Nyquist Stability Criterion, Part 1

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  • Опубліковано 25 гру 2024

КОМЕНТАРІ • 575

  • @michaelsutanto6757
    @michaelsutanto6757 4 роки тому +549

    7 years after you uploaded this video, in the middle of a pandemic, you saved a uni student from failing his module. Thanks.

  • @anantikamehra1694
    @anantikamehra1694 9 років тому +517

    You not only make me understand, but also make me marvel at the beauty of the stuff you're teaching. You are a brilliant teacher! Thank you so much for taking the time out to make these videos and helping us struggling undergraduates with something that can be so simple, but is generally taught in a way that makes the material inaccessible and scary.

    • @CallmeKaram
      @CallmeKaram 7 років тому +4

      Anantika Mehra 😂 😂 😂 I have become Fan of your English 😛

    • @rushilvispute7017
      @rushilvispute7017 7 років тому

      True!

    • @howardlam6181
      @howardlam6181 4 роки тому +3

      The reason this is so good is because of the example program he made rather than theorems that are very hard to read because they skip all the derivation steps and just say they are trivial and we should do at our own time.

  • @BrianBDouglas
    @BrianBDouglas  11 років тому +111

    Part two is in my head! I'm working on it now and should have it out within the week. Thanks for watching!

    • @enesog
      @enesog 3 роки тому

      What if the RHS zeros of (1+G*H) are compensated by the zeros of G ?
      Than you will not have Poles in the RHS of the closed loop system CLTF = G / (1+G*H)
      Is this case even possible?

    • @coolwinder
      @coolwinder 2 роки тому +3

      We need a continuation, this is the most amazing video I saw on this topic! Pls continue working and bringing this kind of insight!

    • @SaeedAcronia
      @SaeedAcronia 2 роки тому +1

      Hi Brian, would you let me know what reference books you recommend?

  • @hidansektas
    @hidansektas 6 років тому +32

    I LITERALLY CRIED WHEN I UNDERSTOOD IT. ENGLISH ISNT EVEN MY FIRST LANGUAGE SO I HAD TO CONCENTRATE EXTRA HARD . THANK YOU SO FREAKING MUCH

    • @diamond-Kaz
      @diamond-Kaz 3 роки тому +1

      Feeling the exact same way lol, i was starting to get super-anxious about my upcoming exam ;;

    • @hidansektas
      @hidansektas 3 роки тому +3

      @@diamond-Kaz you got this. i actually graduated since writing the comment. i wish you all the luck in the world i believe in you❤

    • @diamond-Kaz
      @diamond-Kaz 3 роки тому +1

      @@hidansektas 💖💝❤️

  • @tarunfirestoned
    @tarunfirestoned 11 років тому +21

    you are a lifesaver dude.you made me understand something easily in minutes which i could not understand for hours together

  • @assil619
    @assil619 3 роки тому +2

    Sir, you are a Control Systems Theory god. Bless thee for allowing us lowly beings ascend the ladder of knowledge.

  • @blakerezachek9804
    @blakerezachek9804 4 роки тому +34

    Just watched 5 hours of university lectures that didn't even come close to explaining the topic with this level of clarity

  • @itaidagan1
    @itaidagan1 9 років тому +5

    Blown away by how clear and concise this video is, thank you!

  • @CyberSherriff
    @CyberSherriff 11 років тому +2

    You're an absolute legend, I failed my summer exam in control and I have my repeats in 4 weeks. Your vids are saving me, and I think I'm finally getting the concept of CONTROL. I wish you the best in life, sincerely.

  • @BoutinMathieu
    @BoutinMathieu 10 років тому +37

    I really like the way you teach. The sound and image are both very clear, and you seem motived when you speak. Please keep making more videos!

  • @AhmedMagdy-xb8bl
    @AhmedMagdy-xb8bl 8 місяців тому

    You helped me grasp control theory like never before. I now think like a control system engineer.
    Brian, your dedication to teaching is truly appreciated. Just as scientists advance knowledge, educators like you ensure its transmission.
    Thank you for your invaluable contribution.

