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检索条件"任意字段=Conference on Advanced Signal Processing Algorithms"

共 3499 条记录，以下是3341-3350 订阅

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Architectural design simulation and silicon implementation of a very high fidelity decimation filter for sigma-delta data converters

Architectural design simulation and silicon implementation o...

引用

IEEE Instrumentation and Measurement Technology conference

作者： I. Kale R.C.S. Morling A. Krukowski D.A. Devine University of Westminster London UK

This paper reports on results from the algorithmic design and simulation of a two-path poly-phase decimation filter with 24-bit accuracy over the frequency range from dc to approximately 16 kHz. The filter is suited for very high precision data conversion applications, and has been designed for use with a fourth-order /spl Sigmaspl Delta/ modulator running at 4096 kHz. This paper also reports on the fixed-point architectural design, comparative bit-level simulations and silicon implementation.< >

关键词： Silicon Finite impulse response filter Digital filters Baseband Algorithm design and analysis Digital signal processing Passband signal processing algorithms signal resolution Filtering

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A fuzzy framework for distributed sensor data processing

A fuzzy framework for distributed sensor data processing

引用

IEEE Instrumentation and Measurement Technology conference

作者： H. Odeberg Department of Physics and Measurement Technology Liverpool of Polytechnic Sweden

In this paper, a unified approach towards the integration of sensor data is presented. Using a modified recursive least squares algorithm, variations in parameter location and measurement noise may be tracked. The introduction of fuzzy logic, and the subsequent development of operators especially suited for sensor integration, enables sensors of radically different nature to be combined in a consistent manner.< >

关键词： Data processing Sensor systems signal processing algorithms Histograms Noise measurement Fuzzy logic Probability Fuzzy sets Physics Statistical distributions

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DSP-based correction of spectrograms using cubic splines and Kalman filtering

DSP-based correction of spectrograms using cubic splines and...

引用

IEEE Instrumentation and Measurement Technology conference

作者： P. Brouard R.Z. Morawski A. Barwicz Department d'ingenierie Université du Québec à Trois Rivières QUE Canada Institute of Radioelectronics Warsaw University of Technology Warsaw Poland

Raw spectrograms are subject to systematic errors of an instrumental type that may be reduced provided a mathematical model of the instrumental imperfections is identified. It is assumed in the paper that this model has the form of an integral, convolution-type equation of the first kind whose kernel may be causal or not. The correction of the spectrograms consists in numerically solving this equation on the basis of the noisy data. Acquired by a spectrometer. An algorithm of correction is proposed which is based on the approximation of the solution with a spline function whose parameters are determined by means of a recursive Kalman-filter-based algorithm with a non-negativity constraint imposed on the set of feasible solutions. It is shown, using spectrophotometric data, that an improvement in the resolution of the spectrometer can be attained.< >

关键词： Spectrogram Kalman filters Spectroscopy Approximation algorithms Seismic measurements Instruments Integral equations Distortion measurement signal processing algorithms Digital signal processing

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Definition and analysis of an electronic device for synchronous circular sampling of locally periodic signals

Definition and analysis of an electronic device for synchron...

引用

IEEE Instrumentation and Measurement Technology conference

作者： G. D'Antona E. Ferrari A. Gandelli Dipartimento di Elettrotecnica Politecnico di Milano Italy Dipartimento di Elettrotecnica Politecnico di Milano Milano Italy

algorithms devoted to perform digital measurements in advanced instrumentation have sometimes to work with locally periodic signals sampled without an opportune signal synchronization. Errors introduced by this phenomenon are usually reduced and made negligible using a suitable signal windowing. When this solution is not available, circular sampling technique represents an efficient way to overcome the problem. The theory of circular sampling is analyzed in the context of the generalized sampling procedure. The relationships obtained guarantee that one and only one sequence satisfy the imposed sampling conditions. A device able to provide the sampling condition according to the above mentioned theory has been studied and designed.< >

关键词： Sampling methods signal sampling signal processing Frequency synchronization Measurement errors Discrete Fourier transforms Performance evaluation Instruments Time measurement Frequency measurement

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The modelling abilities of the binary CMAC

The modelling abilities of the binary CMAC

引用

International Joint conference on Neural Networks (IJCNN)

作者： M. Brown C.J. Harris Advanced Systems Research Group Department of Aeronautics and Astronautics Southampton University Southampton UK

The Albus CMAC has been widely used for signal processing and adaptive control tasks, although it is only recently that the learning rules have been properly understood and convergence results derived. The CMAC is a multi-dimensional tabular storage scheme which generates piecewise constant models. However, despite its simplicity the modelling capabilities of this network are very complex and many incorrect theories have recently been proposed. The foundations for a correct theory were recently proposed by the authors (1993), and this paper extends these results by showing that the modelling capabilities of different CMACs (varying the generalisation parameter or the overlay displacement vector) are different. It is also shown that the binary CMAC is able to model any additive mapping exactly, but is unable to reproduce a multiplicative function. This is achieved using the consistency equations and orthogonal functions which define the space of functions that a binary CMAC can and cannot model respectively, and they can also be used to generate a lower bound for the network's modelling error.< >

