@@marcusscaff00 Hey this uy puts it tgether and makes it TONS easier to make something like this.. Even i tried the youtube+books way and its a pain to put it together ad the books cost too but then i found this miracle guy and he saved a centuries worth of pain So please, lets appreciate hin!
*once posted on RUclips these are toys no more.* The fact remains what the World bankrupts their entire People can indeed be done without any theatrics whatsoever. Sadly our position in life is so much a construct of what we *think* the Media thinks we want instead of in fact thinking what any of us both collectively and individually want.
Martin Lydon Hey random stranger, I do not know what you are going through, but I know what I went through. If you are similar to how I felt then you are probably really depressed, feel alone, and anxious, and maybe even going a little insane... and I am not here to tell you it is as simple as continuing living. It’s not. You probably need a big change in your life. New job, different classes, or whatever. My point is that you just need to be patient and work with what you have. For me, I changed programs in school from mechanical engineering into the automation field. All of a sudden I was doing stuff I couldn’t have imagined months before. It made me excited everyday to wake up and go to school, or now a days, work! The truth is that it’ll be a difficult road, but you stick to that road, and you may find an intersection full of options. Options that you will look at and say “It was all worth it. All the pain, the loneliness, the sadness, it was worth it.”. It made me see life in a new light. Like I had a purpose. I hope at the very least my message gives you hope, and it helps you understand that you aren’t alone in that feeling, and that there will be a silver lining. It took me two years and I still have days where I feel beaten. But I have more days where I feel like a king, where the world can’t stop me from being glad, and I hope you get to that point too. Because there truly is no better feeling than knowing you conquered your lowest point in life.
The comment the guy at the end made sums it up really well it’s so cool to see the progress over the three NARCON presentations! Can’t wait to see the next one man!
I'm currently a 3rd Year Space engineering student in Australia and I have to say, we learn so much theory and orbital mechanics at university but you are by far the easiest to understand and implement in model rockets! Big kudos and I'm super happy that I discovered your channel, +1 subscriber
Great work, Joe. For someone that isn't formally trained in this field, you're really knowledgeable and doing a great service to the hobby and community. The comments and evident respect from those present are a clear testament to your contributions and growing expertise. Well done and keep it up!
@@viralvidsrepository4632 He doesn't have an engineering degree. He has a degree in physics and used that as a solid foundation to learn about rocketry.
Joe please make these type of videos (educational types) more often so that we get help to build our own rockets. BTW THANKS FOR UPLOADING SUCH A GREAT CONTENT.
Agreed. Last thing we need ist for velocity to be represented by (royal public hair length)/(time until a stone dropped from the tower of London hits the ground)
This guy explains this stuff so well its insane. I hate learning from Academia because they love to muddy the language with all sorts of words and stuff, that you just lose sight of what their tryna teach. This dude is like the feynmann of model rocketry lol.
3:25 currently at Florida tech, doing a design project on point to point launch and landing at the model scale. Was genuinely shocked when you mentioned vector bravo! Good vid
@@bugass81 Not even low fat? I still think it needs to be tried - for science! There are some interesting propellants in this test, but not milk yet ruclips.net/video/3QOF4tqBUis/видео.html
Really cool PID explanation. And btw your progress on Sprite is amazing. I don't know what's your plans for the future, but with all that knowledge BPS might be within few years delivering components or services for commercial cargo landers (moon or planetary stuff). Am I crazy? 🤔
I'm a D to F candidate in math and physics (by idleness)... and I still watched the whole thing listening to a whole bunch of words I only have vage concepts of in my head and I still enjoyed his enthysiasm. xD
None of your "rough video quality" impacted your presentation in a negative way for me. Great job!! I edit "rough" videos of others all the time. You Rock Joe! PS: try unplugging the HDMI and reinserting next time, could be a quick fix for screen issue.
Brilliant presentation, especially loved your summary of PID control. I've been tinkering with GNC in Simplerockets 2 (which is basically a more technical version of KSP) for the last couple of months and it's so interesting to hear you explain something that took me all those weeks to sort of "reinvent" myself. It's kind of fascinating how so many people end up with the same solution to a problem.
