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International Journal of control and Automation 2013年第2期6卷 175-184页

作者： Jia, Song Bailing, Wang Xiyuan, Peng Jianfeng, Li Cheng, Zhong School of Information and Electrical Engineering Harbin Institute of Technology at Weihai Shandong China School of Computer Science and Technology Harbin Institute of Technology at Weihai Shandong China Automatic Test and Control Institute Harbin Institute of Technology Harbin China

Fault recovery is vital to WSNs since node death is a typical fault. Aiming to recover the "coverage hole", a Recovery Algorithm based on Minimum Distance Redundant Nodes (MDRN) is proposed in this paper. By employing redundant nodes carefully, the recovery algorithm is deployed on the sink node with unconstrained energy consumption which knows the locations of all active nodes and redundant nodes in the WSNs. Simulation results demonstrate that, by choosing appropriate number of redundant nodes, this algorithm will have great recovery accuracy and coverage quality, also achieve the purpose of prolonging the lifecycle of WSNs.

关键词： Energy utilization

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Real-time 3D path and map estimation using a Multi-Camera system and a FastSLAM algorithm

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Sensors and Transducers 2013年第SPEC. ISSUE期24卷 58-66页

作者： Netramai, Chayakorn Roth, Hubert Sachenko, Anatoly The Sirindhorn International Thai-German Graduate School of Engineering King Mongkut's University of Technology North Bangkok 1518 Pracharat 1 Road Bangsue Bangkok 10800 Thailand Institute of Automatic Control Engineering Department of Electrical Engineering and Computer Science University of Siegen Hölderlin str. 3 57076 Siegen Germany Department of Computer Science and Econometrics Silesian University of Technology Roosevelta St. 26-28 Zabrze 41-800 Poland

This work proposed a real-time 3D map building system based on the visual odometry information derived from a Multi-Camera hardware. The accurate odometry information and images derived from the proposed intuitive Multi-Camera hardware, so called Multi-Camera Unit (MCU), are used as an input for the 3D map building process which cooperates the FastSLAM algorithm as a map and path estimator. Experiment results show that the proposed system yield good estimation of 3D path and map in real-time. Using the estimated 3D path and map, a showcase application of 3D photorealistic map building can be implemented with ease where it can be run on top of all process in real-time manner using a standard PC. © 2013 IFSA.

关键词： Vision

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Implementation of an inexpensive EEG headset for the pattern recognition purpose

Implementation of an inexpensive EEG headset for the pattern...

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2013 IEEE 7th International Conference on Intelligent Data Acquisition and Advanced Computing Systems, IDAACS 2013

作者： Kawala-Janik, Aleksandra Podpora, Michal Pelc, Mariusz Piatek, Pawel Baranowski, Jerzy University of Greenwich School of Computing and Mathematical Sciences London United Kingdom Opole University of Technology Faculty of Electrical Engineering Automatic Control and Informaics Opole Poland AGH University of Science and Technology Faculty of Electrical Engineering Automatics Computer Science and Biomedical Engineering Krakow Poland

ISBN: (纸本)9781479914265

There are many types of bio-signals with various control application prospects. In this work possible control application domain of electroencephalographic signal obtained from an easily available, inexpensive EEG headset - Emotiv EPOC was presented. This work also involved application of an embedded system platform. That solution caused limits in choosing an appropriate signal processing method, as embedded platforms characterise with a little efficiency and low computing power. Potential implementation of the embedded platform enables to extend the possible future application of the proposed BCI. It also gives more flexibility, as the platform is able to simulate various environments. In this work traditional, statistical methods were neither used nor described. © 2013 IEEE.

