40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  Cryo Lab eLog  Not logged in ELOG logo
Entry  Fri Apr 3 15:21:38 2020, Ian MacMillan, Computing, Simulation, Moderinger Simulation 
    Reply  Mon Apr 13 17:30:35 2020, rana, Computing, Simulation, Moderinger Simulation 
    Reply  Wed Apr 22 15:03:59 2020, Ian MacMillan, Computing, Simulation, Moderinger Simulation Moderinger.pdfsimplemoderinger.slx
       Reply  Wed Apr 22 16:41:31 2020, rana, HowTo, Simulation, Moderinger Simulation 
          Reply  Thu Apr 23 13:30:51 2020, Ian MacMillan, HowTo, Simulation, Moderinger Simulation simplemoderinger.slx
             Reply  Fri May 1 03:22:05 2020, Ian MacMillan, HowTo, Simulation, Moderinger Simulation ModeringerSimV2Layout.pdfsimplemoderinger.slx
                Reply  Sun May 3 20:51:14 2020, Ian MacMillan, Computing, Simulation, Moderinger Simulation Moderinger_V2.zip
                   Reply  Tue May 5 13:04:23 2020, aaron, Computing, Simulation, Moderinger Simulation 
                      Reply  Tue Sep 29 02:02:54 2020, Ian MacMillan, Computing, Simulation, Moderinger Simulation ModeRingerLoop.pdfStepPlot.pdfPowerSpectrum.pdfModeRingerSim.zip
                         Reply  Tue Sep 29 11:00:53 2020, aaron, Computing, Simulation, Moderinger Simulation 
                            Reply  Thu Oct 8 00:31:11 2020, Ian MacMillan, Computing, Simulation, Moderinger Simulation ModeRingerLoopDig.pdfModeRingerSim.zip
                               Reply  Thu Oct 15 22:15:11 2020, Ian MacMillan, Computing, Simulation, Moderinger Simulation ModeRingerSpec.pdf
                   Reply  Tue May 5 13:05:36 2020, Ian MacMillan, Computing, Simulation, Moderinger Simulation ModeringerNotebook.ipynb
Message ID: 2572     Entry time: Tue Sep 29 11:00:53 2020     In reply to: 2571     Reply to this: 2573
Author: aaron 
Type: Computing 
Category: Simulation 
Subject: Moderinger Simulation 

Beautiful! Want to push this to the repo under git large file storage?

Quote:

The step function represents the excitation of the sample. Ideally, it would excite to the setpoint and stay there but for some reason, it is jumping way past the point before returning. By messing with the gain and the frequency of the low pass filter I could get a variety of results the best is shown below at 50 gain and 40 rad/s.

The overshoot is interesting! To understand the loop shaping, I suggest checking out Gardner's Phaselock Techniques or Astrom and Murray's Feedback SystemsThey both have sections on optimal PID controller design (at least Astrom and Murray do). You can make a pole-zero plot to help choose the location of poles and zeros in your loop shaping filter (the discrete zero-pole TF we added, after the gain).

 

ELOG V3.1.3-