That is likely Trip Barber of NOVAAR#205. He is an MIT graduate, ex Naval ship commander, and has been doing rocketry and NARAMs for 50 years, Since NARAM-10. He has seen, experimented, and experienced presentations of most of the R&D papers and experiments submitted by NARAM R&D researchers regarding TVC and guidance of model rockets. His nodding is recognition of the process historically, so he is very well aware of the TVC projects before and since Joe's projects. He chronologically and topically compiled all of the R&D reports of NAR since 1957. The following is just the section of papers and flown NARAM projects regarding guidance and control of model rockets Joe was likely using as process knowledge and research resources. Guidance: Active Guidance & Dynamic Flight Mechanics for Model Rockets, David Ketchledge, HPR Jul 93, 17p. Analytic Study of a Pendulum Guidance System in a Model Rocket, Don Venhaus, MITCON Proceedings 74, 2p. An Electrolytic Guidance Unit, Peter Sauer, MITCON Proceedings 73, 1p. A Guidance System for Model Rockets, Alan Bilger, MR May 74, 5p; ltr response, Mike Wende, MR Feb 75, 2p. Ram Air as a Method of Rocket Control, Forrest Mims; Part 1, MRM Feb 70, 5p; Part 2, MRM Mar 70, 3p. Rollerons: Simplified Roll Control for Amateur Rocket Vehicles, David Crisalli, HPR May 96, 6p. Vertical Trajectory Guidance System, Steve Ainsworth, HPR Mar 99, 6p. Capacitor Discharge Guidance, Forrest Mims, MRM Nov 70, 2p. Development of a Sun-Based On-Board Guidance System, George Gassaway, NAR TR-204; NARAM 30 R&D, 1988. Sun-Seeking Guidance System for High-Power Rockets, David Mandot, HPR Nov 96, 5p. Gyroscope-Controlled Guidance System, Steve Ainsworth & Brian Riordan, HPR Nov 96, 4p. Development of a Gimbaled Engine Mount for Use in Guided Rockets, Zunofark Team, NARAM-31 R&D, 1989. Gimbaled Propulsion, Dave Gianakos, HPR May 93, 3p. Active Stabilization Flight Computer, Brian Guzek, NARAM 51 R&D, 2009. Electronic Stabilization of a Rocket, Alyssa Stenberg, NARAM 55 R&D, 2013. Gyro Guidance System in Rocket Gliders, Alyssa Stenberg, NARAM 56 R&D, 2014.
So I've been writing scripts for KSP rockets for a while now, and kinda got scared off from PID controllers since I didn't understand them. Thanks to this ( 33:00 - 42:00 ) I now understand exactly what they are. I can even identify that I've written mostly proportional controllers, but I also a Proportional-Derivative controller on one occasion. Thank you so much for this. It's so hard to find good verbose descriptions of these things online
Thank you for this Joe. I started playing around with arduinos a year or so ago but I could never find the right application to learn about and loose myself in. Then I started 3d printing water rockets for my kids. Omw how much fun is that. I'm so glad I found your channel. Let's see if I can get a few things up in the air. Great work man!
Great video. Now that small hobby drones are popular, we have readily available tiny control boards with the microprocessor and all the needed sensors pre-built. Much smaller and more suitable than something like a Pixhawk.
its just incredible: i just was coming to your channel again after few days so i could ask you for the stuff i need for a school project and now... i dont need to ask you answered all of my questions without hearing my questions xD thank you :)
I is what will get u back on track. Removes offset. D is what is responsible for quick changes and future predictions. However it will/can cause “windup” the fastest, and needs to be looked at closer than I. Windup will occur faster with D than anything.
Thank you soooooo much! I started an aerospace club at my college. We're starting to work with weatherbaloons right not and this talk was a huge help with the hardware!
Awesome. I would love to see a more in-depth video on the whole control analysis. I’m taking control of dynamic systems in college right now, and I think it would be awesome to see how you solved a real problem with it.
“And I’m being Really exhaustive with covering all this stuff ” did no one else find this pun! Hilarious 😂 And thank you for sharing this, I would like to get into this type of thing when I actually have money so huge thanks
In gliding we use the MS5611 barometric pressure sensor a lot. They might be more precise than what you're used to, but the membrane also acts as accelerometer if you have vibrations.
Wow.... PID controller huh? Amazing how nothing changes but the names. Pretty sure this used to be called a servo control loop back when I was younger 😂😂
Very clear presentation on your project! I am a nerd on this topic but I understand what you mentioned. Thank you very much for showing us what you did. Congratulation!