关键词： Brain computer interface

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MPPT Algorithm for Photovoltaic Panel Based on Augmented Takagi-Sugeno Fuzzy Model

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International Scholarly Research Notices 2014年第1期2014卷

作者： Hafedh Abid Ahmed Toumi Mohamed Chaabane Laboratory of Sciences and Techniques of Automatic Control & Computer Engineering (Lab-STA) National School of Engineering of Sfax University of Sfax P.O. Box 1173 3038 Sfax Tunisiauss.rnu.tn

This paper deals with the Maximum Power Point Tracking (MPPT) for photovoltaic energy system. It includes photovoltaic array panel, DC/DC converter, and load. The operating point for photovoltaic energy system depends on climatic parameters and load. For each temperature and irradiation pair, there exists only one optimal operating point which corresponds to the maximum power transmitted to the load. The photovoltaic energy system is described by nonlinear equations. It is transformed into an augmented system which is described with a Takagi-Sugeno (T-S) fuzzy model. The proposed MPPT algorithm which permits transfering the maximum power from the panel to the load is based on Parallel Distributed Compensation method (PDC). The control parameters have been computed based on Linear Matrix Inequalities tools (LMI). The Lyapunov approach has been used to prove the stability of the system. Some reliable simulation results are provided to check the efficiency of the proposed algorithm.

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Reducing communication and actuation in distributed control systems

Reducing communication and actuation in distributed control ...

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IEEE Annual Conference on Decision and control

作者： M. Guinaldo D. Lehmann J. Sanchez S. Dormido K. H. Johansson Department of Computer Science and Automatic Control at UNED Spain School of Electrical Engineering Royal Institute of Technology (KTH) Sweden

ISBN: (纸本)9781467357159

This paper addresses the problem of reducing the number of transmissions and control updates in a distributed control network of interconnected linear systems. Each node in the network decides when to transmit its state through the network and when to update the control law. Both decisions are event-driven and based on local information. It is shown that the stability of the system is preserved and the state of the system converges to a small region around the origin, whose size depends on the parameters of the transmission and control update trigger functions. A strictly positive lower bound for the inter-event times is derived. The results are illustrated through simulations showing the effectiveness of the proposed approach.

关键词： Distributed control systems control law local information. System stability control systems Strictly positive Communication Research even-driven program decentralised control

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A novel design of parallel and high-speed signal processor architecture for PD radar

A novel design of parallel and high-speed signal processor a...

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IET International Radar Conference 2013

作者： Yuan, Changshun Wang, Jun Bi, Yanxian Zhang, Yuxian School of Electronic and Information Engineering Beihang University Beijing 100191 China Automatic Control and Computer Simulation Liaoning 125001 China

ISBN: (纸本)9781849196031

In this paper, a kind of high speed and parallel hardware architecture is designed with one TMS320C6678 and one XC6VSX315T. This system is used for the pulsed Doppler radar. To map the algorithm effectively, pipeline optimization on system and instruction levels are adopted, and various factors are taken into consideration, such as system complexity, communication between the processors, bandwidth of output signal.

关键词： Doppler radar

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Closed-loop control of a novel 2-DOF MEMS nanopositioner with electrothermal actuation

Closed-loop control of a novel 2-DOF MEMS nanopositioner wit...

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6th IFAC Symposium on Mechatronic Systems, MECH 2013

作者： Fowler, Anthony G. Rakotondrabe, Micky Moheimani, S.O. Reza School of Electrical Engineering and Computer Science University of Newcastle Callaghan NSW 2308 Australia FEMTO-ST Institute UMR CNRS 6174 - UFC / ENS MM / UTBM Automatic Control and Micro-Mechatronic Systems Depart. AS2M 25000 Besancon France

ISBN: (纸本)9783902823311

The design, characterization and control of a novel 2-DOF MEMS nanopositioner is presented, with Z-shaped electrothermal actuators being used to position the device's central stage. Whereas the more commonly-used V-shaped electrothermal actuator only allows displacements in one direction, the design of the Z-shaped beams used in the presented device allows two actuators to be coupled back-to-back to achieve bidirectional motion along each of the two axes. Testing of the device shows that stage displacements in excess of ± 5 μm are achievable for both the x and y axes. The device features integrated displacement sensors based on polysilicon electrothermal heaters, which are supplied with an electrical bias voltage that results in Joule heating. The resistance of each heater varies depending on the position of the central stage, with two heaters being used per axis in a differential configuration. The displacement measurements are utilized as part of an implemented closed-loop control scheme that uses both feedforward and feedback mechanisms based on the principle of internal model control. Experimental testing shows that the use of the controller enhances the static and dynamic performance of the system, with particular improvements being seen in the device's reference tracking, response time and cross-coupling rejection. © 2013 IFAC.

