Added: 4 years ago
From: bietz17
Views: 36,011
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  • ahhh, it's good to see the boe bot again

  • Very illustrative

  • =)

  • very good work, (y)

  • If you use fir your P controller a high enough value, you would get some very decent results comparable to the PID, and with less space in the uC memory

  • nice way to show P and PID controllers in action, this video actually shows how I and D terms work. sure with PID a steady state error is eliminated and the gadget acts more precise than with P controller

  • increase the value of Kd

  • Hi. The video is great. Can you tell me, from your experience with tweaking the p, i and d terms, what is the effect of each one?

  • nice, but maybe you should check your derivative response as you still got a bit overshoot and pseudo pulse remaining on this.

    Nice job though !

  • What kind of sensor does it use?

  • This video illustrates how PID works in practise. Great, thx

  • looks like system is under damped

  • oops just seen the comments further down...my bad :D

  • its like the robot is attached with a spring in the second part of the video

  • The propeller chip is amazing! As opposed to the Basic Stamp the propeller chip comes with 8 processors or "cogs." I know Chip Gracy is actually in the works of creating a newer one which will have 16 processors on a single inexpensive DIP!

  • very interesting, the PID control makes a lot of difference.

    i have a test about this tomorrow, and i wanted to see some real aplications :)

  • Cool vid - I like the bots response :)

  • Hi, it seems like it overshoots reference values - distance - in both cases. am I wrong? does it need calibration of PID ?

  • If you don't like that effect, you can of course tune the PID values. The overshooting should be due to a larger Integral gain value. but I love it...

  • no, just asked because I have just learned PID :)

    nice bot ;)

  • in fact.. the overshoot control is with the derivative part... not with the integral.. the integral just improve the steady state error...

    xD

  • Hiya bietz17 : Way cool , I just bought a BoeBot this week, was it difficult to build? Do you have extras on your Boe Bot than came with the kit?

    Thanks :))

  • that's actually not my boe bot. It's just a video from Parallax that shows how the "PEKBot" (with the propeller chip) with a PID controller works better than the normal BOE-bot with P controller.

    You can watch the video called 'BOEbot P and PID control'

    to see my boe bot performing a P and a PID controller.

    The only difficulty that you could find is rather the programming part than the building part. Read the manual carefully.

  • Be aware that robotics is mostly about programming!

    If you don't know anything about it yet, have fun discovering the programming world!

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