Awesome explanation I'm currently trying to build my first tvc controlled rocket and it already helped a lot. But I have one question if you're simply adding the derividive back into the loop you'd get, in your example, 1°+2°=3°. wouldn't that mean that you're accelerating even more since you're pushing the engine even further outwards Did I miss something or is there another problem I just don't see.
Hello @ Matt. In what way is the 388 updated from the 280? Just asking as I am in the middle of this serious learning curve here. I'll compare both nevertheless.
I tune PID controllers at work fairly often (and I wrote one for a PLC a long time ago. The supplied controller was better). I work in gas processing and oil transportation btw. This was a great explanation. Initially I thought that using Derivative in something as fast as controlling a rocket launch but I'm not sure. We use D when there's a lot of deadtime. It's both brake and accelerator btw (depends on the direction of the correction). However SP and PV are normalized. Ie SP is 0-100%, PV is 0-100% of range, and CV (output) is 0-100%. Our time scales is much longer... ie minutes vs a rocket which is a couple of seconds or a few thousands of milliseconds. Something to think about...
IMUs have high sample rates, but BMPs have very low sample rates coupled with some hysteresis. Is there a modern alternative for determining altitude, besides BMP and LIDAR?? Please and thank you! Great talk.
This was TERRIFIC! I have only one suggestion and that is to balance a broomstick (preferably on your nose) as a graphic representation of the forces and logic (and difficulty) involved! 👍😎
Great info - thanks! One thing: at engine burnout, at any real velocity, there's usually quite a large deceleration. I'm confused by the statement around the 22:00 mark that acceleration at burnout is zero. So this assumes a positive acceleration only, yes? This negative acceleration (deceleration), of course, has been long used to actuate staging switches in model rockets (originally, mercury switches).
what i find to be awesome about Joe Barnard is how he says smart stuff in a funny way. He always gets to the point, but usually throws a laugh in their. its not a skill many posses.
Dealing with LiPos when I first started with servos and DIY RC planes was f u c k i n g terrifying. Looking back I should have read up a lot more and become far more confident before I got going.
I was wondering about the use of a sliding tube for variable Krushnic effect (fine down-throttling, especially at landing) combined with four side ports in that tube which would be opened and closed to possibly cause some degree of thrust vectoring.
I thought about using computer vision on a laptop to triangulate the position of the model rocket in 60 FPS from at least two cameras (GoPros), send commands, and use the data to quickly solve for landing. This approach is harder and not as practical. The other approach is the use of beacons. The model rocket pings a WiFi/ Bluetooth signal and receivers on the ground triangulate it’s position very accurately using a trained neural net. You can plot the points and use a physics engine on a laptop to make predictions, then send instructions to the model rocket to take. The downside is that the receivers cannot be blocked and the triangulation becomes less accurate as the model rocket moves farther away.
This dude basically explained the bulk of a semester's worth of Control Systems Class in a span of 30 mins. Before you can write the code of a closed loop system, you need to model the system to figure out modeling the time and frequency domains. The annoying part is having to calculate for solving steady state errors. TL;DR. If you want to be good at control systems. Master modeling the system first, and after that you essentially just add them up (Being very vague here). I'm lazy and just use a function found in MATLAB to do the calculations for me.
Came here to meme about how did I end up here (SpaceX binge). Ended up watching the whole thing, refactoring some code I was working on to be more "state machinish" and dusted off my old (3 years) arduino kit and googling projects to get back in the groove.
This man could have kept all this to himself and let other struggle. A SAINT
"the files for this are available on my website"
.......
for $35 lol
@@snarfmcsnarf7383 So? This is literally his full-time job
@@snarfmcsnarf7383 lmao, hes just trying to make money with his half knowledge.
u can study this from books and RUclips
@@marcusscaff00 Hey this uy puts it tgether and makes it TONS easier to make something like this..
Even i tried the youtube+books way and its a pain to put it together ad the books cost too but then i found this miracle guy and he saved a centuries worth of pain
So please, lets appreciate hin!
Thanks for the shoutout there, Joe!
I am also your watchers
@@jagdishahire8104 We appreciate it!
=D
From a guy who is at a really low point in his life .......... you give me hope and inspiration to chase undreamt dreams!
*once posted on RUclips these are toys no more.* The fact remains what the World bankrupts their entire People can indeed be done without any theatrics whatsoever. Sadly our position in life is so much a construct of what we *think* the Media thinks we want instead of in fact thinking what any of us both collectively and individually want.