  • @Banarasi_guy
    @Banarasi_guy 9 років тому +18

    From basic to the top
    always the best lecture series :D

  • @nyoomba
    @nyoomba 4 роки тому +1

    This guy blows my lecturer out of the water, kudos man!

  • @yushaos
    @yushaos 11 років тому +35

    Why are you so good at explaining?!

  • @inigo_88
    @inigo_88 11 років тому +3

    This series is fantastic. I wish more people who taught Controls could communicate the concepts as effectively as you do in your videos. Keep up the great work!

  • @goodboi42
    @goodboi42 2 роки тому +1

    I not only passed my semester but also grew an appreciation for Control Systems because of your lectures.
    Thank you so much!

  • @andyhong6951
    @andyhong6951 10 років тому +47

    My god, I owe you my life man LOL
    This video saved my day

  • @amysmith6068
    @amysmith6068 5 років тому +4

    You are an amazing teacher! Thank you so much for making this amazing resource publicly available. You are responsible for many engineering students developing a real understanding of important stuff

  • @starimakro4292
    @starimakro4292 Рік тому +1

    Nyquist is one of the coolest names i have ever heard of

  • @chriskorfmann
    @chriskorfmann 3 роки тому +2

    I'll be another drop in the bucket when I say this, but I have to say it. This video is phenomenal. All of your videos that I've watched so far are amazing. I think you're the reason I will pass my control systems course. Thank you for your work.

  • @parthpatel-dg3db
    @parthpatel-dg3db 4 роки тому

    The best explanation of the Nyquist plot. I gave up this topic but thanks to you now I can imagine what is the Nyquist plot and why it even exists. thanks, man.

  • @abhijitmajee6754
    @abhijitmajee6754 5 років тому +1

    You must understand that you have a unique gift of God that you can explain things so purely. I feel enlightened by the level of insight you present. Thank you, Sir.

  • @SoulSurivor
    @SoulSurivor 3 роки тому

    Amazing! The reader for my system control class dedicated a whole 400-orso words to Nyquist diagrams... So I am glad to have found someone explaining it to this degree of clearness!

  • @nikosips
    @nikosips 4 роки тому +2

    This is the best series of starting to learn control theory on youtube ! Thank you very much for your time and effort!

  • @elisamicaelarodriguezstein2975
    @elisamicaelarodriguezstein2975 3 роки тому

    OMFG, I really, really enjoy the way you explain. I know there are too many people who are not from an English speaking country and watch your videos, just like me! Regards from Argentina

  • @merlissoto3923
    @merlissoto3923 7 років тому

    Brian, you have the ability to make all control system theory interesting!

  • @Amplid00
    @Amplid00 11 років тому +1

    Hey man, just wanted to say your online classes are worth 10 of my brain-shrivelling books, I wish I had a teacher like you for every class!!
    Keep it up, you make all of our lives so much easier!

  • @coltonjohnson3140
    @coltonjohnson3140 3 роки тому

    Geesh.... You are such a good teacher, that made understanding Nyquist stuff so much easier

  • @anandh1967
    @anandh1967 21 годину тому

    I spent days on nptel and I finally found this lecture, thank you..

  • @vgmduarte
    @vgmduarte 4 роки тому

    7 years later and still an awesome video. Thanks man.

  • @damianomartucci9814
    @damianomartucci9814 3 роки тому

    Congratulations! Now Nyquist theorem is comprehensible.

  • @hasansukkar2306
    @hasansukkar2306 7 років тому

    Absolute legend, you deserve an honorary PhD for these beautiful videos!

  • @theliferulz
    @theliferulz 5 років тому

    You are a Hero. If they could just fire the lecturer and put your videos in a playlist instead the pass rate would skyrocket.

  • @nicolasavellan3067
    @nicolasavellan3067 3 роки тому

    I've been wondering about this for a solid 6 months and it's so much clearer now. Thanks !!!

