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IEEE International Conference on Industrial Informatics (INDIN)

作者： Jinhua She Hitoshi Nakamura Junya Imani Yasuhiro Ohyama Hiroshi Hashimoto Min Wu School of Information Science and Engineering Hunan Engineering Laboratory for Advanced Control and Intelligent Automation Changsha China School of Computer Science Tokyo University of Technology Hachioji Japan Graduate School of Bionics Tokyo University of Technology Hachioji Japan Master Program of Innovation for Design and Engineering Advanced Institute of Industrial Technology Japan

It is an urgent need to find an objective way to estimate the degree of fatigue of employees. In this study, we designed a monitoring and estimation system for the degree of fatigue. This paper explains a long-term pedaling experiment that we use it to explore the possibility to use only the time sequence data of head movement during pedaling to estimate the fatigue. While we show the possibility for this through experimental data, it is clear that we need to collect more data to establish an estimation method.

关键词： Fatigue Heart rate Estimation Educational institutions Monitoring Correlation Electronic mail

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Design of a fractional order PI controller for steam pressure in the steam drum of a bagasse fired boiler

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IFAC Proceedings Volumes 2014年第3期47卷 1337-1342页

作者： R. Rivas-Perez F. Castillo-Garcia J. Sotomayor-Moriano V. Feliu-Batlle Master Program in Control Engineering and Automation Pontificia Universidad Católica del Perú Lima Peru Havana Polytechnic University CUJAE Habana Cuba (Tel: 537-266-3285 Escuela Técnica Superior de Ingenieros Industriales Universidad de Castilla-La Mancha Ciudad Real Spain

This paper proposes a fractional-order PI controller for controlling the steam pressure in the steam drum of a bagasse fired boiler. The dynamics behavior of this process was experimentally identified. This identification procedure yielded an equivalent third order plus time delay model, and showed wide process static gain variations. We therefore propose a new methodology for the design of fractional-order robust controllers for this class of processes. It was shown that the attained controllers significantly outperformed the robustness achieved with current PI controllers.

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A heuristic fuzzy algorithm bio-inspired by Evolution Strategies for energy forecasting problems

A heuristic fuzzy algorithm bio-inspired by Evolution Strate...

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IEEE International Conference on Fuzzy Systems (FUZZ-IEEE)

作者： Vitor N. Coelho Frederico G. Guimarães Agnaldo J. R. Reis Igor M. Coelho Bruno N. Coelho Marcone J. F. Souza Graduate Program in Electrical Engineering Universidade Federal de Minas Gerais Belo Horizonte MG Brazil Departament of Electrical Engineering Universidade Federal de Minas Gerais Belo Horizonte MG Brazil Department of Control Engineering and Automation Universidade Federal de Ouro Preto Ouro Preto MG Brazil Institute of Computing Universidade Federal Fluminense Niteri RJ Brazil Department of Computer Science Universidade Federal de Ouro Preto Ouro Preto MG Brazil

Improving the use of energy resources has been a great challenge in the last years. A new complex scenario involving a decentralized bidirectional communication between energy suppliers, distribution system and consumption is nowadays becoming reality. Sometimes cited as the largest and most complex machine ever built, Electric Grids (EG) are been transformed into Smart Grids (SG). Hence, the load forecasting problem has become more difficulty and more autonomous load predictors are needed in this new conjecture. In this paper a novel method, so-called MSES, bio-inspired by Evolution Strategies (ES) combined with Multi-Start (MS) procedure is described. This procedure is mainly based on a self-adaptive algorithm to calibrate the parameters of the fuzzy rules. MSES was implemented in C++ via OptFrame framework. Our main goal is to evaluate the performance of this algorithm in a grid environment. Real data from an electric utility have been used in order to test the proposed methodology. The obtained results are fully described and analyzed.

关键词： Forecasting Vectors Prediction algorithms Predictive models Training Standards Adaptation models

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An improved parameterized approach for real time optimal motion planning of AUV moving in dynamic environment

An improved parameterized approach for real time optimal mot...