@@georgedoolittle7574
You just posted cringe.
@@jeffvader811 *just do what your told and you'll be fine* indeed..
@@georgedoolittle7574
Ah yes, I too understand S O C I E T Y.
Martin Lydon Hey random stranger, I do not know what you are going through, but I know what I went through. If you are similar to how I felt then you are probably really depressed, feel alone, and anxious, and maybe even going a little insane... and I am not here to tell you it is as simple as continuing living. It’s not. You probably need a big change in your life. New job, different classes, or whatever. My point is that you just need to be patient and work with what you have. For me, I changed programs in school from mechanical engineering into the automation field. All of a sudden I was doing stuff I couldn’t have imagined months before. It made me excited everyday to wake up and go to school, or now a days, work! The truth is that it’ll be a difficult road, but you stick to that road, and you may find an intersection full of options. Options that you will look at and say “It was all worth it. All the pain, the loneliness, the sadness, it was worth it.”. It made me see life in a new light. Like I had a purpose. I hope at the very least my message gives you hope, and it helps you understand that you aren’t alone in that feeling, and that there will be a silver lining. It took me two years and I still have days where I feel beaten. But I have more days where I feel like a king, where the world can’t stop me from being glad, and I hope you get to that point too. Because there truly is no better feeling than knowing you conquered your lowest point in life.
Finally, a clear explanation of what a PID controller is and how it works.
The comment the guy at the end made sums it up really well it’s so cool to see the progress over the three NARCON presentations!
Can’t wait to see the next one man!
I'm currently a 3rd Year Space engineering student in Australia and I have to say, we learn so much theory and orbital mechanics at university but you are by far the easiest to understand and implement in model rockets! Big kudos and I'm super happy that I discovered your channel, +1 subscriber
By the way: You would make a great teacher / professor!
He already is, just in a different setting than we're traditionally used to and without the formal titles...
Here we go again, science class on RUclips.
You have done such a great work. Thank you for sharing. God bless you!
Great work, Joe. For someone that isn't formally trained in this field, you're really knowledgeable and doing a great service to the hobby and community. The comments and evident respect from those present are a clear testament to your contributions and growing expertise. Well done and keep it up!
"I'm being really 𝘦𝘹𝘩𝘢𝘶𝘴𝘵𝘪𝘷𝘦 by covering all of this stuff" lol
that's why you need an engineering degree
@@Silverlightnick Yes like Elon.
@@viralvidsrepository4632 He doesn't have an engineering degree. He has a degree in physics and used that as a solid foundation to learn about rocketry.
@@Bob-rh9fk Unnecessary.
@@viralvidsrepository4632 What is?
I see what he did at 3:38 lol "Being really exhaustive" :P
Joe please make these type of videos (educational types) more often so that we get help to build our own rockets.
BTW THANKS FOR UPLOADING SUCH A GREAT CONTENT.
Just wanna appreciate how you use metric.
Was gonna say the same.. beat me by 4weeks lol
Physics is all metric which I am glad is.
Metric is easier to learn
Agreed. Last thing we need ist for velocity to be represented by (royal public hair length)/(time until a stone dropped from the tower of London hits the ground)
@@TheIBeanz Hasn't the UK always used metric?
This guy explains this stuff so well its insane.
I hate learning from Academia because they love to muddy the language with all sorts of words and stuff, that you just lose sight of what their tryna teach.
This dude is like the feynmann of model rocketry lol.
Youre an inspiration. I'm not planning on going into rocketry right now, but your spirit and drive is remarkable!
I was watching your 2019 conference then suddenly notification of this vid.. Came😎😎😊😊
Akhil C Me too. This is my source of sexual satisfaction
wow, the way you tell everything, etc is so exciting! And now that you share all these things with us is so cool.
This contains a very good explanation of how PID controllers work. Thank you.
It's actually one of the better I've seen.
THIS IS TYPE OF CLASS THAT I WOULD LIKE TO ATTEND EVEN ON SUNDAYS
ONE REQUEST PLEASE MAKE A WEBINAR ON THE THE TOPICS THAT YOU LEFT INCOMLETE.
This right here...ladies and gentleman is why we need to pay educators top dollar. This is how you move the generations to the next level.
3:25 currently at Florida tech, doing a design project on point to point launch and landing at the model scale. Was genuinely shocked when you mentioned vector bravo! Good vid
That is one of the best explanations of a PID controller I've seen so far. Thanks a lot for sharing your knowledge!