关键词： Feedback

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Active piezoelectric shunt control of an Atomic Force Microscope micro-cantilever

Active piezoelectric shunt control of an Atomic Force Micros...

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Australian control Conference (AUCC)

作者： Matthew W. Fairbairn Philipp Müller S. O. Reza Moheimani School of Electrical Engineering and Computer Science The University of Newcastle Callaghan NSW Australia Institute for Systems Theory and Automatic Control The University of Stuttgart Germany

The benefits of decreasing the quality (Q) factor of an Atomic Force Microscope (AFM) micro-cantilever, when operating in tapping mode, using passive piezoelectric shunt control have been previously demonstrated. A passive electrical impedance is placed in series with the cantilever oscillation voltage to control the Q factor of the cantilever. The amount of Q factor reduction obtainable using this method is limited due to the passive nature of the shunt impedance. This work demonstrates that further decreases in the cantilever Q factor may be obtained through the use of an active impedance. The active impedance is designed in such a way that the piezoelectric shunt controller emulates a PPF controller in a displacement feedback loop. The damping obtained with this controller is compared with the maximum damping obtainable with a passive impedance.

关键词： Impedance Q-factor Frequency measurement Transfer functions Resonant frequency Frequency response Voltage measurement

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Development of parallel manipulator sit to stand assistive device for elderly people

Development of parallel manipulator sit to stand assistive d...

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2013 IEEE Workshop on Advanced Robotics and Its Social Impacts, ARSO 2013

作者： Salah, Omar Asker, Ahmed Fath El-Bab, Ahmed M. R. Assal, Samy M. F. Ramadan, Ahmed A. Sessa, Salvatore Abo-Ismail, Ahmed Egypt-Japan University of Science and Technology New Borg-El-Arab city Alexandria Egypt Mechanical Engineering Department Faculty of Engineering Assiut University Egypt Department of Production Engineering and Mechanical Design Faculty of Engineering Tanta University Alexandria Egypt Computer and Automatic Control Dept. Faculty of Engineering Tanta University Tanta Egypt Mechatronics and Robotics Dept. Egypt-Japan University of Science and Technology Egypt School of Creative Science and Engineering Waseda University Tokyo 168-8480 Japan

ISBN: (纸本)9781479923694

This paper describes a novel mobility assistive device under development in the Egypt-Japan University of Science and Technology (E-JUST). The proposed system can help patients who do not have enough physical strength on the lower limbs during sit to stand due to aging, diseases such as polymyositis and myopathy, and joint replacement surgery complications. It can follow the natural pattern of human motion during sit to stand providing assistance force under the shoulder. The overall device is compact and employees a parallel mechanism which provide more stiffness. Several experiments were carried out in a VICON room to calculate the human motion posture while sit to stand motion in addition estimate the trajectory of the end effector during assisting. computer simulation was built to verify the performance of the proposed system with the reference trajectory. © 2013 IEEE.

关键词： Mechanisms

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Implementation of an inexpensive EEG headset for the pattern recognition purpose

Implementation of an inexpensive EEG headset for the pattern...

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IEEE International Workshop on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications

作者： Aleksandra Kawala-Janik Michal Podpora Mariusz Pelc Pawel Piatek Jerzy Baranowski University of Greenwich School of Computing and Mathematical Sciences London United Kingdom Faculty of Electrical Engineering Automatic Control and Informaics Opole Poland Faculty of Electrical Engineering Automatics Computer Science and Biomedical Engineering Krakow Poland

关键词： Electroencephalography Headphones Signal processing Electrodes Noise measurement Pattern recognition MATLAB

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