Lecture 12 Feedback control systems: static analysis

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S. BoydEE102Lecture12Feedbackcontrolsystems :staticanalysis feedbackcontrol:general example open-loop equivalentsystem plantchanges,disturbancerejection, sensor noise12{1Feedbackcontrolsystemsfeedbacki s widelyusedinautomaticcontrolterminology: the systemto be controlledis calledtheplant asensormeasuresthe quantity to be controlled anactuatora ectsthe plant thecontrollerorcontrolprocessorprocesses the sensor signalto drivethe actuator thecontrollaworcontrolalgorithmis the algorithmusedby the controlprocessor to derivethe actuator signalFeedbackcontrolsystems:staticanaly sis12{2Block diagram(oftenthe sensors and actuators are not shown separately)PSfragreplacementsPlantContro llerdisturbancesensor signalactuator signalcommandsignalactuatorsensorFeedbac kcontrolsystems:staticanalysis12{3Exampl esplants:CD player, disk drivemechanics;aircraftor missile;car suspension,engine;rollingmill;high-riseb uilding,XY stageon stepper machinefor IC lithography;computernetwork; industrialprocess;elevatorsensors:radar altimeter;GPS;shaftencoder; LVDT;straingauge;accelerometer;tachomete r;microphone;pres}}}

Lecture 12 Feedback control systems: ... sensors: radar altimeter; ... Feedback control systems: static analysis 12{4. Example

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