What is a PID Controller? | DigiKey

[@pekhotinyets]

I have watched many videos on PID control, but this is the one where it finally clicked.

[@cloverland1612]

Same here, finally I can wrap my head around this after so many other videos

[@micah2936]

This is honestly the BEST explanation of PID. I’ve watched many videos on it and read articles. I’ve just hear that it’s an “art” or that it’s something debated about, but nothing like this. This just straight into the facts and math.

[@ShawnHymel]

Glad you liked it! Tuning them can be a bit of an art, which I only briefly covered here :)

[@JL-to9vg]

Same here, even some of the "better" articles would neglect or leave out one element or another. He covered each mode and key aspects so well- it was like I could "see" each mode in action just from his explanations. TYVM, Shawn! I plan to share this with my class and possibly an instructor from a previous class.

[@ShawnHymel]

@@JL-to9vg Thank you! I hope that your students find the explanation useful!

[@grottyboots]

Brilliant! I love that the PID controller applies to so many widely varying systems... massive boilers operating on hour time scales, or as fast as modern motor controllers in the millisecond range.

[@ScientificThamizhan]

One of the best video that actually help you to understand how a PID controller works.

[@alejandromoreira9896]

Honestly, this is the BEST explanation of PID, although the SUM column is summed wrong.

[@jimomertz]

Shawn, you are such an excellent presenter! Looking forward to more. I really loved your KiCad tutorial series also.

[@pekhotinyets]

I still refer back to that series when I work on my boards

[@DennisSolari-r4z]

Wish I had you as my teacher when I was coming through the trade! I never claimed to be a sharp knife in a drawer, takes me more time for this material to stick. God Bless You for sharing this video.

[@tehmudjinkhan2207]

Been looking to get deeper into PID controllers. Perfect timing on the video.

[@erdum]

I was trying to understand this as an programmer for almost a year now finally I get it.

[@mruthyunjayamr7147]

There was such clarity and continuity in the explanations... Really liked and understood the concept clearly .... This was really helpful ....

[@hojvaelde]

Hello Just my own comment to your fine explanation. I have a hydraulic project where I have to control the force from a cylinder through a load cell. What makes hydraulics special is the response time. The used servo valves have a 0-50% opening time of 6 msec (common in servovalves). That's why I must use a PID regulator with a cycle time of 1 - 2 ms. There is only an expensive servo controller that can do that, or an analog PID controller, that I used. Another part you easily skip over is the partial feedforward. It is frequently used in hydraulics.

[@aliusef2912]

the best explanation on the PID controller I've ever seen on KZbin. thanks

[@amritpalsingh314]

Probably the BEST video on PID controllers.

[@dwagner6]

Would have been amazing if my Control Systems professor had just played this video for us

[@dwang085]

Same!!

[@4473021]

Shawn this was so good I wish my controls profs were this clear 😭😭😭😭

[@pabcet]

Shawn, this is one of the best explanation on PID, thanks a lot.

[@moneyhustle181]

The best PID video available on youtube 😂 thank you my friend!

[@odoggaspar6178]

The best PID control explanation.

[@JM-jk9vz]

I can't tell you how helpful this video has been and how often I keep coming back to it as a reference. Thank you!

[@vidtechnology7342]

I have watched many videos on PID , but this is the one from which I understand, Thanks

[@Akeshma]

Thanks for the explanation.. we need another video illustrate PID using Arduino

[@MrDevZero]

I though I could never understand PIDs. Great video.

[@spreaderikthierheimer9271]

This is an amazing explanation of PID THANK YOU!

[@rickh6963]

Shawn, another fantastic video. Thank you DigiKey!!

[@ellenamori1549]

This is an excellent explanation of the PID controller. Thank you so much for sharing this.