  • @BrianBDouglas
    @BrianBDouglas  11 років тому +2

    I have placed the two scripts I wrote in Google docs and placed the link in the description.
    I have not modified the existing Nyquist function in Matlab ... it was just a bit of movie magic! After the plots came up I modified them a little by making the lines thicker and such so it's easier for you guys to see. I just edited that part out.

  • @yasirpunathil7143
    @yasirpunathil7143 4 роки тому

    Thanks alot, Nyquist criterion was a topic I hated because of lack of understanding, I tried many resources including some reference books, but I didn't understand it. Now because of your beautiful explanation, not only that I understood it really well, I could appreciate the beauty of the concept, thanks again

  • @모든일상-j4i
    @모든일상-j4i 6 місяців тому

    You are a living legend.. thanks for such an amazing video!! Seriously helped a lot. - Undergraduate student from South Korea -

  • @chillingmeko
    @chillingmeko 7 років тому

    I may have failed the first time taking Control Systems class, but this second time with your videos I'm passing. :) Thank you, Brian. You da man!

  • @pjggregory
    @pjggregory 11 років тому

    Wow! Amazing. I am speaking for everyone when I say could you upload the 2nd part because we all love you and need these videos in our lives. You should be paid for what you do!

  • @Roxzefox
    @Roxzefox 11 років тому +1

    I'd like to take the time to sincerely thank you for preventing me from failing my control systems course this term.

  • @JudahCaruso
    @JudahCaruso 4 роки тому

    I clicked here by accident but stayed because it sounded so interesting. Literally had 0 knowledge of the topic at hand, but you were such a good teacher that I feel like I learned something anyway haha

  • @keylak8078
    @keylak8078 7 років тому +3

    these videos are literally saving me this semester. thank you!!

  • @lorenzo180596
    @lorenzo180596 5 років тому +1

    Today I just skipped my lesson in Modern Design of Control System, because i didn't understand the previous ones about Nyquist, so it wouldn't have been useful going to lesson today.
    Thanks to you, maybe I can go to the next lesson!
    Love u man

  • @sharshabillian
    @sharshabillian 2 роки тому

    This really ties everything together into one clearer picture. Much appreciated!!

  • @7742-f7n
    @7742-f7n 6 років тому +5

    U save my final exam, I love u.

  • @ashchan1998
    @ashchan1998 5 років тому

    Before learning the maths behind a topic, its very helpful for a teacher like you to explain the reasoning and overall picture of whats going on. I feel my knowledge is incomplete without watching your videoes. Thanks for the great work!

  • @abi1231000
    @abi1231000 4 роки тому +2

    i learned more from this 15 minute video than a 2 hour lecture I just had

  • @shivranjinighegde1113
    @shivranjinighegde1113 7 років тому

    Sir, OMG. You made my life easier!. I was awestruck when you showed the nyquist plots in matla. It makes so much sens e now. Thanks a ton!

  • @samar1977gh
    @samar1977gh 3 роки тому

    Watching your videos just two nights before my finals. Many thanks!! it's great to hear such a great explanation to this subject

  • @MadMax300173
    @MadMax300173 9 років тому

    Awesome explanation of the so smokey Cauchy Argument principle that most text books fail to explain, making it impossible to grasp the real thing! Even 20 years ago when i studied this at the university they gave us quite a smokey explanation compared to this one. Great job! Thumbs up!

  • @vidushavithanage7449
    @vidushavithanage7449 6 років тому

    You are a genius man!!! I was never going to understand about the control module without you! Thankyou..

  • @marcus4536
    @marcus4536 2 роки тому

    I read Ogata and Nise sometimes about Nyquist but this video helped me more. Thanks a lot and keep with the excellent work.

  • @wandersonpereira9884
    @wandersonpereira9884 10 років тому +5

    Brian, you are the best one. Please, make a video about state space control. The world needs it!!!! Thaaks.

    • @tld5843
      @tld5843 4 роки тому

      Yes please!!!!!

  • @suhaskulkarni4514
    @suhaskulkarni4514 10 років тому

    Absolutely amazing videos. I have understood far more through this 17 min video that i have in an entire semester that spans 5 months. Thank you very much.

