Designing a Lag Compensator with Bode Plot

This video is part of the "Lead/Lag Compensators" playlist on my channel.

Errata:

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[oldcowbb]

It is weirdly satisfying when we finally see the step response after all the abstract frequency domain design

[usmanzubair]

Hi Brain, here m in Italy doing my MS engineering in Industrial engineering... I encountered Automatic Control and Instrumentation with zero back ground but your effort really astonishing and appreciating make me to understand and clear subject with cent by cent... I just want to say a lot to U... Stay happy and keep your work up.... again

[BrianBDouglas]

Thanks for the feedback ... I always appreciate it! I completely agree with you. Sometimes I watch my video just before I post it and I bore myself :) I would love to be able to do more demonstrations but they take a bit longer to set up and run than just writing out the theory. Plus I always feel I need to give background info before running the demonstration. But that is the goal of my laboratory videos I put out every other week. I'll try to add more practical demos in the videos. Thanks.

[eamonhannon]

Brilliant series of videos . If there was an academia award for Control Engineering you should get one !

[alirezaghaderi]

Your videos never gets old 😂😂 I ve been watching since I was I Ungraduated student till now ...everytime I watch, I learn sth new

[alexbryden]

You Sir, have a gift for explanation and organizing a lecture. Thank you very much!

[arsalansyed]

You are a blessing to this universe. Thank you Brian.

[Andrew_Lee_Taipei]

I finally understand intuitively how lead and lag design are used in practice.

[Pyrohawk]

Brian, your videos are astonishingly good. Not much else needs to be said.

[stevenjensjorgensen]

I just finished the series and came out with a better understanding of the topic. Thanks once again for uploading these incredible videos up!

[debanjandas]

Great work I dont have words to say that how these videos helped me.. please add videos on how to make block diagrams & signal flow graphs from electrical circuits

[MrDerpHerp]

Hey Brian, I am currently finishing a summer course on Classical Control Theory and your vids have helped me understand it so much! Just wanted to say thank you

[Spottedlove]

Brian love the lectures keep up the great work!

[divyaprakashbiswas]

Sir, you are a magician. Thanks a lot for such great content !!

[Xiuaua]

Really nice, you know how to explain it really well, the pictures really help it.

I think that this videos are the best as they are, it would be nice to have some excersises thought ( but one video dedicated for it ), this was a really nice abstract of lead and lag compensation.

[amiteytan]

thank you so much for all the great lectures, i have watched so many of them.
i really wish you will make a lecture about desiging a control system that includs both lead and lag compensator togther with bode plot, i find the cases when you have to consider PM and GM for the same system hard and that to use both lead and lag compensator togther can make it much easier.

[kaiov]

Amazing!! Well done Brian. Keep it up!!

[innokentiyromanchenko]

i ve enjoyed this mini series of criteria(...)..)

[BrianBDouglas]

The compensators I described are continuous (S-domain) which means you need an analog circuit to implement them exactly. But like you said we usually implement these in the digital domain (Z-domain) using software. So the first thing you need to do is convert the compensator from S to Z using some method like Tustin where s = (2/T)*(1-z^-1)/(1+z^-1) or simple method where s = (1-z^-1)/T.

In this equation T is the sample time of your digital system and z^-1 is the previous sample in time.

[ratandeepgupta]

superb bro i liked the explanation. great work