[@danielx-copter8001]

Endlich, nach ein paar Jahren mit diesen Erklärungen, konnte ich verstehen, was PID ist... Finally, after a few years with these explanations, I was able to understand what it is PID

[@TradieTrev]

Great video Shawn, out of all the courses I've taken about PID loops you've really explained the principles and terms spot on!

[@chinmayyande5024]

Thank you Shawn for diving into PID controllers. This is extremely helpful.

[@aashutosh3721]

Best ever pid explanation

[@506_SWALIHAATTAR]

Great video! Started as a noob, ended as a semi-PRO😎

[@willowdesk]

The beginning 60 seconds demystify the block diagram so much

[@dzorzstops5136]

Best explanation of PID EVER!

[@catalincostache6953]

Great explanation, is the best that I saw until now. The time interval should be in seconds ?

[@Factory400]

Excellent presentation as always!

[@Dr.Bigglesworth]

That is an excellent presentation. Best one I've seen that describes in detail actually what the P, I & D do.

[@andrewlohbihler6731]

Thanks Shawn, good example to follow with coding. Will try a desktop example with Arduino code.

[@rolfw2336]

Nice explanation, Shawn! I liked that there was a bit of math and a bit of code. PS: nice meeting you last week :)

[@ismenc]

i wish PID in universities were as simple as this :)

[@ShawnHymel]

I'm guessing that they give you the transfer function of the plant and have you solve the differential equation analytically. If so, yeah...that sounds rough 😅

[@ismenc]

@@ShawnHymel Exactly. Just to know in the next subject that everything of that has no real application because real world 'behaviour formulas' are complex and computers don't process feedback in real time.

[@machmanish1]

you are beyond awesome!!! what a smooth explanation! My PID worked in one shot following your lines....Thanks

[@TekCroach]

Thanks Shawn for this wonderful tutorial. You covered it in the most intuitive logical and exciting way. The best video on the subject. :)

[@joymakerRC]

I love you bro. thanks for filling in the gaps of my knowledge. I have been using the STM32 nucleo family to build a UAV controller. definately perfect timing for me too.

[@benarcher372]

Excellent description!

[@dnh534]

Beautifully explained PID

[@ganeshhampapura9842]

Clarity clarity and clarity God bless

[@francesconigri745]

efficient explanation of PID

[@nikitam6164]

Awesome video. I have never come across such cleanly explained example.

[@MrOnlineCoder]

Amazing video - clear, visually understandble, with a nice host.

[@leonardomarquez7914]

Great video, as usual Shawn is great explaining things in the simplest way.

[@jozefsoucik3115]

cruise control system was exact example what came to my mind as first when try to explain others:-)

[@ugetridofit]

Now we need a new method AIPID, or PIDAI. Where we slap AI to the PID for it to figure out the prefect values for us.

[@ShawnHymel]

You read my mind 😁 There are automated methods of finding PID constants, which have been in use for a while. I’m currently experimenting with using RL to figure out a generic controller (including swing-up). My hope is that this will be the next video.

[@rinokentie8653]

Very useful video, thanks.

[@kedarpuranik750]

This is the best video on PID!

[@joseph9915]

A car wouldn't have any overshoot if you just kept it floored until your set speed, would it? So wouldn't you only use the PID after you got up to speed? Maybe that will be part of the next episode. Anyway, thanks for the video, it helped explain PIDs nicely, looking forward to the next one.

[@dwang085]

You’d have to precisely let off the pedal at the right moment. The car has inertia and there is a time constant associated with the moment the pedal position changes to the moment the engine changes the torque applied to the wheels. All of that results in you having to letting off the pedal BEFORE the speed set point is achieved. Otherwise there would definitely be overshoot.

