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Cerebellar model arithmetic computer with pseudo-bacterial genetic algorithm and its hardware acceleration

Systems and computers in Japan 2004年第11期35卷 14-23页

作者： Miwa, Masahiro Furuhashi, Takeshi Matsuzaki, Motoaki Okuma, Shigeru Electronics Control Division Research and Development Rinnai Corporation Aichi 480-0132 Japan Dept. of Information Engineering Mie University Tsu 514-8507 Japan Emergent Soft Computer Nagoya Indust. Sci. Res. Institute Nagoya 463-0003 Japan Department of Electrical Engineering Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan

The cerebellar model arithmetic computer (CMAC) is a kind of neural network that is capable of high-speed learning. In the use of the CMAC, various parameters must be defined, but it is difficult to set the parameters adequately. The pseudo-bacterial genetic algorithm (PBGA) is a kind of evolutionary computation which offers local search. This paper considers adequate determination of the location of the boundary line, which is one of the parameters of the CMAC. For that purpose the PBGA is applied, and PBGA/CMAC, which realizes the efficient search of the boundary line of the CMAC, is proposed. Furthermore, since PBGA/CMAC requires a large amount of computation, a hardware implementation is considered in order to improve the computation speed. The computation involved in the learning rules of the CMAC is divided into four stages, and the structure is implemented as a pipeline. The pipeline implementation produces read-after-write hazards for the granular cell values. However, it is shown that the difference in performance from conventional CMAC learning rule is small, indicating the possibility of achieving high-speed learning. The speed of PBGA/CMAC hardware is improved to 140 times the speed of operation by software. In order to present a guide for PBGA/CMAC hardware, the hardware volume is evaluated, and it is shown that it can be implemented with precision sufficient for practice. © 2004 Wiley Periodicals, Inc.

关键词： computer science

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A Novel Frequency Regulation Strategy with the Application of Energy Storage System for Large Scale Wind Power Integration

A Novel Frequency Regulation Strategy with the Application o...

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IEEE Green Technologies Conference (IEEE-Green)

作者： Linlin Wu Wenzhong Gao Zhengpai Cui Xiao Kou Dept. of Smart Grid and Renewable Resource Tech. State Grid Jibei Electric Co. Ltd. Research Institute Beijing China Electric Power Dispatching and Control Center State Grid Jibci Electric Co. Ltd Beijing China Dept. Electrical and Computer Engineering University of Denver Denver Colorado USA

ISBN: (纸本)9781479988853

Integration of large scale wind power is both economical and environmentally-friendly. However, stochasticity and intermittency of wind power bring new challenges to frequency stability issue of the wind power system. The frequency regulation capacity limitation of the power system is one of the most important reasons limiting integration capacity of wind power. The power output of energy storage system (ESS) can be regulated very rapidly. Hence, it is feasible and effective for ESS to participate in system frequency regulation. This will increase overall system frequency regulation capacity and thus helps accommodating more wind power integrated into the power grid. A novel strategy for ESS to participate in frequency regulation is proposed in this paper. The control strategy includes two stages: in the first stage, ESS regulates its power output based on the wind power prediction information, in the second stage, frequency feedback is used to regulate the ESS power output to further reduce steady state frequency deviation. Since the ESS power output can be regulated before the frequency deviation happens, the dynamic response speed of frequency regulation of ESS can be significantly improved. Besides, frequency deviation can be decreased thanks to the step command in the first stage. Simulation of a wind power system is performed in Real Time Digital Simualtor (RTDS) and the results show the effectiveness of the proposed method.

关键词： Frequency control Wind power generation Time-frequency analysis Energy storage Power system stability Steady-state Simulation

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The All Wheel Speed Balance control Concept*

The All Wheel Speed Balance Control Concept*

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International Conference on Intelligent Transportation

作者： Gaël P. Atheupe Didier Martinez Bruno Monsuez Renault Technical centre RENAULT Group & ENSTA Paris Institute Polytechnique de Paris (IP Paris) Paris France dept. Chassis control & ADAS systems Renault Technical centre RENAULT Group Guyancourt France dept. Computer science & systems engineering ENSTA Paris Institute Polytechnique de Paris (IP Paris) Paris France

ISBN: (数字)9798331505929

ISBN: (纸本)9798331505936

The transition to vehicle electrification introduces new demands on chassis dynamics, paving the way for advances in driving dynamics, safety, and efficiency. A key consideration arises: how are driving torque impulses converted in electric vehicles with multiple power sources? This study introduces a novel approach to address these demands through the integration of state-of-the-art yaw control, using concurrent front/rear axle and front right/front left torque distribution based on the wheel speed balance control concept. Our aim is not necessarily to demonstrate the supremacy of our approach, but rather to present a fresh philosophical perspective on the problem of yaw control in electric vehicles. Our method embodies dynamic load transfer and axle dynamics into the yaw control problem formulation, setting it apart from current methodologies. Through experimental results, we illustrate the effectiveness of our proposed approach regardless of road surface conditions.

