Search results for "sampled-data observer"

showing 4 items of 4 documents

Time-varying Sampled-data Observer with Asynchronous Measurements

2019

International audience; In this paper a time-varying observer for a linear continuous-time plant with asynchronous sampled measurements is proposed. The observer is contextualized in the hybrid systems framework providing an elegant setting for the proposed solution. In particular some theoretical tools are provided, in terms of LMIs, certifying asymptotic stability of a certain compact set where the estimation error is zero. We consider sampled asynchronous measurements that occur at arbitrary times in a certain window with an upper and lower bound. The design procedure, that we propose for the selection of the time-varying gain, is based on a constructive algorithm that is guaranteed to f…

0209 industrial biotechnologyObserver (quantum physics)02 engineering and technologyUpper and lower boundsElectronic mail[SPI]Engineering Sciences [physics]020901 industrial engineering & automationSample data observerExponential stabilitySettore ING-INF/04 - AutomaticaControl theorylinear matrix inequalities (LMIs)linear matrixElectrical and Electronic Engineeringlinear matrix inequalitiesMathematicsLinear systemlinear systemshybrid systemssampled-data observerComputer Science ApplicationsCompact spaceControl and Systems EngineeringAsynchronous communicationHybrid systemhybrid systemDiscrete asynchronous measurementdiscrete asynchronous measurementsdiscrete asynchronous
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State Observer with Round-Robin Aperiodic Sampled Measurements with Jitter

2021

International audience; A sampled-data observer is proposed for linear continuous-time systems whose outputs are sequentially sampled via non-uniform sampling intervals repeating a prescribed Round-Robin sequence. With constant sampling intervals (jitter-free case) we provide constructive necessary and sufficient conditions for the design of an asymptotic continuous-discrete observer whose estimation error is input-to-state stable (ISS) from process disturbances and measurement noise. We use a time-varying gain depending on the elapsed time since the last measurement. With non-constant sampling intervals (jitter-tolerant case), our design conditions are only sufficient. A suspension system …

0209 industrial biotechnologySequenceObserver (quantum physics)Noise (signal processing)020208 electrical & electronic engineeringlinear systemsSampling (statistics)02 engineering and technologyhybrid systemsAperiodic measurements Hybrid systems Linear systems Round-Robin scenario Sampled-data observerSampled-data observeraperiodic measurements[SPI.AUTO]Engineering Sciences [physics]/Automatic020901 industrial engineering & automationSettore ING-INF/04 - AutomaticaControl and Systems EngineeringControl theoryAperiodic graph0202 electrical engineering electronic engineering information engineeringState observerRound-Robin scenarioElectrical and Electronic EngineeringConstant (mathematics)JitterMathematics
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A time-varying observer for linear systems with asynchronous discrete-time measurements

2017

International audience; In this paper we propose a time-varying observer for a linear continuous-time plant with asynchronous discrete-time measurements. The proposed observer is contextualized in the hybrid systems framework providing an elegant setting for the proposed solution. In particular some theoretical tools are provided, in terms of LMIs, certifying asymptotic stability of a certain compact set where the estimation error is zero. Moreover the case of asynchronous measurements is considered, i.e. when the measurements are not provided in well defined time instants, but they occur at an arbitrary time in a certain time interval. A design procedure based on the numerical solution of …

0301 basic medicine0209 industrial biotechnologyObserver (quantum physics)Computer scienceLinear system02 engineering and technologyInterval (mathematics)Sampled-data observerdiscrete asynchronous measurement[SPI.AUTO]Engineering Sciences [physics]/Automatic03 medical and health sciences030104 developmental biology020901 industrial engineering & automationSettore ING-INF/04 - AutomaticaExponential stabilityDiscrete time and continuous timeAsynchronous communicationControl theoryHybrid systemhybrid systemlinear systemlinear matrix inequalities
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A hybrid observer for localization from noisy inertial data and sporadic position measurements

2023

We propose an asymptotic position and speed observer for inertial navigation in the case where the position measurements are sporadic and affected by noise. We cast the problem in a hybrid dynamics framework where the continuous motion is affected by unknown continuous-time disturbances and the sporadic position measurements are affected by discrete-time noise. We show that the peculiar hybrid cascaded structure describing the estimation error dynamics is globally finite-gain exponentially ISS with gains depending intuitively on our tuning parameters. Experimental results, as well as the comparison with an Extended Kalman Filter (EKF), confirm the effectiveness of the proposed solution with…

Settore ING-INF/04 - AutomaticaControl and Systems EngineeringLocalization sampled-data observer sporadic measurements hybrid cascaded systemsAnalysisComputer Science Applications
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