Enforcing lectures with Brain Douglas lessons since nearly 2 years ago. Now, starting lectures about plotting Nichols Charts from Bode Plots. Video posted 3 days after... I'm very lucky haha. Thanks.
@MOBATSim3 жыл бұрын
Nichols Plot is actually very useful if you have a multi-body system of a very high-order where you need to make sure that all the Eigenfrequencies and Eigenmodes of the system or bodies attached with springs and dampers stay in stable regions. Loop shaping is more intuitive by shifting these curves left and right by also using a combination of controllers such as combining a PID with an Anti-Notch filter simply by knowing their effects on Nichols Plot and adjusting the critical frequencies of the controller parameters.
@motivationalshorts38015 ай бұрын
can you help me like how to draw the graph of amp vs time @ 8:10 for a step response(in matlab)
@nidhishpanchal35173 жыл бұрын
the best Brian Douglas
@nated19713 жыл бұрын
Well, this would have been helpful yesterday......before my Control Systems final ;)
@EMRLaboratories3 жыл бұрын
You're not supposed to be watching control videos AFTER your final. You're supposed to be core dumping everything you learned during the term to make room for next term!
@nated19713 жыл бұрын
Core dump complete; except for Microwave Engineering. Need that for later
@malkaltayyab9765 Жыл бұрын
@@nated1971 man I can feel your pain.
@PunmasterSTP Жыл бұрын
I know it's been a year, but I just came across your comment and was curious. If I might ask, how'd the final turn out?
@nated1971 Жыл бұрын
@@PunmasterSTP I got an A; my Control Systems professor was amazing
@saadfareed10753 жыл бұрын
I like Bode plot bcz i understand them well...And Thank You for such a great video.
@malkaltayyab9765 Жыл бұрын
that man was right about forgiving him for adding trouble to understand with his speed! Man I have never lagged so much in my entire life. but that reminded of a meme, "SAY THAT AGAIN BUT SLOWLY", which is when I realized I could reduced the speed of video, at 0.75x. AND Man I understood! Thank-you MATLAB and Brian
@DLexEdition2 жыл бұрын
I use Bode and Nichols most often, only used the Nyquist in school.
@SMV197210 ай бұрын
Столько узнал за один короткий урок. Спасибо огромное!
@BrianBDouglas10 ай бұрын
Спасибо!
@martinarraztio3 жыл бұрын
Very well explained
@kwinvdv3 жыл бұрын
Another upside of the Nyquist plot is that one does not have to worry about phase wrapping. While phase wrapping could cause confusing in a Bode plot or Nichols chart, especially when dealing with noisy experimental frequency response data.
@andrealmeida_3 жыл бұрын
Brian, could you make a video about Bode Plots as a tool for controller design and stability margins in discrete systems (Z domain) in Matlab? Thank you so much for your videos, you're the best!
@user-saint Жыл бұрын
Thank you sir, you give me a clear concept.
@feras64712 жыл бұрын
Perfect explanation, thanks...
@hello_world_7873 ай бұрын
I agree that Nicholas plot is the best.
@blessoneasovarghese98343 жыл бұрын
Please make a video on PID tuning methods too......
@hayatabbas47322 жыл бұрын
Great explanation . Thanks
@josephma59613 жыл бұрын
Nice one Brian
@Amine-gz7gq4 ай бұрын
At 6:16 what does "lighty damped mode at 1 rd/s" mean ? At 1rd/s we have the highest gain what's damp got to do with it ?
@अण्वायुवरीवर्त3 жыл бұрын
First time hearing Nichols plot
@warzonecod1002 Жыл бұрын
You meantion Links in the description, I do not see any links to read further on the topic :(
@mainnevent5153 жыл бұрын
Thank you so much
@tendi.rutsate Жыл бұрын
Thank you so much!
@muhammedabdullah41102 жыл бұрын
really appreciated and keep doing
@RonnieSexton-g6b Жыл бұрын
Türkçe alt yazı ekler misiniz. Perfect explanation, thanks....
@REOsama Жыл бұрын
Very useful thank you
@JLveryToxic666 Жыл бұрын
i dont understand, why (-1,0) is unstable?
@hidennseek14837 ай бұрын
13:50 When I right click there I don't get the same menu and I tried everything I just don't have these options. Any idea how to get the ''All stability margins''?
@BrianBDouglas7 ай бұрын
Hmm, what version of MATLAB are you using? Do you see a menu at all and what options do you have?
@hassanvakani53243 жыл бұрын
What do you mean by minimum phase? As in minimum shift in phase over the change in frequencies?