关键词： Torque Systematics Roads Wheels Electric vehicles Stability analysis Trajectory Safety Vehicle dynamics Axles

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Unconstrained Measurement System for Scratching by Limb and Estimation of Scratching Area

Unconstrained Measurement System for Scratching by Limb and ...

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International Conference on Intelligent Computational Systems(ICICS’2012);International Conference on Mechanical,Automotive and Materials engineering(ICMAME’2012);International Conference on Electronics,Biomedical engineering and its Applications(ICEBEA’2012);International Conference on Ecological,Environmental and Biological Sciences(ICEEBS’2012);International Conference on Business,Economics,Management and Behavioral Sciences (ICBEMBS’2012);International Conference on Applied Mathematics and Pharmaceutical Sciences(ICAMPS’2012)

作者： Toshihiro.Shino Yosuke.Kurihara Syoko.Nukaya Kajiro.Watanabe Hiroshi.Tanaka the Graduate School of Hosei University the Dept. of Computer and Information Science Faculty of Science and Technology Seikei University the Division of Advanced Therapeutical Sciences Tokyo Medical and Dental University the System Control Engineering Department Faculty of Engineering Hosei University the University Center for Information Medicine Tokyo Medical and Dental University

This paper describes an unconstrained measurement system for scratching motion. We have proposed an unconstrained bed monitoring system by piezoceramic sensors that could detect heartbeat respiration and body movement. The system could measure the bed vibrations due to the motion of the person on the bed. In this paper, we apply this unconstrained bed sensing method to the system for detecting scratching motion. The proposed sensors are placed under the bed feet. When the subject is lying on the bed, the output signals from the sensors are proportional to the magnitude of the vibration due to the body movement of the subject. Hence, it is possible to detect the subject's scratching motion from the output signals. Furthermore, also with output signals from the three ceramic sensors, the proposed system can detect the direction of the body movement, which enables us to estimate the scratched area. We evaluated three scratching motions using the proposed system in the validity experiment as follows: Case 1 is the subject's scratching the right cheek with right hand;Case 2 is the subject's scratching the back after turning over, and;Case 3 is the subject's scratching the shin with another foot. As the results of the experiment, we identified the scratching signals that enable the determination when the scratching occurred. Furthermore, the difference among the amplitudes of the output signals enabled us to estimate where the subject scratched.

关键词： body movement, itchy, piezoceramics, scratching unconstrained bed monitoring.

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Diagnosis of wind turbine rotor system

Diagnosis of wind turbine rotor system

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American control Conference

作者： Henrik Niemann Mahmood Mirzaei Lars Christian Henriksen Niels Kjolstad Poulsen Dept. of Electrical Engineering Automation and Control Build. 326 Technical University of Denmark DK-2800 Kgs. Lyngby Denmark Dept. of wind energy Technical University of Denmark DK-2800 Kgs. Lyngby Denmark AF Consult Lyskaer 3F 2730 Herlev Denmark Dept. of Applied Mathematics and Computer Science Technical University of Denmark DK-2800 Kgs. Lyngby Denmark

ISBN: (纸本)9781467386838

This paper describes a model free method for monitoring and fault diagnosis of the elements in a rotor system for a wind turbine. The diagnosis as well as the monitoring is done without using any model of the wind turbine and the applied controller or a description of the wind profile. The method is based on available standard sensors on wind turbines. The method can be used both on-line as well as off-line. Faults or changes in the rotor system will result in asymmetries, which can be monitored and diagnosed. This can be done by using the multi-blade coordinate transformation. Changes in the rotor system that can be diagnosed and monitored are: actuator faults, sensor faults and internal blade changes as e.g. change in mass of a blade.

