen S. Santos et al., Inorg. Chem. Front., 2023, https://***/10.1039/d2qi02482a.

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