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2013 6th IEEE Conference on Robotics, automation and Mechatronics, RAM 2013

作者： Luo, Wenhao Peng, Jun Wang, Jing Department of Automation Shanghai Jiao Tong University Ministry of Education of China Shanghai 200240 China School of Information Science and Engineering Central South University Hunan Engineering Laboratory for Advanced Control and Intelligent Automation Changsha 410083 China Computer Engineering Program Bethune-Cookman University Daytona Beach FL 32114 United States

ISBN: (纸本)9781479911998

In this paper, we present an improved analytic method to the optimal trajectory generation of an autonomous underwater vehicle (AUV) in a dynamic environment. The proposed approach explicitly incorporates both the AUV kinematic and the geometric constraints due to dynamic obstacles and the terrain while rendering the near-shortest path by a performance index related to the path length. In particular, the proposed design is based on a family of parameterized trajectories determined by three adjustable parameters, which provides a unified way to reformulate the geometric constraints and performance index into a set of parameterized constraint equations. To that end, such a constrained optimization problem boils down to optimize those adjustable parameters, which can be analytically solved in the parameter space. The proposed solution enhances the methodologies of real-time path planning for robots in 3D environment. Simulation results verify the effectiveness of the proposed method. © 2013 IEEE.

关键词： Autonomous underwater vehicles

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A UML Modelling Approach for a Railway Signalization System Simulator and SCADA System

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IFAC Proceedings Volumes 2013年第25期46卷 77-82页

作者： Fatih Mecitoğlu M. Turan Söylemez Graduate of Control and Automation Engineering MSc. Program Istanbul Technical University Isbak Inc. Istanbul Turkey Control Engineering Department Istanbul Technical University Istanbul Turkey

Signalling systems play a vital role for safe and efficient transportation on railways. In parallel, development of signalling systems requires a lot of attention. The relevant standards insist on using formal methods such as automata and Petri Nets in the design of software for such crucial systems. In this study, the Unified Modelling Language (UML) formalism is employed to design a railway signalling system simulator and a SCADA system. The developed simulator can also help to validate a formal design based on automata.

关键词： railway signalling interlocking UML design PLC SCADA software development

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Hardware-based parallel firefly algorithm for embedded applications

Hardware-based parallel firefly algorithm for embedded appli...

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2013 NASA/ESA Conference on Adaptive Hardware and Systems, AHS 2013

作者： Muñoz, Daniel M. Llanos, Carlos H. Dos Santos Coelho, Leandro Ayala-Rincón, Mauricio Electronics Engineering Graduate Program Faculty of Gama University of Brasilia Brasilia DF Brazil Department of Mechanical Engineering Automation and Control Group/GRACO University of Brasilia Brasilia DF Brazil Industrial and Systems Engineering Graduate Program LAS/PPGEPS Pontifical Catholic University of Parana Curitiba Parana Brazil Departments of Computer Science and Mathematics University of Brasilia Brasilia DF Brazil

ISBN: (纸本)9781467363839

The firefly algorithm (FA) is a new population-based metaheuristic bioinspired on the behavior of the flashing characteristics of fireflies. As a population-based algorithm, the FA suffers from large execution times specifically for embedded optimization problems with computational limitations. For reducing execution times we propose a hardware parallel architecture of the FA algorithm that facilitates the implementation in Field programmable Gate Arrays (FPGAs). In addition, this work proposes the application of the opposition-based learning (OBL) approach to the FA algorithm. The respective hardware implementation (HPOFA) was mapped into a Virtex5 FPGA device and numerical experiments using four well-known benchmark problems demonstrate that the opposition-based approach allows the FA algorithm to improve its functionality, preserving the swarm diversity and avoiding the premature convergence problem. Synthesis results point out that the HPOFA architecture is effectively mapped in hardware and is suitable for embedded applications. © 2013 IEEE.

关键词： Parallel architectures

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Application of three-dimensional visualization techniques and decision making used in the detection of movements of the ground and underground pipelines in unstable areas

Application of three-dimensional visualization techniques an...

