Tim, you remind me of my professor in college. if we got him a report with 100 pages and one of the references was Wikipedia, he will toss the whole thing in the trash and zero us 🤣🤣🤣. Totally agree with you. In technical fields, the best reference is the manufacture of the product and especially Rockwell almost never goes wrong with their material.
Hi Tim, First, I'd like to thank you for all your videos-they have helped me countless times! You do great work! I'm currently working on a project for an extrusion control package and have been struggling with the PIDE setups, which I'm sure you hear a lot. The issue I'm facing is extremely long lag times, sometimes up to 15 minutes. I've tried auto-tuning multiple times, but it keeps timing out. Despite these challenges, I have managed to get everything working reasonably well, but it's far from perfect. The main problem is the PIDE locking up at 100% output if the die zone doesn't reach the set point for a couple of hours. I've looked into anti-windup strategies, but I can't figure out how to implement them correctly-if that's even the right approach to fix this issue. Any advice or guidance you can offer would be greatly appreciated. Best regards, Derek
Thank you for this video… I used PID with only P, no I, no D in a function block diagram and it doesn’t work as expected… then I see how CV is calculated… oh! It slowly creeps up if the PV is under the SP… but how do I know that the CV will stop when the process has reached the desired temperature? 🤦🏾
Hi, thanks for the video. So the Wikipedia article is correct, it's just "different" thant RA's implementation, correct? (BTW, I do work for RA, but that doesn't necessarily make me a PID/PIDE expert :) ).
@@TimWilborne So the issue is that they have just picked a specific one (a textbook PID), without mentioning that there are many different variations, right? Or are you also saying that the one they explained isn't correct to begin with? Thanks.
Sir why did you skip the D of the PID, as a controls engineer I really wanted to see the enhanced response time from PIDE in real time with the use of the Kd gains. Request to kindly upload putting up a disclaimer that some controls engineering background is required.
No engineering background will be required for the derivative. I just didn't like a few things about the video and haven't got around to reshooting it.
More videos on PID.
Make a series on PID .
Thank you for this video
Here you go! twcontrols.com/pid-control-proportional-integral-derivative
Tim, you remind me of my professor in college. if we got him a report with 100 pages and one of the references was Wikipedia, he will toss the whole thing in the trash and zero us 🤣🤣🤣.
Totally agree with you. In technical fields, the best reference is the manufacture of the product and especially Rockwell almost never goes wrong with their material.
Yes, that reference guide was well written by Rockwell.
Hi Tim,
First, I'd like to thank you for all your videos-they have helped me countless times! You do great work!
I'm currently working on a project for an extrusion control package and have been struggling with the PIDE setups, which I'm sure you hear a lot. The issue I'm facing is extremely long lag times, sometimes up to 15 minutes. I've tried auto-tuning multiple times, but it keeps timing out.
Despite these challenges, I have managed to get everything working reasonably well, but it's far from perfect. The main problem is the PIDE locking up at 100% output if the die zone doesn't reach the set point for a couple of hours. I've looked into anti-windup strategies, but I can't figure out how to implement them correctly-if that's even the right approach to fix this issue.
Any advice or guidance you can offer would be greatly appreciated.
Best regards,
Derek
Hi Derek. What do you have your limits set to?
@@TimWilborne 😃 If your referring to the cv limits their set 0-100%.
Same problems. How did you resolve ???
Thank you for this video… I used PID with only P, no I, no D in a function block diagram and it doesn’t work as expected… then I see how CV is calculated… oh! It slowly creeps up if the PV is under the SP… but how do I know that the CV will stop when the process has reached the desired temperature? 🤦🏾
With proportional only, it won't necessarily
Hi, thanks for the video. So the Wikipedia article is correct, it's just "different" thant RA's implementation, correct? (BTW, I do work for RA, but that doesn't necessarily make me a PID/PIDE expert :) ).
Incorrect. There are numerus different PID equations. It this level, you can't be looking to Wikipedia as a reliable source of information.
@@TimWilborne So the issue is that they have just picked a specific one (a textbook PID), without mentioning that there are many different variations, right? Or are you also saying that the one they explained isn't correct to begin with? Thanks.
Sir why did you skip the D of the PID, as a controls engineer I really wanted to see the enhanced response time from PIDE in real time with the use of the Kd gains. Request to kindly upload putting up a disclaimer that some controls engineering background is required.
No engineering background will be required for the derivative. I just didn't like a few things about the video and haven't got around to reshooting it.
@@TimWilborne Would definitely look forward to it. Thanks for uploading so much information in so much depth for free.
I too am looking forward to the next video in this series! Thanks for your videos and keep up the great work.
Ditto, Eagerly waiting for the "D" video
Tim, can you do a video of tuning the velocity form of the equation manually, not using autotune? that would be terrific.
Probably not, I do have a derivative video if I ever finish it.
Here's a link to the RA paper.
literature.rockwellautomation.com/idc/groups/literature/documents/wp/logix-wp008_-en-p.pdf
Yep, it is in the description also with some other helpful links 😁