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检索条件"任意字段=Proceedings First Int Conf Event Based Control Commu Signal Processing"

共 45 条记录，以下是1-10 订阅

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Reconstruction of event-based Sampled signal using Adaptive Weights Method 1

Reconstruction of Event-Based Sampled Signal using Adaptive ...

引用

proceedings first int conf event based control commu signal processing

作者： Grybos, Anna AGH Univ Sci & Technol Fac Appl Math Al Mickiewicza 30 PL-30059 Krakow Poland

ISBN: (纸本)9781467378888

The paper focuses on the event-driven signal processing and the application of irregular sampling theory and frames to the problems of the event-driven sampling and signal reconstruction. Our approach consists of the application of the frame algorithm enhanced with adaptive weights method to the reconstruction of the signal from the irregular samples obtained by the send-on-delta sampling scheme. We analyse the examples of signal recovery and set some perspectives for the further development.

关键词： Algorithm design and analysis Approximation methods Image reconstruction signal processing signal processing algorithms Wireless sensor networks

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Efficient High Speed signal Estimation with Neuromorphic Vision Sensors 1

Efficient High Speed Signal Estimation with Neuromorphic Vis...

引用

proceedings first int conf event based control commu signal processing

作者： Mueller, Erich Censi, Andrea Frazzoli, Emilio

ISBN: (纸本)9781467378888

Recently developed neuromorphic vision sensors present a high speed, event-based alternative to conventional vision in robotic systems. We present a method for the design of simple, low computation estimators that take advantage of the remarkable properties of these sensors to provide low latency, high bandwidth sensing for feedback control of fast dynamical systems. It is shown that under certain circumstances a simple transformation of the event stream from such a sensor can allow it to be treated as an asynchronous configuration sensor, with minimal computation required to achieve high speed signal reconstruction. These results are applicable to any robotic control problems requiring high performance visual feedback control with low computation.

关键词： Brightness Neuromorphics Noise Robot sensing systems Sensor systems Voltage control

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An event Driven Technique for Filtering Computational Complexity Reduction 1

An Event Driven Technique for Filtering Computational Comple...

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proceedings first int conf event based control commu signal processing

作者： Qaisar, Saeed Mian Effat Univ Jeddah 21478 Saudi Arabia

ISBN: (纸本)9781467378888

This work is a contribution to enhance the signal processing chain required in mobile systems like satellites, cell phones, biomedical implants remote motors, etc. The system is powered by a battery therefore it must be power efficient. Filtering is a basic operation, almost required in every signal processing system. The classical filtering is time-invariant, the sampling frequency and the filter order remains unique. Therefore it can render a useless increase of the processing activity, especially in the case of sporadic signals. In this context an adaptive rate filtering technique, based on an event driven sampling is devised. It adapts the sampling frequency and the filter order by analysing the input signal characteristics. It correlates the processing activity to the signal variations. The computational complexity and the output quality of the proposed technique are compared to the classical one for a speech signal. Results show a drastic computational gain, of the proposed technique compared to the classical one, along with a comparable output quality.

关键词： Computational efficiency event driven sampling event driven processing Activity selection processing error

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Guaranteed H₂ Performance in Distributed event-based State Estimation 1

Guaranteed <i>H</i><sub>2</sub> Performance in Distributed E...

引用

proceedings first int conf event based control commu signal processing

作者： Muehlebach, Michael Trimpe, Sebastian Swiss Fed Inst Technol Inst Dynam Syst & Control Zurich Switzerland Max Planck Inst Intelligent Syst Autonomous Mot Dept Stuttgart Germany

ISBN: (纸本)9781467378888

Multiple agents sporadically exchange data over a broadcast network according to an event-based protocol to observe and control a dynamic process. The synthesis problem of each agent's state estimator and event generator, which decides whether information is broadcast or not, is addressed in this paper. In particular, a previously proposed LMI-synthesis procedure guaranteeing closed-loop stability is extended to incorporate an H-2 performance measure. The improved estimation performance of the extended design is illustrated in simulations of an inverted pendulum, which is stabilized by two agents.

关键词： control systems Measurement uncertainty Observers Stability criteria Time measurement

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event-based Stabilizing controller Using a State Observer 1

Event-Based Stabilizing Controller Using a State Observer

引用

proceedings first int conf event based control commu signal processing

作者： Meslem, Nacim Prieur, Christophe Gipsa Lab Dept Automat Control 11 Rue MathGrenoble Compus BP46 F-38402 St Martin Dheres France

ISBN: (纸本)9781467378888

In order to reduce communication in network control systems, it is of great interest to be able to synthesize event-triggered control laws from continuous-time controls. This work proposes a new rule to design event-based stabilizing controllers for linear systems. More precisely, based on a given reference system, a state observer, and a quadratic Lyapunov-like function, an event-based sampling algorithm has been designed. In this framework, the stability and the convergence rate of the controlled system towards its steady state depend on the dynamical properties of the reference system and the state observer and the used feedback gain. In addition, the event-triggering condition does not require the knowledge of the state vector of the process to be stabilized.