[@joseph9915]

​@@dwang085 My question was meant to be more about initial values, starting/stopping point for the PID and maybe when to use/swap out the PID. Sorry if I come across as nitpicking the model. But using it as an example: As soon as you stop adding power, it would stop going faster (well unless you are going downhill etc. but that sort of thing should be outside the model) And the amount of inertia needed to be overcome to move the pedal position would be small enough I don't think it would matter, probably even happen before the next piston power stroke. Especially with fuel injection etc. And even if it would take a very small amount of time for the accelerator to move, you could still hand over at 99.9km/h. (Although I guess whatever you are using to automatically move the pedal could be quite slow (erm, do they even move the pedal nowadays?)) As for the car, engine, flywheel etc. inertia would help keep the current speed. It can't add speed, or you would have a perpetual motion machine. So you shouldn't need the PID until you are up to speed? Anyway, my point being that in similar cases wouldn't it be better to hand over to the PID after a certain point, maybe with initial values taken from a table etc?

[@alfcnz]

This was great! Thanks for the informative lecture!

[@Torqueinxdirection]

perfect video with comprehensive explanation.

[@mostafanfs]

Shawn I have always loved your work no matter the topic. But this was awesome

[@boldattempt390]

Great video, very informative thank you. However can someone please say why the integral term Ki value was set to 0,01 in the example?

[@JeremySpidle]

Props! College level stuff here AND its accessible, even to beginners.

[@a_boy_can_dream]

You're awesome! Wonderfully well-explained!

[@salahh89]

What a great demonstration! Thanks a lot

[@ahmetcabri5348]

Thank you. It's a very useful video.

[@atuhuraalbert9487]

Good explanation

[@divya2225]

loved it . simple and easy to understand .

[@Jkauppa]

do you mean s=s0 + vt + ½at^2 balancer (position, speed, acceleration controller)

[@saeedamini8098]

absolutely brilliant. Thank you shawn.

[@fl4tcircl3]

This is so good!

[@micah2936]

20:18 setpoint was not defined, what is setpoint? Is that the set value we need? Also error_prev should be set equal to error at the end of the loop right Nvm I just wasn’t there yet lol

[@MePeterNicholls]

Now…. How do you make the tuning automatic/dynamic/inteligent 😜

[@MrApinder]

I’d like to hit the like button a thousand times

[@solomon337]

Great explanation

[@prabuddhajadhav2933]

How do you define interval? Like if I'm reading sensor value at every 1msec then interval =1msec????

[@tanjiro3285]

my fav man on ytb🤩

[@entertainmentjoke2871]

Good explanation but in reality, it is still hard to tune.

[@phantomaticscience6846]

teaching genius :)

[@chamodbandara5754]

thanks

[@borisbakardzhiev1673]

Black Magic!

[@BackyardFusion]

How is e(t) a wave curvy functions it should be linear

[@SimpleAnalogy]

NICE one..Thanks!

[@FemboyEngineer]

2:53 “accelerometer”? We don’t have electronics in our brain. We have vestibular canals,

[@mschwage]

Awesome video

[@ashinthaCARBON]

thank you ❤

[@jan-willemrensman]

Excellent ❤

[@mountainsite]

11:51 These go to 11.

[@jeffreyfontenot8803]

Very confusing to me, you start by saying 5 cm pedal position = 100 km/h then immediately contradict that on first calculation showing pedal position 10 cm yielding 30 km/h.

[@NovaH00]

First, "5 cm yield 100 km/h" means after you get to 100 km/h, if the pedal at the 5cm, the speed stay at 100 km/h and won't change. Second, it is "10 cm at 30 km/h" not "10 cm yielding 30 km/h". 10 cm at 30 km/h just means the car is at 30 km/h and it is accelerating

[@googleyoutubechannel8554]

While this explanation is of course correct, the presentation here is very poor, I recommend other videos, the graphs for instance, just graphing 'error' is weak pedagogy, for the classic speed example, you should be graphing speed vs t at the very least, and even better, animating a car or a dash speedo. PID is very simple, if you have ever played with a spring, like everyone has, this concept is trivial, but the math symbology and the control theory archaic jargon confuse everyone.

[@lumek88]

Don't guess or use ancient tuning method.