@BrianBDouglas3 жыл бұрын
I explain it here kzbin.info/www/bejne/oHionKB6h9ikla8
@hassanvakani53243 жыл бұрын
@@BrianBDouglas thank you. Your explanation is on point. Probably the clearest to understand the intuition behind the idea of frequecy sweep.
@gokhankiremit43222 жыл бұрын
Hi thank you for video it is very helpful. I have input and output experimental data from time domain with constant frequency. For example, 0.01 rad/s, 0.1 rad/s, 1 rad/s, 10 rad/s. How can I convert these datas to frequency domain and plot bode ?
@Pateriyadivya2 ай бұрын
It was a good leacture, can someone please tell me why '20' is used in the dB equation at 4:14
@cicadaplebeja2 ай бұрын
(Just copy paste here) The factor of 20 comes from the properties of logarithms and is related to the base-10 logarithm used in the decibel scale. When we express the voltage gain in dB, we are essentially taking the base-10 logarithm of the ratio of the output voltage to the input voltage and then multiplying by 10 to convert the result to decibels. The factor of 20 specifically arises from the fact that power is proportional to the square of voltage. In other words, power is proportional to voltage squared (P ∝ V²). When we convert power ratios to decibels, we use 4010 \log_{10}41 because power is proportional to voltage squared. Since voltage is proportional to the square root of power, we need to multiply by 2 to account for this relationship when converting voltage ratios to decibels. This is why we use 4020 \log_{10}41 to convert voltage ratios to decibels. Therefore, the factor of 20 in the formula is a result of the relationship between power and voltage in the context of expressing gain in decibels.
@Pateriyadivya2 ай бұрын
Thank you @@cicadaplebeja
@kubigaming36063 жыл бұрын
am i right? if we want to check stability margins of our Control System we use those plots for open-loop systems and when we want to check for example BW(bandwidth) of our Control System we check closed-loop system?
@EMRLaboratories3 жыл бұрын
No. Stability of either an open loop or closed loop system can be checked with these plots. Presumably in many interesting control situations the open loop plant is unstable and the closed loop system makes it stable - you would generally apply this to closed-loop systems - he changes the plots with gain so you can see the changing margin. Bandwidth is the -3dB frequency.
@indramal3 жыл бұрын
Brian
@2008yaj2 жыл бұрын
Wow!
@RoboGenesHimanshuVerma3 жыл бұрын
But how will we obtain the Nyquist plot of Unstable system experimentally?
@malkaltayyab9765 Жыл бұрын
with open loop transfer func; as an input.
@bugrahana33953 жыл бұрын
I think that you have to add mikhailov plot actually
@motivationalshorts38015 ай бұрын
can anyone help me like how to draw the graph of amp vs time @ 8:10 for a step response(in matlab)
@BrianBDouglas5 ай бұрын
When I add links to comments they get rejected so instead, search for "step function MATLAB" and you'll see how to generate the step response of a dynamic system using the command step().
@Parende-fl9sn6 ай бұрын
make sure that all t
@dineshguleria19453 жыл бұрын
Is it Brain Douglas..??
@अण्वायुवरीवर्त3 жыл бұрын
Yup, The best.
@BrianBDouglas3 жыл бұрын
👋👋👋
@dineshguleria19453 жыл бұрын
@@BrianBDouglas hi brain can you group your video to create separate playlist on your channel .. I found you did for control system in practice, sensors, state space.. for MATLAB channel.. it will be easier to trace these videos through your channel..!!
@BrianBDouglas3 жыл бұрын
@@dineshguleria1945 I link to all of my MATLAB Tech Talk Videos at engineeringmedia.com/videos. They are grouped ... but not in a playlist.
@dineshguleria19453 жыл бұрын
@@BrianBDouglas very nice.. learner a lot .. from your videos... Helped to make a strong foundation on a control system..
@kasparskroics95083 жыл бұрын
I prefer Bode plott
@luismesquita82023 жыл бұрын
Video on PID control: kzbin.info/www/bejne/bWLSZZ98h6eNpM0
@WarzEdits3 жыл бұрын
bienvenue les gens de SCL
@ericarabarrington83122 күн бұрын
Wilson Nancy Lee Gary Davis Thomas
@SeadratulMontaha21 күн бұрын
Jackson Donna Lee Brian White Laura
@meryemcavlan503 жыл бұрын
Türkçe alt yazı ekler misiniz
@LyndMavisАй бұрын
Robinson Scott Lee Amy Jackson Donna
@jamesretreat2 жыл бұрын
so this is what my GARBAGE professor was trying to explain!!!