  • @arihantjain8347
    @arihantjain8347 7 років тому

    watching only 2 or 3 videos had made me a great fan of yours
    doing a great job,ecstatic to find you on youtube.

  • @achm3dz
    @achm3dz 9 років тому

    wah....was having so much trouble with Nyquist and this one video (well ofcourse with some previous knowledge of the Nyquist plot) clears most of the things! great work Brain!

  • @sshanto17
    @sshanto17 2 роки тому

    I learn more from youtube than I did from undergrad and grad school :| Thanks @Brian for making this series.

  • @samrustan
    @samrustan 11 років тому +2

    Thanks for making these videos, Brian. I'm laid-up right now with a broken ankle, so I'm diverting some of my couch and raised-foot time to these lessons. You're really good at driving home the concepts.
    Just an idea: As a recent EE graduate, I'd like to see a video where you design a simple controls system or model or whatever, but without regard to a generic student. Just a straight-forward, "thinking outloud" version of you working through a problem. Just an idea.

  • @jagdishkango9753
    @jagdishkango9753 9 років тому +5

    Was way interesting then my lecture You saved the day.

  • @danawen555
    @danawen555 4 роки тому

    thanks for the explanation
    , you are one of the best youtubers on this area!

  • @patrickwang9137
    @patrickwang9137 6 років тому

    I have an exam in 2 hours and I am watching this now. Thank you so much for making me understand what I am even learning.

  • @naofumi6685
    @naofumi6685 5 років тому

    You are best teacher, So I am the best student....actually We all are......& it's hard to find someone like you....Thanks for everything

  • @rezajaz6105
    @rezajaz6105 7 років тому

    The best teacher i have ever seen

  • @tusharrohilla7154
    @tusharrohilla7154 6 років тому

    Best lectures on control system in whole you tube

  • @nikolatodd1755
    @nikolatodd1755 4 роки тому

    Man, this man is better at explaining than my uni professor.
    Thank you very much!

  • @AleArg09
    @AleArg09 6 років тому

    I have a final exam of Control Systems next monday and this helped me a lot to better understanding Nyquist Criterion. Thanks a lot! I subscribed btw

  • @girin9388
    @girin9388 7 років тому

    Control Systems has become my favourite subject because of you. Thank you! :)

  • @flaviusone
    @flaviusone 11 років тому +1

    I am also waiting for the second part very anxiously.Exams are coming soon and this is just what i need.

  • @abdurrahimemin1371
    @abdurrahimemin1371 4 роки тому

    Ms. Braian you are such a brilliant engineer

  • @StefernOKioni
    @StefernOKioni 10 років тому +1

    Thank you! These tutorials have really helped me in learning control engineering!

  • @조지수-g7c
    @조지수-g7c 8 років тому

    Brian! YOU are sick man... so good, most clearly explained video ever watched on youtube!

  • @BrianBDouglas
    @BrianBDouglas  11 років тому +1

    I know I know! I have the script done and will try to draw it and post it tomorrow. The end of summer has been busy and I've been slacking on these videos :( Best of luck with your exam, I'm glad my videos are helping.

  • @CarlosRR02
    @CarlosRR02 9 років тому

    Control Systems is so much understandable thanks to your videos, I greatly appreciate it!

  • @rodrigosuarez4804
    @rodrigosuarez4804 6 років тому

    So clear dude. You are the Man Brian. Infinite thanks to you Sir!

  • @levuthi
    @levuthi 3 роки тому

    Brian, you are a funny guy, especially when you expressed your amazement graphing 2 Nyquist plots

  • @malharjajoo7393
    @malharjajoo7393 8 років тому

    Fantastic demonstration , the Matlab simulation really helped !

  • @SiddharthDoshi-e4u
    @SiddharthDoshi-e4u 8 місяців тому

    This content is unbelievably good!

