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RESEARCH PRODUCT
Time-varying Sampled-data Observer with Asynchronous Measurements
Luca ZaccarianAntonino SferlazzaSophie Tarbouriechsubject
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 asynchronousdescription
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 find a solution to an infinite-dimensional LMI whenever a feasible solution exists. Finally a numerical example shows the effectiveness of the proposed approach.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-02-01 |