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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31-40 订阅

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The Remotely controlled and Programmable control Systems of Process and Positioning - selected issues 1

The Remotely Controlled and Programmable Control Systems of ...

引用

proceedings first int conf event based control commu signal processing

作者： Skala, Aleksander AGH Univ Sci & Technol Dept Power Elect & Automat Energy Convers Syst Fac Elect Engn Automat Comp Sci & Biomed Engn Krakow Poland

ISBN: (纸本)9781467378888

The use of supervising of position control in modern industrial automation and building automation systems is becoming more and more common. In addition to basic features and reliability of these systems, increasingly important in their functionalities are opportunities for inter-communication and exchange the process data with other subsystems, visualization of their work or archiving of this data. The interesting specifics of those particular systems are those executed as a unique solution for scientific purposes. This paper based on selected, completed projects, presents the demands of modern automation and control systems - hardware and software system solutions to achieve their desired functionality. It presents both: a way to integrate various systems at the hardware level, but also a way of software objects and communication protocols used for development of control of the whole system.

关键词： automation system positioning system position control PLC controller SCADA system communication protocol visualization of process

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Data Sampling and processing: Uniform vs. Non-Uniform Schemes 1

Data Sampling and Processing: Uniform vs. Non-Uniform Scheme...

引用

proceedings first int conf event based control commu signal processing

作者： Beyrouthy, Taha Fesquet, Laurent Rolland, Robin Univ Grenoble 1 Grenoble INP CNRS TIMA Lab Grenoble France Univ Grenoble 1 Grenoble INP CIME Nanotech Grenoble France

ISBN: (纸本)9781467378888

It has been shown in previous works that non-uniform sampling and processing is a better scheme than the uniform sampling to sample and process low activity signals. Non-uniform sampling technique generates fewer samples, which means less data to process and lower power consumption. Furthermore, asynchronous logic is known to be data-driven. It proves to be more adapted to the non-uniform sampling than synchronous logic. It is thus a better alternative to design low power data-processing circuits. In this paper, we present an overview of the non-uniform sampling scheme. It also describes the architectures of a processing function (Finite Impulse Response filter) in synchronous and asynchronous technologies. These circuits have been implemented on an Altera EP2C8 FPGA in order to extract and compare their activities profiles.

关键词： non-uniform sampling and processing Asynchronous logic FIR filter FPGA

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Distributed event-triggered Output Feedback control with Cloud-assisted Observer 1

Distributed Event-triggered Output Feedback Control with Clo...

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proceedings first int conf event based control commu signal processing

作者： Fujita, Kohei Ushio, Toshimitsu Osaka Univ Grad Sch Engn Sci Suita Osaka 565 Japan

ISBN: (纸本)9781467378888

Recent rapid development of information and communication technology enables cloud computing to be utilized in many engineering applications. A state estimation of a large-scale system consisting of several subsystems needs a large amount of computational resources. So, this paper proposes an observer that estimates all states of the system using cloud computing. We will call such an observer a cloud-assisted observer. A data network is used to transmit outputs of the subsystems from local sensors to the observer and control inputs from the observer to local actuators. To reduce the amount of the data transmission, we propose a distributed event-triggered control method, where two kinds of triggering mechanisms are used: one for local sensors and the other for the observer. Then, we show that the input-to-state stability of the extended system consisting of the controlled large-scale system and the observer. In addition, we show that triggering periods of all subsystems and the cloud-assisted observer bounded below by positive constants. Finally, we perform a simulation to show the input-to-state stability of the extended system.

关键词： Cloud computing control systems Large-scale systems Observers Sensors Stability analysis

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event-based and time-triggered energy consumption data acquisition in building automation 1

Event-based and time-triggered energy consumption data acqui...

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proceedings first int conf event based control commu signal processing

作者： Jachimski, Marcin Mikos, Zbigniew Wrobel, Grzegorz Hayduk, Grzegorz Kwasnowski, Pawel AGH Univ Sci & Technol Dept Power Elect & Energy Control Syst Krakow Poland

ISBN: (纸本)9781467378888

control systems in building automation influence achieved energy efficiency of the buildings. One of the measures that is used by control systems is electric energy usage. The paper deals with the subject of automatic data acquisition of electricity consumption not only for the purpose of accounting the energy consumers, but also for using these data in building control systems in order to achieve better building energy efficiency. event-based and time-triggered energy consumption data acquisition was taken into account and compared. Accuracy, average data transmission load and possible delays were investigated. Three simple assessment factors (called influence and benefits factors): resolution change factor, average data rate change factor and data transmission density change factor were proposed for evaluation of above parameters. For the purpose of research, dedicated computing method of converting actual electricity meter readings data set to: (1) time triggered data sets with various periods (resampling) and (2) send-on delta data sets with various energy deltas, was also developed.

