feedback2 - Slide 1 ME 475 Session 2: Principle of Feedback...

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Unformatted text preview: Slide 1 ME 475 Session 2: Principle of Feedback Control Galen King Purdue University Disk Drive Head Positioning Objective : to precisely locate the head over the disk Options : 1) Open-loop control (without feedback) 2) Closed-loop control (with feedback) Slide 2 ME 475 Session 2: Principle of Feedback Control Galen King Purdue University Open-Loop Control $ ( %FTJSFE 5SBDL 1PTJUJPO "DUVBM )FBE 1PTJUJPO .PUPS 7PMUBHF $POUSPMMFS .PUPS Slide 3 ME 475 Session 2: Principle of Feedback Control Galen King Purdue University Open-Loop Control (with Disturbance) $ ( %FTJSFE 5SBDL 1PTJUJPO "DUVBM )FBE 1PTJUJPO .PUPS 7PMUBHF $POUSPMMFS .PUPS 7PMUBHF %JTUVSCBODF + + Slide 4 ME 475 Session 2: Principle of Feedback Control Galen King Purdue University Introduce Feedback $POUSPMMFS 1MBOU 3T :T + $ ( /T %T + + + + R(s): reference input signal for desired action D(s): disturbance signal acting on plant N(s): noise signal corrupting the measurement Slide 5 ME 475 Session 2: Principle of Feedback Control...
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feedback2 - Slide 1 ME 475 Session 2: Principle of Feedback...

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