What Is Robust Control? | Robust Control, Part 1
Ғылым және технология
Watch the other videos in this series:
Robust Control, Part 2: Understanding Disk Margin - • Understanding Disk Mar...
Robust Control, Part 3: Disk Margins for MIMO Systems - • Disk Margins for MIMO ...
This videos covers a high-level introduction to robust control. The goal is to get you up to speed with some of the terminology and to give you a better understanding of what robust control is and how it fits into the larger control field.
A system is robust if it’s capable of meeting requirements (usually stability or performance measures) even in the presence of model or disturbance uncertainty. Basically, it’s being able to say, I don’t know my system perfectly or the environment it’s going to operate within, but I’m confident it’s going to work!
And robust control theory is how we get that confidence. It’s a method or an approach that we can use to design a system in a way that can handle uncertainty.
In this first video, we put some intuition behind these definitions.
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Пікірлер: 48
NO ONE ELSE KNOWS HOW TO TEACH CONTROL ON THIS PLANET EXCEPT BRIAN DOUGLAS! he is like the god of control professors to me.
@joshuamitchell2275
3 жыл бұрын
check out Steve Brunton
Always a joy to hear brian explaining any topic!
@BrianBDouglas
4 жыл бұрын
Thanks!
Hi your lectures are very intuitive and easy to understand. Kindly also make videos on Model Predictive Control (MPC) and Robust MPC
Thank you very much Brian that you are sharing your videos and knowledge and you are here in this world! God bless you and your family!
Thank you for these Tech Talk series with Brian
Great video and very intuitive explanations. Thank you!
Brian your explanation is phenomenal.
Jesus I love you Brian it's time for some robust control!
Thanks Brian, will presented.
you just opened my mind in how do we calculate things as we have complex variables included. tks buddy.
@BrianBDouglas
6 ай бұрын
I'm glad this helped!
really informative and useful
Hey Brian. Nice video. This is exactly the subject I need for my work. When will the videos for H-infinity controll be released? That would be good to know if I have to inform myself about other sources or if the videos will be released in the next few days. I would be really happy to see your videos, because they are very illustrative.
Thanks Brian, we've been looking forward to a series on robust control
@BrianBDouglas
4 жыл бұрын
Thanks! I hope you enjoy it. I've finished the next 4 videos in this series and I'm really happy with how they've turned out.
@ogunsadebenjaminadeiyin2729
4 жыл бұрын
Thanks @Brian Douglas I'm looking forward to seeing the new videos.
Thanks for the eye opening
Brian please do video on loop shaping, Hinfinity and H2 controllers
this is the best place to learn control engineering
thanks!!!! very good vedio!
Hi, Brian your videos about control theory is great , I hope you will talk about MPC controller :)
7:36, how do you go from the phasemargin at a certain frequency to delay in timedomain? Thanks in advance!
There are cases (big gain or delay) when PID control output (u) changes fast between 0 and 100%. What if we add bounds for its speed (u-dot)? Is it a robust method?
I hope you will include H-inf controller in the next upcoming videos 😊
Please make a video on LPV control.
I have a temperure data, how can I robust this data? thank yoy
Can someone tell what’s the benefit of the generalized plant representation? Couldn’t find any intuitive explanations
Thanks Brian, really good job! Any chance to share the live script?
@BrianBDouglas
4 жыл бұрын
Sure, I just posted it to my GitHub. github.com/aerojunkie/control-tools/blob/master/classical_margins.mlx
@smozer
4 жыл бұрын
Thanks@@BrianBDouglas
I am an anglophone and francophone, I'd like to advocate for a French subtitle in order to make the video profitable for francophones. Thank you for this great video @Brian Douglas
In 7:35, why does 70deg of Phase margin equal to 3 second time delay?
@ricardoolaguivel4958
2 жыл бұрын
First convert the value 0.406 from rad/s to deg/s ... then divide 69.8 deg to the converted value, with that you obtain seconds, in this practically 3
Hello brian and everyone, I just learned about this topic "robust control ', can you please tell me a reference that is easy to understand about this robust control, Thanks for the great video!
@dimasmulyaputra5038
3 жыл бұрын
A Book or something about Theory and Practical, thanks
Brian, any chance one day we can have some hardware in the loop lab?
@ricardoampudia1633
4 жыл бұрын
In this video he designs a real controller with hardware in the loop: kzread.info/dash/bejne/f5asl6uGeaa5j7w.html
Hi, Anyone who could answer how the Pm=69.9 deg (at 0.406 rad/s) is equivalent to appr. 3 sec. Please look at the video at 7:35. Thank you very much for your help and support!
@ramiveiberman3182
Жыл бұрын
Since the frequency w=0.406 rad/s we can deduce that the period T=2*pi/w=15.6 sec. Here comes the cool part. Phase margin of around 70 degrees means that the sine wave gets shifted by 70 degrees. Since each 15 sec period has 360 degrees we can reach the conclusion that delay= T*PM/360=3.02sec
I often wondered how manufacturers designed controllers for mass produced goods. The answer is robust controllers.
I have never heard of disk margin. Is this similar to the modulus margin?
@BrianBDouglas
4 жыл бұрын
It is similar in that they are related to the shortest distance between the Nyquist curve and the -1 point, but there is more to disk margin than that (for example, you can skew the disk center. You may want to do that if you believe you have more uncertainty in one direction over another.) The next video is on Disk Margin and will explain it in more detail :) Although, I removed the section where I showed how the inverse of the disk is related to the -1 point on the Nyquist plot. So, maybe a better option would be to check out the original paper here: arxiv.org/abs/2003.04771
Brian?
@BrianBDouglas
2 жыл бұрын
Hi 👋
@closingtheloop2593
2 жыл бұрын
@@BrianBDouglas Dude you saved me in undergrad controls. How do I buy you a beer?