I finally understand calculus now after watching a video on rocket science. :p
Oh hey its that milk guy
😂😂😂
seriously tho, where is the sequel?!?!?
Maybe he needs to fly a rocket on presurised milk?
@@simonabunker Nah, that'd probably clog valves and it won't be as good as a water rocket. Milk is surprisingly sticky.
@@bugass81 Not even low fat? I still think it needs to be tried - for science! There are some interesting propellants in this test, but not milk yet ruclips.net/video/3QOF4tqBUis/видео.html
Your way of teaching/presenting is excellent, calm and humorous and addictive. Thanks a lot.🙌
Really cool PID explanation. And btw your progress on Sprite is amazing. I don't know what's your plans for the future, but with all that knowledge BPS might be within few years delivering components or services for commercial cargo landers (moon or planetary stuff). Am I crazy?
🤔
The way you've cleaned this up and composited it make it great to watch- thank you for that and the content!
My teacher tried to explain what a PID controller does but you summed it up so much easier!
I'm a D to F candidate in math and physics (by idleness)... and I still watched the whole thing listening to a whole bunch of words I only have vage concepts of in my head and I still enjoyed his enthysiasm. xD
None of your "rough video quality" impacted your presentation in a negative way for me. Great job!! I edit "rough" videos of others all the time. You Rock Joe!
PS: try unplugging the HDMI and reinserting next time, could be a quick fix for screen issue.
Such a good lecture I sat there for 50 minutes.
Lecturing skill
That was actually a really good explanation of how PID controllers work. Thanks!
This presentation was very high quality! The slideshow was also the most coherent and easily readable slideshow I have ever seen. Great Work!
Brilliant presentation, especially loved your summary of PID control. I've been tinkering with GNC in Simplerockets 2 (which is basically a more technical version of KSP) for the last couple of months and it's so interesting to hear you explain something that took me all those weeks to sort of "reinvent" myself. It's kind of fascinating how so many people end up with the same solution to a problem.
I love how the bald guy with the red shirt is nodding approvingly!
Scott Manley, is that you?
That is likely Trip Barber of NOVAAR#205. He is an MIT graduate, ex Naval ship commander, and has been doing rocketry and NARAMs for 50 years, Since NARAM-10. He has seen, experimented, and experienced presentations of most of the R&D papers and experiments submitted by NARAM R&D researchers regarding TVC and guidance of model rockets. His nodding is recognition of the process historically, so he is very well aware of the TVC projects before and since Joe's projects. He chronologically and topically compiled all of the R&D reports of NAR since 1957. The following is just the section of papers and flown NARAM projects regarding guidance and control of model rockets Joe was likely using as process knowledge and research resources.
Guidance:
Active Guidance & Dynamic Flight Mechanics for Model Rockets, David Ketchledge, HPR Jul 93, 17p.
Analytic Study of a Pendulum Guidance System in a Model Rocket, Don Venhaus, MITCON Proceedings 74, 2p.
An Electrolytic Guidance Unit, Peter Sauer, MITCON Proceedings 73, 1p.
A Guidance System for Model Rockets, Alan Bilger, MR May 74, 5p; ltr response, Mike Wende, MR Feb 75, 2p.
Ram Air as a Method of Rocket Control, Forrest Mims; Part 1, MRM Feb 70, 5p; Part 2, MRM Mar 70, 3p.
Rollerons: Simplified Roll Control for Amateur Rocket Vehicles, David Crisalli, HPR May 96, 6p.
Vertical Trajectory Guidance System, Steve Ainsworth, HPR Mar 99, 6p.
Capacitor Discharge Guidance, Forrest Mims, MRM Nov 70, 2p.
Development of a Sun-Based On-Board Guidance System, George Gassaway, NAR TR-204; NARAM 30 R&D,
1988.
Sun-Seeking Guidance System for High-Power Rockets, David Mandot, HPR Nov 96, 5p.
Gyroscope-Controlled Guidance System, Steve Ainsworth & Brian Riordan, HPR Nov 96, 4p.
Development of a Gimbaled Engine Mount for Use in Guided Rockets, Zunofark Team, NARAM-31 R&D, 1989.
Gimbaled Propulsion, Dave Gianakos, HPR May 93, 3p.
Active Stabilization Flight Computer, Brian Guzek, NARAM 51 R&D, 2009.