关键词： event-driven data acqusition automatic meter reading send-on-delta readings time periodic readings energy consumption building automation smart grid BACS

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Fast Pipeline 128x128 Pixel Spiking Convolution Core for event-Driven Vision processing in FPGAs 1

Fast Pipeline 128x128 Pixel Spiking Convolution Core for Eve...

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proceedings first int conf event based control commu signal processing

作者： Yousefzadeh, A. Serrano-Gotarredona, T. Linares-Barranco, B. CSIC IMSE CNM Inst Microelect Sevilla Seville Spain Univ Seville Seville Spain

ISBN: (纸本)9781467378888

This paper describes a digital implementation of a parallel and pipe lined spiking convolutional neural network (S-ConvNet) core for processing spikes in an event-driven system. event-driven vision systems use typically as sensor some bio-inspired spiking device, such as the popular Dynamic Vision Sensor (DVS). DVS cameras generate spikes related to changes in light intensity. In this paper we present a 2D convolution event-driven processing core with 128x128 pixels. S-ConvNet is an event-Driven processing method to extract event features from an input event flow. The nature of spiking systems is highly parallel, in general. Therefore, S-ConvNet processors can benefit from the parallelism offered by Field Programmable Gate Arrays (FPGAs) to accelerate the operation. Using 3 stages of pipeline and a parallel structure, results in updating the state of a 128 neuron row in just 12ns. This improves with respect to previously reported approaches.

关键词： Spiking Convolutional Neural Networks DVS Artificial Retina FPGA Parallel processing

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Trace-based Simulation Framework Combining Message-based and Shared-Memory interactions in a Time-Triggered Platform 1

Trace-based Simulation Framework Combining Message-Based and...

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proceedings first int conf event based control commu signal processing

作者： Owda, Zaher Obermaisser, Roman Univ Siegen D-57068 Siegen Germany

ISBN: (纸本)9781467378888

Multi-Processor Systems-on-a-Chip (MPSoC) based on time-triggered on-chip networks facilitate fault isolation, temporal predictability and mixed-criticality integration. In mixed-criticality systems, a shared memory can be realized on top of time-triggered message passing to effectively support heterogeneous applications with different interaction paradigms. This paper presents a simulation environment of such an MPSoC combining message-based and shared-memory interactions. We present SystemC simulation building blocks for the application cores, network interfaces and the time-triggered network-on-a-chip. The behavior of the application cores is described by Transaction-Level Modeling (TLM). We generate traces from the application software or from benchmarks, which serve as input for the access to the network interfaces. The simulation framework is evaluated using a realistic case study based on SPLASH-2 and PARSEC application benchmarks. The simulation framework is essential for early validation and design space exploration of mixed-criticality systems. The high abstraction level provided by TLM and traces ensures high simulation speeds.

关键词： Benchmark testing Computational modeling Logic gates Multicore processing Network-on-chip Schedules Sockets

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event-based Synchronization in Biology: Dynamics of Pulse Coupled Oscillators 1

Event-based Synchronization in Biology: Dynamics of Pulse Co...

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proceedings first int conf event based control commu signal processing

作者： Proskurnikov, Anton V. Cao, Ming Univ Groningen ENTEG Inst NL-9700 AB Groningen Netherlands St Petersburg State Univ Inst Problems Mech Engn RAS St Petersburg Russia ITMO Univ St Petersburg Russia

ISBN: (纸本)9781467378888

The principles of event-based control appear to be a backbone of many self-coordinating natural systems. Populations of flashing fireflies and cells of the cardiac pacemakers are believed to reach synchrony via event-based interactions, known as the pulse coupling. Synchronization via pulse coupling is also widely used in wireless sensor networks, allowing to avoid the packet exchange. In spite of serious attention to networks of coupled oscillators, there is a lack of results on their synchronization under general topology and phase-response curves. The most general, to the best of the authors' knowledge, result of this type (Wang et al., 2012) establishes synchronization of oscillators with a delay-advance phase-response curve under the assumption of strongly connected network topology. In this paper we relax the latter assumption to the existence of an oriented spanning tree, which is also necessary for the synchronization, being commonly adopted in multi-agent control.

