Download
feedback n.
Skip this Video
Loading SlideShow in 5 Seconds..
Feedback PowerPoint Presentation

Feedback

92 Views Download Presentation
Download Presentation

Feedback

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Feedback

  2. Feedback loop (CV changes input) + - E Controller Gc PlantGp SP MV (Manipulated Variable S SensorGs CV Controlled Variable

  3. The input of each block determines the output • CV = Gp(s)*MV PlantGp MV (Manipulated Variable CV Controlled Variable

  4. MV = Gc E E Controller Gc MV (Manipulated Variable

  5. Combine blocks • CV = Gp*Gc*E E Controller Gc PlantGp MV (Manipulated Variable CV Controlled Variable

  6. E = SP – S • S = Gs*CV or E = SP – Gs*CV + - E SP S SensorGs CV Controlled Variable

  7. Do the math to get the “closed loop” transfer function • CV = Gp*Gc*E • E = SP – Gs*CV • CV = Gp*Gc*(SP – Gs*CV) • Solve for CV