Electronic Stabilization of a Rocket, Alyssa Stenberg, NARAM 55 R&D, 2013.
Gyro Guidance System in Rocket Gliders, Alyssa Stenberg, NARAM 56 R&D, 2014.
I just noticed
Boy, that integral sign is sooo musical!
I think he has a music degree.
Just starting to write the software for a homemade drone, this video has the best PID description I've ever seen. Thanks Joe!
Im ½ way through, excellent explanations so far Joe. 👍
So I've been writing scripts for KSP rockets for a while now, and kinda got scared off from PID controllers since I didn't understand them. Thanks to this ( 33:00 - 42:00 ) I now understand exactly what they are. I can even identify that I've written mostly proportional controllers, but I also a Proportional-Derivative controller on one occasion. Thank you so much for this. It's so hard to find good verbose descriptions of these things online
Wow, one of the best explanations of PID control out there! :D
Joe you are the man! Thank you for helping push the community forward.
I know nothing about rockets and have never flown one, but I watched this whole video and it was captivating.
Thank you for this Joe.
I started playing around with arduinos a year or so ago but I could never find the right application to learn about and loose myself in. Then I started 3d printing water rockets for my kids. Omw how much fun is that. I'm so glad I found your channel. Let's see if I can get a few things up in the air.
Great work man!
Great video. Now that small hobby drones are popular, we have readily available tiny control boards with the microprocessor and all the needed sensors pre-built.
Much smaller and more suitable than something like a Pixhawk.
i've been waiting for this presentation you do every year in march :)
These control maps are golden.
Best explanation of PID control I've ever seen.
its just incredible: i just was coming to your channel again after few days so i could ask you for the stuff i need for a school project and now... i dont need to ask you answered all of my questions without hearing my questions xD thank you :)
This was great! I love your way of explaining just like any of your videos. You're a great teacher!
You're*
@@seandimmock5813 Word Crimes
Thanks for the help milkman- The software design has been the biggest factor keeping me from starting a project like this one
I is what will get u back on track. Removes offset.
D is what is responsible for quick changes and future predictions. However it will/can cause “windup” the fastest, and needs to be looked at closer than I.
Windup will occur faster with D than anything.
Hi Jo! Really enjoyed your talk. Great way to introduce PID
Thank you soooooo much! I started an aerospace club at my college. We're starting to work with weatherbaloons right not and this talk was a huge help with the hardware!
Thanks for sharing your precious knowledge. It’s people like you who make platforms like RUclips great! Best of luck
this is a really great description of a PID controller. Great stuff.
Awesome. I would love to see a more in-depth video on the whole control analysis. I’m taking control of dynamic systems in college right now, and I think it would be awesome to see how you solved a real problem with it.
Great presentation. You are truly gifted and talented person. Natural in front of an audience. Thanks for sharing it with us.
“And I’m being Really exhaustive with covering all this stuff ” did no one else find this pun!
Hilarious 😂
And thank you for sharing this, I would like to get into this type of thing when I actually have money so huge thanks
@23:40 now I understand your Tweet Joe ;-). Love this stuff btw!
You would make an awesome uni lecturer!
10:50 microcontroller options :=
12:25 Inertial measurement unit options =
13:05 Barometric Pressure Sensors options =
16:00 Data Recoreders options =
Following you from the start,and really impressed with the progress and achievements you have done on your own,this was really helpful!!!👍🔥
Hey Joe, its always great to catch your videos :) Don't have much more to say... just: Thank you :)
Great talk! I just ordered a bunch of parts for my first tvc rocket so this will help a ton! Thanks for doing this
I didn't understand much of this but thank you my dawg, ima start pursing this
Thank you very much for sharing your knowledge, best regards from Germany
In gliding we use the MS5611 barometric pressure sensor a lot. They might be more precise than what you're used to, but the membrane also acts as accelerometer if you have vibrations.
Wow.... PID controller huh? Amazing how nothing changes but the names. Pretty sure this used to be called a servo control loop back when I was younger 😂😂
Been waiting so long for an episode like this! Keep up the good work! :D
Thank you very much. It will surely help early aspirants and hobbyists like me to start with.
That was best way to explain PIDs !!! Love it! :)
Thank you so much ❤️ 😊 Joe sir
We all love you
Thanks
thanks Joe this was relay the thing i needed to see to get my tvc rocket off the ground you are an inspiration : )
32:00
Nice Closed Loop Presentation.