关键词： event-based control oscillators synchronization pulse coupling

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Optimal-Sampling-inspired Self-Triggered control 1

Optimal-Sampling-inspired Self-Triggered Control

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proceedings first int conf event based control commu signal processing

作者： Velasco, Manel Marti, Pau Bini, Enrico Univ Politecn Cataluna Dept Automat Control E-08028 Barcelona Spain Scuola Super Sant Anna Pisa Italy

ISBN: (纸本)9781467378888

Self-triggered control is an appealing sampling strategy that promises to preserve the same control performance as traditional (periodic) sampling, yet consuming less computing resource by executing the controller less frequently. While the stability of self-triggered controllers is often addressed, their capacity to actually reduce the cost is more difficult to be evaluated. Inspired by a recent result on the optimal density of the sampling instants that minimizes the control cost, in this paper we propose a new self-triggered control strategy. The proposed sampling rule is extremely simple and effective. Significant cost reductions compared to the optimal periodic controller are shown even with larger minimum intersample separation. Thanks to the simplicity of the sampling rule, we also implemented the proposed self-triggered controller over a physical plant. The experimental results are aligned with the theoretical ones.

关键词： Aerospace electronics Approximation methods Eigenvalues and eigenfunctions MIMICs Resource management Sampling methods Standards

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IR real-time Analyses for PV system monitoring by Digital Image processing Techniques 1

IR real-time Analyses for PV system monitoring by Digital Im...

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proceedings first int conf event based control commu signal processing

作者： Aghaei, M. Gandelli, A. Grimaccia, F. Leva, S. Zich, R. E. Politecn Milan Dept Energy Milan Italy

ISBN: (纸本)9781467378888

PV modules as main component of PV system might be subjected to various internal or external stresses hence monitoring and maintenance are a crucial issue to assure PV module lifetime and appropriate energy performance. Current experimental research proposes an applicable approach of digital image processing technique in PV module inspection by thermography assessment. For this purpose, an algorithm was designed to perform IR images analysis. The monitoring was performed in order to detect defects and failures due to particular events on the PV systems by thermography analysis. The investigation was carried out by mounted IR thermo-camera (Flir A35) on a light Unmanned Aerial System (UAS) in Solar Tech Laboratory. The captured IR-images have been processed by proposed algorithm to determine specific defect and degradation percentage. The results have proven that digital image processing technique is very useful and reliable for IR-image analysis to identify possible defects during the PV module inspection procedure.

关键词： Photovoltaic (PV) solar energy PV systems Digital image processing Thermography analysis Unmanned Aerial System (UAS) IR analysis

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Bioinspired event-driven collision avoidance algorithm based on optic flow 1

Bioinspired event-driven collision avoidance algorithm based...

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proceedings first int conf event based control commu signal processing

作者： Milde, Moritz B. Bertrand, Olivier J. N. Benosman, Ryad Egelhaaf, Martin Chicca, Elisabetta Univ Bielefeld Cognit Interact Technol Ctr Excellence Bielefeld Germany Univ Bielefeld Neurobiol Bielefeld Germany Univ Paris 06 Inst Vis Paris France Univ Bielefeld Fac Technol Bielefeld Germany

ISBN: (纸本)9781467378888

Any mobile agent, whether biological or robotic, needs to avoid collisions with obstacles. Insects, such as bees and flies, use optic flow to estimate the relative nearness to obstacles. Optic flow induced by ego-motion is composed of a translational and a rotational component. The segregation of both components is computationally and thus energetically expensive. Flies and bees actively separate the rotational and translational optic flow components via behaviour, i.e. by employing a saccadic strategy of flight and gaze control. Although robotic systems are able to mimic this gaze-strategy, the calculation of optic-flow fields from standard camera images remains time and energy consuming. To overcome this problem, we use a dynamic vision sensor (DVS), which provides event-based information about changes in contrast over time at each pixel location. To extract optic flow from this information, a plane-fitting algorithm estimating the relative velocity in a small spatio-temporal cuboid is used. The depth-structure is derived from the translational optic flow by using local properties of the retina. A collision avoidance direction is then computed from the event-based depth-structure of the environment. The system has successfully been tested on a robotic platform in open loop.

关键词： Biomedical optical imaging Collision avoidance Optical computing Optical imaging Optical sensors Robots Voltage control

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