1 / 14

Digital Control Systems

Digital Control Systems. Joel Klooster ENGR 315 Dec 5, 2001. Continuous vs. Discrete Time. Improved sensitivity Use digital components Control algorithms easily modified Many systems inherently digital. Develop complex math algorithms Lose information during conversions.

cid
Télécharger la présentation

Digital Control Systems

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Digital Control Systems Joel Klooster ENGR 315 Dec 5, 2001

  2. Continuous vs. Discrete Time

  3. Improved sensitivity Use digital components Control algorithms easily modified Many systems inherently digital Develop complex math algorithms Lose information during conversions Advantages Disadvantages

  4. Digital Control Systems:Zero-Order Hold

  5. Digital Control Systems:Zero-Order Hold (cont)

  6. Digital Control Systems:The z-transform Def’n of z-Transform: Relationship b/w s-plane and z-plane:

  7. Digital Control Systems:The z-transform (cont) Several common z-Transforms

  8. Digital Control Systems:Stability in s-plane Region of Stability: Left-Hand Plane

  9. Digital Control Systems:Stability in z-plane Region of Stability: Unit-Circle

  10. Digital Control Systems:Root-Locus

  11. Digital Control Systems:Root-Locus (cont)

  12. Digital Control Systems:MATLAB to the rescue • c2d • conversion of continuous-time models to discrete time • zgrid • generate z-plane grid lines for a root locus or pole-zero map over an existing map • dstep • Step response of discrete time system • stairs • Connects the elements from dstep to form stairstep graph

  13. Digital Control Systems:Design Example Root Locus Design for Digital DC Motor Position Control

  14. Digital Control Systems:Design Example

More Related