Che 185 process control and dynamics
Download
1 / 15

- PowerPoint PPT Presentation


  • 123 Views
  • Uploaded on

CHE 185 – PROCESS CONTROL AND DYNAMICS. WORKSHOP 2. P-only control of tank level. OBJECTIVES: 1. Understand the concept of closed loop feedback control (in contrast to open loop). 2. See the effects of controller gain on its performance (Define performance) . P-only control of tank level.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about '' - keiran


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


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

P only control of tank level
P-only control of tank level

  • OBJECTIVES:

    • 1. Understand the concept of closed loop feedback control (in contrast to open loop).

    • 2. See the effects of controller gain on its performance (Define performance)

      .


P only control of tank level1
P-only control of tank level

  • OBJECTIVES:

    • 3. Realize the difference between set point tracking and disturbance rejection controls (show response curves for each)

    • 4. Predict the steady state error of the P-only control, and understand the existence of it for P-only control


P only control of tank level2
P-only control of tank level

  • OBJECTIVES:

    • 5. Understand what proportional band is.

  • overall objective is to maintain inventory; tank-filling operation is to maintain constant level; transmitter, control valve, and controller are the devices to achieve that objective.





Typical results
TYPICAL RESULTS

  • Fit a FOPDT dynamic model to the CO to PV (cause and effect) step test data CO = controller output; PV = measured process variable (level in the tank)


Typical results1
TYPICAL RESULTS

  • Fit a FOPDT dynamic model to the CO to PV


Typical results2
TYPICAL RESULTS

  • 60%  68% step in Controller Output


Typical results3
TYPICAL RESULTS

  • 60%  68% step in Controller Output


Typical results4
TYPICAL RESULTS

  • 60%  68% step in Controller Output


Typical results5
TYPICAL RESULTS

  • ACTIVATING THE CONTROLLER - Click the level controller icon (LC), switch from Manual Mode to PID, enter your SP, CObias and Kc values. Switch integral to ‘off: Integral Mode’. Derivative Mode should also be off.