关键词： Asymptotic stability Convergence Linear systems Observers Trajectory Tuning

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Comparison of different sampling schemes for wireless control subject to packet losses 1

Comparison of different sampling schemes for wireless contro...

引用

proceedings first int conf event based control commu signal processing

作者： Lindberg, Carl-Fredrik Isaksson, Alf J. ABB Corp Res SE-72178 Vasteras Sweden

ISBN: (纸本)9781467378888

Three different approaches to reduce the amount of communication in wireless control subject to packet losses have been evaluated in an extensive simulation study. The sampling approaches are: slow periodic, event-based and self-triggered sampling. They are ranked based on their integrated absolute error (IAE) control performance and also compared with fast periodic sampling. The three approaches have surprisingly equal control performance in the nominal case (without packet losses) for a wide range of test scenarios (process models, controller tunings etc.). With packet losses the importance of re-transmissions becomes evident.

关键词： Wireless control Sampling schemes Packet loss event-based sampling Self-triggered sampling Periodic sampling

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Distributed event-triggered control for Voronoi Coverage 1

Distributed Event-triggered Control for Voronoi Coverage

引用

proceedings first int conf event based control commu signal processing

作者： Hayashi, Naoki Muranishi, Yu Takai, Shigemasa Osaka Univ Grad Sch Engn Div Elect Elect & Informat Engn Suita Osaka 565 Japan

ISBN: (纸本)9781467378888

This paper considers event-triggered control for the centroidal Voronoi coverage problem. In the proposed method, each agent updates its input when the error between the state and the centroid of its Voronoi cell at the last trigger time and those at the current time exceeds a threshold. We show that agents achieve the centroidal Voronoi coverage by the proposed dynamics in a distributed way. We also show that a trigger interval of each agent is strictly positive if the velocity of the centroid of its Voronoi cell is sufficiently slow.

关键词： control systems Mobile communication Multi-Agent systems Robot kinematics Robot sensing systems Topology

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Cooperative, event-driven control of a football table 1

Cooperative, event-driven control of a football table

引用

proceedings first int conf event based control commu signal processing

作者： Hoeme, Stephan Theuerkauf, Klaus Zipper, Holger Univ Magdeburg Inst Automat Engn Magdeburg Germany Inst Automat & Kommunikat eV Ifak Magdeburg Germany

ISBN: (纸本)9781467378888

Time critical systems like all modern electric drives pose high demands onto control devices. For easier reconfiguration and better performance by load balancing the distribution of control is introduced. While the synchronization of algorithms is already hard on single control nodes the data handling on distributed systems is even harder. To approach this challenge the data handling could be solved by an event-driven middleware that propagates the data on change through the system. The possibilities of an event driven middleware are shown in a rebuild automated tabletop football table. One opponent is played by a distributed control with computer vision and electric drives to handle the bars. This project and its underlaid event based middleware is presented in this article.

关键词： cooperative control middleware DOME virtual commissioning

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The Street Lighting control System Application and Case Study 1

The Street Lighting Control System Application and Case Stud...

引用

proceedings first int conf event based control commu signal processing

作者： Ozadowicz, Andrzej Grela, Jakub AGH Univ Sci & Technol Fac Elect Engn Automat Comp Sci & Biomed Engn Krakow Poland

ISBN: (纸本)9781467378888

Nowadays, control systems in outdoor and street lighting installations are more and more popular. Many of the outdoor lighting installations exist in direct precincts of buildings with building automation and control systems (BACS). In this paper we present case study with an experimental BACS of outdoor lighting system based on international standard ISO/IEC 14908. The event-based paradigm is the key feature of it. Following the event-based approach we have organized integrated platform to control our experimental outdoor lighting system. In our experiments we have been focused on communication reliability, easy integration of the control system and energy consumption reduction. We describe proposed functional strategies, the performed experiments and analyse the results. The first stages of this evaluation have shown that the event-based BACS provide higher comfort and energy reduction in the outdoor lighting.

关键词： street lighting LonWorks building automation event-based control

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event-based CODING OF STILL IMAGES USING A BIO-INSPIRED FRAME 1

EVENT-BASED CODING OF STILL IMAGES USING A BIO-INSPIRED FRAM...

引用

proceedings first int conf event based control commu signal processing

作者： Doutsi, Effrosyni Fillatre, Lionel Antonini, Marc Gaulmin, Julien Univ Nice Sophia Antipolis CNRS I3S UMR 7271 F-06900 Sophia Antipolis France 4G TECHNOL F-06370 Mouans Sartoux France

ISBN: (纸本)9781467378888

The growing interest of event-based systems has influenced image processing field and is expected to be a groundbreaking architecture for image and video compression. The human visual system is an efficient event-based biological system which is a source of inspiration to design an event-based codec. This paper introduces a bio-inspired encoding architecture for still images. A bio-inspired filter is first applied to the input image and then the retinal-filtered image is fed to an integrate And Fire (IAF) sampler. The spike train produced by the IAF sampler is decoded in order to reconstruct the still image at the receiver. We prove that the retinal filter has a frame structure, so the reconstruction is almost perfect provided that the IAF sampling is sufficiently fine.

关键词： event-based systems bio-inspired processing spatiotemporal filter integrate And Fire sampling

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