关键词： Wind turbines Monitoring Sensors Rotors Fault diagnosis Blades Aerodynamics

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Cortical Activity and Functional Hyperconnectivity by Simultaneous EEG Recordings from Interacting Couples of Professional Pilots

Cortical Activity and Functional Hyperconnectivity by Simult...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society

作者： L. Astolfi J. Toppi G. Borghini G. Vecchiato E J. He A. Roy F. Cincotti S. Salinari D. Mattia B. He F. Babiloni the Department of Computer control and management engineering Univ. of Rome "Sapienza" and with the Fondazione Santa Lucia Hospital Rome Italy Fondazione Santa Lucia Rome Italy. the Dept. of Physiology and Pharmacology of the University of Rome "Sapienza" and with Fondazione Santa Lucia Rome Italy. School of Engineering and Applied Sciences University of Pennsylvania USA. the Department of Biomedical Engineering University of Minnesota Minneapolis Minnesota USA. the Department of Computer control and management engineering Univ. of Rome "Sapienza Rome Italy the Department of Biomedical Engineering University of Minnesota Minneapolis Minnesota USA

ISBN: (纸本)9781424441198

controlling an aircraft during a flight is a compelling condition, which requires a strict and well coded interaction between the crew. The interaction level between the Captain and the First Officer changes during the flight, ranging from a maximum (during takeoff and landing, as well as in case of a failure of the instrumentation or other emergency situations) to a minimum during quiet mid-flight. In this study, our aim is to investigate the neural correlates of different kinds and levels of interaction between couples of professional crew members by means of the innovative technique called brain hyperscanning, i.e. the simultaneous recording of the hemodynamic or neuroelectrical activity of different human subjects involved in interaction tasks. This approach allows the observation and modeling of the neural signature specifically dependent on the interaction between subjects, and, even more interestingly, of the functional links existing between the brain activities of the subjects interacting together. In this EEG hyperscanning study, different phases of a flight were reproduced in a professional flight simulator, which allowed, on one side, to reproduce the ecological setting of a real flight, and, on the other, to keep under control the different levels of interaction induced in the crew by means of systematic and simulated failures of the aircraft instrumentation. Results of the procedure of linear inverse estimation, together with functional hyperconnectivity estimated by means of Partial Directed Coherence, showed a dense network of connections between the activity in the two brains in the takeoff and landing phases, when the cooperation between the crew is maximal, while conversely no significant links were shown during the phases in which the activity of the two pilots was independent.

关键词： Cortical Activity and Functional this EEG hyperscanning study Directed Coherence

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Vision-guided flight stability and control for micro air vehicles

Vision-guided flight stability and control for micro air veh...

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IEEE/RSJ International Conference on Intelligent Robots and Systems

作者： S.M. Ettinger M.C. Nechyba P.G. Ifju M. Waszak Dept. of Electr. & Comput. Eng. Florida Univ. Gainesville FL USA Department of Electrical and Computer Engineering University of Florida Gainesville FL USA Department of Aerospace Engineering Mechanics and Engineering University of Florida Gainesville FL USA Dynamics and Control Branch NASA-Langley Research Center Hampton VA USA

Substantial progress has been made recently towards designing, building and test-flying remotely piloted Micro Air Vehicles (MAVs) and small UAVs. We seek to complement this progress in overcoming the aerodynamic obstacles to flight at very small scales with a vision-guided flight stability and autonomy system, based on a robust horizon detection algorithm. In this paper, we first motivate the use of computer vision for MAV autonomy, arguing that given current sensor technology, vision may be the only practical approach to the problem. We then describe our statistical vision-based horizon detection algorithm, which has been demonstrated at 30 Hz with over 99.9% correct horizon identification. Next, we develop robust schemes for the detection of extreme MAV attitudes, where no horizon is visible, and for the detection of horizon estimation errors, due to external factors such as video transmission noise. Finally, we discuss our feedback controller for self-stabilized flight, and report results on vision-based autonomous flights of duration exceeding ten minutes.

关键词： Unmanned aerial vehicles Robust stability Detection algorithms Buildings Testing Aerodynamics computer vision Noise robustness Estimation error Adaptive control

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H/sub /spl infin// vibration control of active suspension for automotive application

H/sub /spl infin// vibration control of active suspension fo...

