Sensorsareacriticalcomponentinamotorcontrol
system.Theyareusedtosensethecurrent,position,
speedanddirectionoftherotatingmotor.Recent
advancementsinsensortechnologyhaveimproved
theaccuracyandreliabilityofsensors,whilereducing
thecost.Manysensorsarenowavailablethatintegrate
thesensorandsignal-conditioningcircuitryintoasingle
package.
Inmostmotorcontrolsystems,severalsensorsare
usedtoprovidefeedbackinformationonthemotor.
Thesesensorsareusedinthecontrolloopandto
improvethereliabilitybydetectingfaultconditionsthat
maydamagethemotor.Asanexample,Figure1pro-
videsablockdiagramofaDCmotorcontrolsystemto
showthesensorfeedbackprovidedforatypicalmotor
control.MAN894MotorControlSensorFeedbackCircuitsAlistofthesensorsthatcanbeusedtofeedbackAuthor:JimLepkowskiinformationtoamicrocontrollerarelistedbelow:MicrochipTechnologyInc.Currentsensors-ShuntresistorINTRODUCTION-Current-sensingtransformerSensorsareacriticalcomponentinamotorcontrol
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