PIDs Simplified

Taking an extremely simplified look at what P I and D are and how they relate to each other.

[chrispietersen]

After watching countless PID videos to try and get understanding of PID separately, I can honestly say that your video was by far the most straight forward, easy to understand and straight to the point. Simplicity is key and you did that super well! Thank you so much!

[TrFusion]

D is watching sudden change of position within the fraction time to give feedback. It does’t matter where the target is.
So ..
1. Set P for the smooth and sluggish curve.
2. Set I to help add power to P if it is taking too much time to get to the target.
3. Set D to push the power back if I is doing too much work and excessive acceleration.
P I’ll try to get to the target.
I I’ll give you extra power because you are taking too much time.
D I’ll slow you down because I is giving too much power and detected sudden movement in short period of time.

[TormodSteinsholt]

P term is a rubber band with a resting length of zero. It needs distance to produce tension. If you increase the load on a rubber band, it needs to stretch further in order to produce the correct tension. This is insufficient for a regulator since you expect a regulator to compensate. The I term naturally complements the shortcoming of a rubber band. And since both pull towards the setpoint, you need the D term to compensate to avoid overshoot.

[tazblink]

I have to write and say thank you. I built a PID box to control oven temps and I have been screwing with it all day. I knew what I wanted it to do but I just didn't know how to get there. Your explanation of D solved my problems. I was getting a 20 degree over and 10 degree under oscillation. Now I am getting a .1 to .3 degree over oscillation and thats it. It holds at exactly 167.0 to 167.3. Perfect for killing covid-19 on masks gloves whatever. I am using 2 oven thermometers to verify the temp and it is dead nuts. Again thanks so much I hadn't heard D explained that way before and it all clicked when you said it. TAS

[pjohnston]

I've seen a lot of pid videos, but this graph does a great job demonstrating what is going on. The graph is very informative
Thank you!

[NVTCGames]

I play stormworks and have been trying to figure out how these work for a millennium without using just the P value and this man is a saviour

[WacekDziewulski]

This is just about the best explanation of PIDs ever! I've watched a lot of videos on the topic including Joshua Bardwell's PID tuning masterclass and as much as I appreciate his practical approach, You've just nailed it in theory! Understanding Your video gives one a clear view on the Anti-Gravity and Feed Forward in Betaflight. Thanks for allowing me to grasp the whole thing. Awesome job! Subscribing for more!

[tigerseye]

As an electrician, I sometimes had to tune PID for process temp. control. I was able to muddle through it but it was sometimes frustrating. Wish I could have viewed your channel years ago. Thankfully, most micro controllers now have auto-tune feature. Turn it on and let it do its thing. Your video can be applied to many different control application. Thanks for sharing.

[liuyanxin]

That’s a really great presentation, now I got some basic understanding of PID control! Thx a lot!

[michaelosinowo]

this is the best theoretical
explanation so far

[nofianto]

your explanation about PID basic concept for drone is the best... easy to understand and simple....

[dk]

OMG finally someone to dumb down PIDs for me! I have been searching forever! Thank you much!!

[WhipGear]

The best explanation of quad tuning I have seen thus far... You are the Khan Academy of quad-copters... Keep up the good work.

[kaushalmody]

Great job man, simplified PID explanation.
Just what I wanted.

[BayLA]

best discription i ever head out off all the videos i ever seen on tuning. i wii finally be able to tune my quad.. thanks a lot for breaing it down in a way anyone can understand and not just making stuff up....

[ardentdfender]

One the best explanation I’ve come across watching quite a lot of PID vids. Still trial and error in tuning goes a long way. Especially if you got a very good updated trend to look at on a short time scale like inn15-30 min span or so. That allows you to see how things are playing out on a trend in adjustment as you try to smooth things out.

[FAB]

This is the best explanation I have ever encountered, thank you!

[marien]

Thank you for making me understand the use of each one of the three terms. Before this explanations, everything was like XYZ in mathematics, but from now on i will have in mind what PID means when calculating. It will make a big difference, thanks to you.

[samuelpaes]

OMG, YOU ARE THE BEST, I AM A BRAZILIAN STUDENT OF ELECTRICAL ENGINEERING AND YOU HELP ME SO MUCH, THANKS MAN

[jjoe]

Referring to the beginning of the explanation: P term, as i understand it. does not slow down or speed up. That is derivative. P term also does not move back and fourth. That is Integral. The P term tries to move to the target, but because of physics, it ends up being in the wrong place. It outputs proportional to the input. If the p is 2/1, it outputs 2 for every 1. It is one number, the desired destination. Integral and Derivative correct the errors.