Explains oscillations.
Very clear presentation on your project! I am a nerd on this topic but I understand what you mentioned. Thank you very much for showing us what you did. Congratulation!
What an amazing presentation. I learned so much. Thank you
He had his own little 'middle out' moment for a couple mins starting at 17:14
::D & P Giggle giggle::
Appreciate the exhausted approach.
Awesome explanation I'm currently trying to build my first tvc controlled rocket and it already helped a lot. But I have one question if you're simply adding the derividive back into the loop you'd get, in your example, 1°+2°=3°. wouldn't that mean that you're accelerating even more since you're pushing the engine even further outwards
Did I miss something or is there another problem I just don't see.
Thanks, that's a very understandable explanation of PID controllers.
13:10 get the BMP 388- It's basically an updated version of the 280
Hello @ Matt. In what way is the 388 updated from the 280?
Just asking as I am in the middle of this serious learning curve here. I'll compare both nevertheless.
Love the presentation. answered many of the questions i had.
Helping so much! I'd love to see more content of this type!
I tune PID controllers at work fairly often (and I wrote one for a PLC a long time ago. The supplied controller was better). I work in gas processing and oil transportation btw. This was a great explanation. Initially I thought that using Derivative in something as fast as controlling a rocket launch but I'm not sure. We use D when there's a lot of deadtime. It's both brake and accelerator btw (depends on the direction of the correction). However SP and PV are normalized. Ie SP is 0-100%, PV is 0-100% of range, and CV (output) is 0-100%. Our time scales is much longer... ie minutes vs a rocket which is a couple of seconds or a few thousands of milliseconds. Something to think about...
IMUs have high sample rates, but BMPs have very low sample rates coupled with some hysteresis. Is there a modern alternative for determining altitude, besides BMP and LIDAR?? Please and thank you! Great talk.
This was TERRIFIC! I have only one suggestion and that is to balance a broomstick (preferably on your nose) as a graphic representation of the forces and logic (and difficulty) involved! 👍😎
Great info - thanks! One thing: at engine burnout, at any real velocity, there's usually quite a large deceleration. I'm confused by the statement around the 22:00 mark that acceleration at burnout is zero. So this assumes a positive acceleration only, yes? This negative acceleration (deceleration), of course, has been long used to actuate staging switches in model rockets (originally, mercury switches).
I love you bps I'm young and all my friends make fun of me but u make my day.
And this video is helpful! i just started to learn c++ and i made a board like the blip one!
what i find to be awesome about Joe Barnard is how he says smart stuff in a funny way. He always gets to the point, but usually throws a laugh in their. its not a skill many posses.
Dealing with LiPos when I first started with servos and DIY RC planes was f u c k i n g terrifying. Looking back I should have read up a lot more and become far more confident before I got going.
Very clear and concise presentation, Thanks!
I was wondering about the use of a sliding tube for variable Krushnic effect (fine down-throttling, especially at landing) combined with four side ports in that tube which would be opened and closed to possibly cause some degree of thrust vectoring.
Definitely a humble person
39:00
Excellent, clear.
PID class in 10 minutes..💪🏻
I thought about using computer vision on a laptop to triangulate the position of the model rocket in 60 FPS from at least two cameras (GoPros), send commands, and use the data to quickly solve for landing. This approach is harder and not as practical.
The other approach is the use of beacons. The model rocket pings a WiFi/ Bluetooth signal and receivers on the ground triangulate it’s position very accurately using a trained neural net. You can plot the points and use a physics engine on a laptop to make predictions, then send instructions to the model rocket to take. The downside is that the receivers cannot be blocked and the triangulation becomes less accurate as the model rocket moves farther away.
Definitely gave me the motivation to start. Thumbs up!
This dude basically explained the bulk of a semester's worth of Control Systems Class in a span of 30 mins.
Before you can write the code of a closed loop system, you need to model the system to figure out modeling the time and frequency domains. The annoying part is having to calculate for solving steady state errors.
TL;DR. If you want to be good at control systems. Master modeling the system first, and after that you essentially just add them up (Being very vague here). I'm lazy and just use a function found in MATLAB to do the calculations for me.
Came here to meme about how did I end up here (SpaceX binge). Ended up watching the whole thing, refactoring some code I was working on to be more "state machinish" and dusted off my old (3 years) arduino kit and googling projects to get back in the groove.