CM3310
Project 2.

Due:  February 26, 2001

  1. PID Controller Tuning
    1. Using the process "SYSTEM A" simulated through the link, http://www.chem.mtu.edu/~tbco/cm416/newpida.html, apply the three tuning methods namely a) Ziegler-Nichols Method, b) Autotune Relay Method and c) Cohen-Coon Method. ( Submit the plots used for the determination of the controller parameters, as well the final controlled process, for each method. )
    2. Using the process "SYSTEM B" simulated through the link, http://www.chem.mtu.edu/~tbco/cm416/newpidb.html, apply the tuning methods of Ziegler-Nichols and the Autotune Relay Method. ( Submit the plots used for the determination of the controller parameters, as well the final controlled process, for each method. )
  1. Process Modeling
Using the process from SYSTEM B ( http://www.chem.mtu.edu/~tbco/cm416/newpidb.html ),
    1. Data Gathering:
      1. Under manual mode, set the input to 0.0 and wait for steady state.
      2. Invoke a step change in the input to 1.0
      3. After around 50 time units elapse, invoke an opposite step change in the input to 0.0
      4. After approximately 45 time units elapse, click on the PAUSE button. (You will need a flat portion on the front of your output plot as shown below.)

      5.  

         


         
         

      6. Click the DATA button and the data window should appear.
      7. Inside the data window, right click on your mouse to the SELECT ALL option.
        (If you are using  Internet Explorer, you need to select the block of data by click-dragging the mouse. Then use 
        CTRL-C to copy and CTRL-V to paste data into Excel)
      8. Right click on your mouse to COPY to the clipboard.
      9. Open an Excel spreadsheet and PASTE the contents from the clipboard.
    1. Use the Excel spreadsheet (with SOLVER) to estimate a second order model that would closely fit the data obtained from the previous step. (For a quick tutorial, go to http://www.chem.mtu.edu/~tbco/cm416/modest.html). (Submit at least the top part of your spreadsheet which shows the setup and first few entries of the various columns.)

    2.  
    3. Write down the model which the SOLVER obtained. Also, show the plots of the data together with the predicted/estimated values.