关键词： Lattices Equations signal processing algorithms Adaptive signal processing Multidimensional signal processing Adaptive control Error correction Stability Control system synthesis Nonlinear control systems

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A high performance IIR filter chip and its evaluation system

A high performance IIR filter chip and its evaluation system

引用

International conference on Application Specific Array Processors

作者： R.L. Walke R.A. Evans R.F. Woods G. Floyd K.W. Wood DRA Malvern Malvern Worcestershire UK Institute of Advanced Microelectronics Queen's University Belfast UK GEC Plessey Semiconductors Limited Plymouth UK Timestar Developments Limited Newcastle-Upon-Tyne UK

A highly flexible programmable IIR filter chip has been designed and fabricated to commercial requirements within a collaborative project involving several industrial partners. The device uses 8 highly regular 16 bit array multiplier-accumulators which have been pipelined to achieve an overall computational rate of 30 MHz using a 1 micron gate array process. Most significant bit first arithmetic has been employed to achieve the target 15 MHz sample rate whilst implementing an 8th order filter. The paper reviews the principles behind the filter chip and its architecture, and describes a modular system which has been built to facilitate its demonstration and evaluation.< >

关键词： IIR filters Finite impulse response filter signal processing algorithms Filtering Arithmetic Digital signal processing chips Pipeline processing Digital signal processing Sampling methods Delay

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Applied nonlinear control of an induction motor using digital signal processing

Applied nonlinear control of an induction motor using digita...

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IEEE conference on Control Technology and Applications (CCTA)

作者： T. von Raumer J.M. Dion L. Dugard Lab. d'Autom. de Grenoble CNRS St. Martin d'Heres France

The application of nonlinear input-output linearization techniques to the control of induction motors is presented. Practical issues concerning discrete time implementation, rotor flux observation and stator current limitation are presented. The use of a high speed digital signal processor (DSP) is particularly appropriate, facilitating a small sampling period and advanced control algorithms. The authors' control scheme is implemented on an industrial induction motor variable speed drive. Practical results are given showing the feasibility of the approach.< >

关键词： Induction motor drives Nonlinear systems Current control Digital signal processors Discrete time systems

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An application-specific processor dedicated to Kalman-filter-based correction of spectrometric data

An application-specific processor dedicated to Kalman-filter...

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IEEE Instrumentation and Measurement Technology conference

作者： A. Barwicz D. Massicotte Y. Savaria M.-A. Santerre R.Z. Morawski Département d'ingenierie Université du Quàbec a Trois-Riviéres QUE Canada École Polytechnique de Montreal Cegelec Industrial Controls Montreal QUE Canada Faculty of Electronics Institute of Radioelectronics Warsaw University of Technology Warsaw Poland

An application-specific processor dedicated to Kalman-filter-based measurand reconstruction in spectrometric applications is proposed. It is intended to act as co-processor of a host processor, performing relatively sophisticated processing of measurement data subject to systematic errors of an instrumental type and to random errors of various natures. It is basically designed for improving the resolution of spectrometric measurements commonly used in environmental laboratories, but it may be useful in other applications where similar processing of measurement data is required. Examples of applications of the processor in environmental measurements, its metrological advantages and limitations, as well as perspectives of its development, are presented.< >

关键词： Application specific processors signal processing algorithms Instruments Digital signal processors Mass spectroscopy Velocity measurement Very large scale integration Power system reliability Coprocessors Performance evaluation

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Fuzzy edge-oriented motion-adaptive noise reduction and scanning rate conversion

Fuzzy edge-oriented motion-adaptive noise reduction and scan...

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IEEE Asia-Pacific conference on Circuits and Systems

作者： M. Mancuso V. D'Alto R. Poluzzi Co.Ri.M.Me. Stradale Primosole Catania Italy SGS-Thomson Microelectronics Inc. Agrate Italy

To improve TV image quality without changing the current transmission standards, advanced soft-decision fuzzy logic techniques have been applied to remove noise affecting pictures and to avoid interlaced-scan-related ... 详细信息

关键词： Noise reduction Filtering signal processing algorithms Low pass filters Interpolation Image converters Image quality Fuzzy logic Gaussian noise signal to noise ratio

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Development of very small differential pressure transmitter

Development of very small differential pressure transmitter

引用

IEEE Instrumentation and Measurement Technology conference

作者： T. Tobita Y. Yamamoto M. Fukunaga T. Kobayashi S. Shimada S. Ugai A. Kouno M. Arai Instrument Division Hitachi and Limited Japan Hitachi Reserach Laboratories Hitachi and Limited Japan Mechanical Engineering Research Laboratories Hitachi and Limited Japan

This paper describes development of very small intelligent differential pressure transmitter using semiconductor multiple pressure sensor. The study focuses on the structural design, system and compensation algorithms to achieve the compact. A very small semiconductor pressure sensor based on piezoresistive gauge placed in the small sensing body converts three quantities to electric signal. The structural and response analysis of the sensing body to achieve the compact has been studied. The microprocessing unit compensates the output of transmitter of refering the three signal to calibration data and does it's self-diagnosis included the damage of sensor and sensing body.< >

关键词： Transmitters Intelligent sensors Instruments Sensor phenomena and characterization Temperature sensors Mechanical sensors signal analysis Process control signal processing Microprocessors

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