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25th European Modeling and Simulation Symposium, EMSS 2013

作者： Da Cunha Santos, Robson Silva, Marcelo Cunha, Gerson Gomes Fluminense Federal Institute Campus Macaé Engineering and Automation Control 164 km Amaral Peixoto Road Brazil Estácio de Sá University General Alfredo Bruno Gomes Martins Highway s/n Braga Cabo Frio RJ Brazil Alberto Luiz Coimbra Institute Graduate Engineering and Research Civil Engineering Program Federal University of Rio de Janeiro Brazil

ISBN: (纸本)9788897999225

Techniques for three-dimensional visualization and simulation of construction are applied in regions where companies install pipes for oil and gas. These regions can present aspects of geological and geotechnical risks, which can compromise the structural integrity of the pipes, by movement of the solids and interaction between soil and pipe. A system capable of evaluate these regions was created based on digitalized data of aerial photographs, coordinates of control instruments and on ground topography. The system consists of a threedimensional environment (3D) using technics on virtual reality (VR) developed to support the analysis of existing problems. The system is completely geo-referenced, which permits definig adequate solutions for the projects as well as avoiding problems for some specific areas. In addition, the system permits interaction with specialists, enabling them to indicate directly on the 3D images, the risk aspects for further evaluation in situ and for taking adequate decisions. © 2013 DIME UNIVERSITÀ DI GENOVA.

关键词： Three dimensional computer graphics

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A unified optimization method for real-time trajectory generation of mobile robots with kinodynamic constraints in dynamic environment

A unified optimization method for real-time trajectory gener...

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IEEE Conference on Robotics, automation and Mechatronics

作者： Wenhao Luo Jun Peng Weirong Liu Jing Wang Wentao Yu Department of Automation Key Laboratory of System Control And Information Processing Shanghai China School of Information Science and Engineering Hunan Engineering Laboratory for Advanced Controland Intelligent Automation Changsha China Computer Engineering Program Bethune-Cookman University Daytona Beach FL USA

This paper presents an efficient analytic method for a mobile robot to determine a collision-free trajectory with unified optimization. The robot kinodynamic constraints and the geometric constraints due to obstacles are addressed by considering a set of constrained inequalities from parameterized trajectories model. Two optimal performance matrices are employed to assess optimization problems. Particularly, both the constraints and performance functions are incorporated by similar forms in terms of trajectory parameters, which thereby can be considered in a uniform way. A parameter space of adjustable trajectory parameters is constructed to solve the unified optimization problem with constraints and results in more flexible and better optimal performance. The proposed approach is complete and enhances methods of deterministic real-time planning by overcoming typical drawbacks as intermediate configuration, curvature discontinuities, vertical singularities and incomplete optimization. Simulation results verify the validity and superiority of the proposed method.

关键词： Trajectory Robot kinematics Collision avoidance Mobile robots Acceleration Optimization

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Flocking control for Multi-agent Systems with Communication Optimization

Flocking Control for Multi-agent Systems with Communication ...

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American control Conference

作者： Heng Li Jun Peng Weirong Liu Jing Wang Jiangang Liu Zhiwu Huang School of Information Science and Engineering Central South University Hunan Engineering Laboratory for Advanced Control and Intelligent Automation Changsha 410075 China Computer Engineering Program Bethune-Cookman University Daytona Beach FL 32114 USA

ISBN: (纸本)9781479901777

In this paper, we consider the flocking control and communication optimization problem for multi-agent systems in a realistic communication environment. In flocking control, it is common to specify the formation by setting the separation distance between neighboring agents and then design the control to maintain the desired formation. However, since communication quality will generally change during flocking in a physical environment, a predefined separation distance might not always be the desired communication distance. In this paper, a distributed scheme integrating potential function and extremum seeking algorithm is proposed to obtain the desired separation distance between neighboring agents in real time. A comprehensive performance index related to the environment is proposed, which captures a trade-off between formation tasks and communication quality. Since it is difficult to calculate the gradient of the performance in physical environments, an adaptive model-free extremum seeking algorithm is designed to solve for the optimal separation distances, which calls for no knowledge of the gradient of performance function. We illustrate the proposed method through simulations.

关键词： Communication Optimization multi-agent systems realistic communication environment Multi-agent systems FLOCKING communication quality extremum seeking algorithm communication distance Standing Orders Gradient potential function

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An improved parameterized approach for real time optimal motion planning of AUV moving in dynamic environment

An improved parameterized approach for real time optimal mot...

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IEEE Conference on Robotics, automation and Mechatronics

作者： Wenhao Luo Jun Peng Jing Wang Department of Automation Key Laboratory of System Control And Information Processing Shanghai China School of Information Science and Engineering Hunan Engineering Laboratory Changsha China Computer Engineering Program Bethune-Cookman University Daytona Beach FL USA

关键词： Trajectory Planning Vehicle dynamics Dynamics Collision avoidance Kinematics Optimization

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