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SICE Annual Conference

作者： A. Kanbolat Y. Okuyama F. Takemori L. Gianone S. Horvat J. Bokor Department of Information and Knowledge Engineering Facult of Engineering Tottori University Japan Tottori Daigaku Tottori JP Dept. of Inf. & Knowledge Eng. Tottori Univ. Japan Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences Hungary Department of Transpoi-talion Engineering Technical University of Budapest Hungary

This paper deals with simultaneous control of acceleration transmission, wheel load fluctuation, suspension deflection and sprung mass displacement. The control theory is based on the robust H/sub /spl infin// control theory with the consideration of the modeling errors lumped into an unstructured uncertainty acting on the unperturbed plant. The design method is new and powerful for electronic car suspension's control systems, as it presents a new approach to the designers for the computation of a controller maintaining robust stability while guaranteeing the performance in a wide frequency range, even in the case of the controller is applied to the actual plant. Additionally, the paper emphasizes that the assumptions in the modeling step may lead to unrealistic control designs and, as an example, the effect of the rigidity assumption on the behavior of the open loop system is discussed.

关键词： control systems control theory Open loop systems Displacement control Weight control Acceleration Wheels Fluctuations Robust control Power system modeling

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Progressive watermarking techniques with genetic algorithms

Progressive watermarking techniques with genetic algorithms

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International Carnahan Conference on Security Technology

作者： H.-C. Huang J.-S. Pan C.-S. Shieh F.-H. Wang Dept. of Electronics Engineering National Chiao Tung University Hsinchu Taiwan R.O.C. Department of Automatic Test and Control Harbin Institute of Technology Harbin P.R.C. Dept. Electronic Eng. Nat'1 Kaohsiung Univ. of Applied Sciences Kaohsiung Taiwan R.O.C. School of Electrical and Information Eng. University of South Australia Adelaide Australia

An innovative watermarking scheme based on progressive transmission with genetic algorithms (GA) is proposed. We implement the watermarking embedding and extraction system in the discrete cosine transform (DCT) domain, and apply the JPEG spectral selection mode for progressive transmission. By employing GA with a proper fitness function into the watermarking system, both the watermark imperceptibility and watermark robustness requirements are considered and optimized. In addition, the embedded watermark can be partly extracted in the receiver side even when the watermarked image is being transmitted. Simulation results show both the robustness and the effectiveness of progressive transmission under different attacking schemes and different bandwidth variations.

关键词： Watermarking Genetic algorithms Frequency Robustness PSNR Discrete cosine transforms Image restoration Signal resolution Low pass filters Filtering

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Assessment of Integrating Evacuated Tube-Based Domestic Electric/Solar Water Heater with an Aluminum Reflector for Managing Electrical Consumption

SSRN

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SSRN 2023年

作者： Sabry, Ahmad H. Al-Dujaili, Ayad Q. Oleiwi, Bushra Kadhim Alkubaisi, Yaser Mahmood Humaidi, Amjad J. Electrical Engineering Technical College Middle Technical University Baghdad Iraq Department of Control and Systems Engineering University of Technology-Iraq Baghdad Iraq Department of Computer Engineering Al-Nahrain University Al Jadriyah Bridge Baghdad64074 Iraq Department of Sustainability Management Dubai Academic Health Corporation Dubai4545 United Arab Emirates Control and Systems Eng. Dept. University of Technology Baghdad Iraq

Most places in the world have seen rapid increases in the need for power. It is essential to look for alternatives and energy-saving technologies because traditional fossil fuel power plants emit pollution in addition to the electricity they produce. This work considers a multi-generational heating system with the hybrid Electric/Solar Water Heaters (ESWHs) to replace electric water heaters (EWH)by combining the ESWH with an Aluminum reflector. This work experimental discusses the performance of the ESWH and the influence of placing a reflector plate underneath the evacuated tubes in Baghdad-Iraq. A test procedure to heat the water to a specified heating temperature over the whole day period was conducted to analyze the daily power consumption profile of the system. Four operational scenarios have been conducted including the mode;the ESWH as a solar water heater, ESWH as an electric water heater, ESWH without a reflector, and ESWH with a reflector plate. The experimental analysis confirmed that the presented multi-generational heating configuration could contribute to energy sustainably. The developed multi-generational heating system achieved an improvement in annual energy consumption of 15.4% over the hybrid electric/solar water heater and 46.2% over the traditional electrical water heater. © 2023, The Authors. All rights reserved.

关键词： Energy conservation

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