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dc.contributor.authorUlu, E.en_US
dc.contributor.authorUlu, N.G.en_US
dc.contributor.authorCakmakci, M.en_US
dc.date.accessioned2016-02-08T12:11:37Z
dc.date.available2016-02-08T12:11:37Z
dc.date.issued2012en_US
dc.identifier.urihttp://hdl.handle.net/11693/28117
dc.description.abstractThis paper presents a new method to increase the available measurement resolution of quadrature encoder signals. The proposed method features an adaptive signal correction phase and an interpolation phase. Typical imperfections in the encoder signals including amplitude difference, mean offsets and quadrature phase shift errors are corrected using recursive least squares with exponential forgetting and resetting. Interpolation of the corrected signals are accomplished by a quick access look-up table formed offline to satisfy a linear mapping from available sinusoidal signals to higher order sinusoids. The position information can be derived from the conversion of the high-order sinusoids to binary pulses. With the presented method, 10nm resolution is achieved with an encoder having 1μm of original resolution. Further increase in resolution can also be satisfied with minimizing electrical noises. Experiment results demonstrating the effectiveness of the proposed method for a single axis and two axis slider systems are given. Copyright © 2012 by ASME.en_US
dc.language.isoEnglishen_US
dc.source.titleASME 2012 5th Annual Dynamic Systems and Control Conference Joint with the JSME 2012 11th Motion and Vibration Conference, DSCC 2012-MOVIC 2012en_US
dc.relation.isversionofhttp://dx.doi.org/10.1115/DSCC2012-MOVIC2012-8661en_US
dc.subjectAdaptive correctionsen_US
dc.subjectAmplitude differenceen_US
dc.subjectExponential forgettingen_US
dc.subjectMeasurement resolutionen_US
dc.subjectPosition informationen_US
dc.subjectQuadrature encoder signalsen_US
dc.subjectQuadrature phase shiftsen_US
dc.subjectRecursive least square (RLS)en_US
dc.subjectInternal combustion enginesen_US
dc.subjectModel predictive controlen_US
dc.subjectPredictive control systemsen_US
dc.subjectTable lookupen_US
dc.subjectInterpolationen_US
dc.titleAdaptive correction and look-up table based interpolation of quadrature encoder signalsen_US
dc.typeConference Paperen_US
dc.departmentDepartment of Mechanical Engineering
dc.citation.spage543en_US
dc.citation.epage552en_US
dc.citation.volumeNumber2en_US
dc.identifier.doi10.1115/DSCC2012-MOVIC2012-8661en_US


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