  • @mmpmaldo
    @mmpmaldo Рік тому +1

    I came to your channel like a year ago to study bode plots and it was so good I subscribed, today i was seraching for nyquist plots and not only you were once again flawless in your explanation but I also found the control theory map that my teacher used to present the module. You are influencing both students and teachers around the globe, thank you very much and greetings from barcelona!

  • @rmilasi
    @rmilasi 14 днів тому +1

    Thank you for the great presentation. Does anyone know what software is used to make the presentation? I am assuming it can be done with iPad.

  • @Speechrezz
    @Speechrezz 3 роки тому +1

    This video saved me and the midterm I have to take tomorrow :)

  • @BrianBDouglas
    @BrianBDouglas  11 років тому +1

    I added the Mathworks link to arrow.m in the description. I'm working on part two now and should have it out within the week!

  • @alexandreleboucher3056
    @alexandreleboucher3056 7 років тому

    Wow first time I supported a youtuber on patreon. Keep-up the good work

  • @SajjQ
    @SajjQ 6 років тому

    how in the hell can anyone dislike these videos! these are amazing!

  • @chaitanyagunnu8295
    @chaitanyagunnu8295 2 роки тому

    I had no interest in controls until I saw this playlist. He is a pro in explanation.

  • @leolorenzo52raylewis
    @leolorenzo52raylewis 4 роки тому

    You should run for president! you have a gift at breaking down complicated ideas and explain them so easily to the common man!! hahaha

  • @annikak8101
    @annikak8101 6 років тому

    Thank you so much! I had already given up on understanding the logic behind Nyquist but now everything makes sense!

  • @mnada72
    @mnada72 3 роки тому

    You're awesome, in addition to a great lecture you provide great tools (matlab files)

  • @miguelsoto4628
    @miguelsoto4628 4 роки тому

    Thank you so much, maybe these are the only videos with a good explanation of the theme. Nice job :)

  • @cool4skull
    @cool4skull 11 років тому

    Thanks for sharing the matlab code and for the explanation on how you got such a nice Nyquist plot.

  • @dogukancetin8906
    @dogukancetin8906 5 років тому

    you've just saved my engineering carrier , thx bro.

  • @BrianBDouglas
    @BrianBDouglas  11 років тому +2

    I use Photoshop and a screen capture program. You can see exactly how I do it in my video titled "How I make a control systems lecture video". Cheers!

  • @bigbuckbunny9073
    @bigbuckbunny9073 8 років тому +1

    You've almost saved my life, no words can describe how grateful am I. If you can add some videos about z transform & discrete systems control it will be awesome because my teacher sux :D.

  • @GabiMartin97
    @GabiMartin97 5 років тому

    This video is a masterpiece. I had to watch it many times but I have learned a lot! Thank you very much sir, you are awesome

  • @indieelectroworks
    @indieelectroworks 4 роки тому

    Really nice videos (part 1 and 2). They help a lot to get an intuitive understanding of the topic.

  • @abhinavsixfaces
    @abhinavsixfaces 6 років тому

    Your videos are so easy to understand. Amazing work. I'll be buying your book when it comes out

  • @林佑-z9h
    @林佑-z9h 11 місяців тому

    Thank you, you just saved my final exam!!!

  • @nayanvats3424
    @nayanvats3424 6 років тому

    extraordinary ..Really takes a lot of effort to assemble all these heavy concepts at one place....thanks :)

  • @percywikham7936
    @percywikham7936 3 роки тому +1

    So Douglas, how much information can you pack in 16:39 minutes?
    Douglas: Yes.

  • @musicbox2310
    @musicbox2310 7 років тому

    I don't knowif your explanation is right or wrong, but I know it's awesome, I don't know why teachers whom I pay lots of money don't explain things like you do. Big like and all the best with your book Brian.

  • @talk2puluck
    @talk2puluck 11 років тому +1

    you helped me pass my automation course... thanks a lot..

    • @mayankjain6559
      @mayankjain6559 11 років тому +4

      u havnt passed yet :P

    • @talk2puluck
      @talk2puluck 11 років тому

      bishask said 4th year mein F nhi deta hai wo generally... :D