NASA LogoNTRSNTRS - NASA Technical Reports ServerSearchmore_vertCollectionsAboutNewsHelpLogin Back to ResultsSpeed Sensorless Induction Motor Drives for Electrical Actuators: Schemes, Trends and TradeoffsFor a decade, induction motor drive-based electrical actuators have been under investigation as potential replacement for the conventional hydraulic and pneumatic actuators in aircraft. Advantages of electric actuator include lower weight and size, reduced maintenance and operating costs, improved safety due to the elimination of hazardous fluids and high pressure hydraulic and pneumatic actuators, and increased efficiency. Recently, the emphasis of research on induction motor drives has been on sensorless vector control which eliminates flux and speed sensors mounted on the motor. Also, the development of effective speed and flux estimators has allowed good rotor flux-oriented (RFO) performance at all speeds except those close to zero. Sensorless control has improved the motor performance, compared to the Volts/Hertz (or constant flux) controls. This report evaluates documented schemes for speed sensorless drives, and discusses the trends and tradeoffs involved in selecting a particular scheme. These schemes combine the attributes of the direct and indirect field-oriented control (FOC) or use model adaptive reference systems (MRAS) with a speed-dependent current model for flux estimation which tracks the voltage model-based flux estimator. Many factors are important in comparing the effectiveness of a speed sensorless scheme. Among them are the wide speed range capability, motor parameter insensitivity and noise reduction. Although a number of schemes have been proposed for solving the speed estimation, zero-speed FOC with robustness against parameter variations still remains an area of research for speed sensorless control.Document ID19970026120Acquisition SourceLegacy CDMSDocument TypeConference PaperAuthorsElbuluk, Malik E.*(Akron Univ. Akron, OH United States)*Kankam, M. David*(NASA Lewis Research Center Cleveland, OH United States)*Date AcquiredSeptember 6, 2013Publication DateMay 1, 1997Subject CategoryAircraft Stability And ControlReport/Patent NumberE-10752NASA-TM-107466NAS 1.15:107466Meeting InformationMeeting: National Aerospace and ElectronicsLocation: Dayton, OHCountry: United StatesStart Date: July 14, 1997End Date: July 18, 1997Sponsors:Institute of Electrical and Electronics Engineers,Department of the Air ForceAccession Number97N25468Funding Number(s)PROJECT: RTOP 233-1A-1CDistribution LimitsPublicCopyrightWork of the US Gov. Public Use Permitted.Available DownloadsNameType19970026120.pdfSTIcloud_downloadcontent_copyvisibilityRelated RecordsThere are no records associated with this record.visibility_offNo Preview Available
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