ME207 DC Motor Model Equation Derivation

[@bman9469]

I'm so glad to find this video. Struggling on controls hw for a couple weeks and it's finally coming together. Thank you!

[@DarckT7]

Lmao same boat! Any chance youre taking 3500?😂

[@tanveerali4754]

Thanks Matt, you deliver an awesome lecture, things are well explained. I wasn't able to implement this model on MATLAB due to the mathematics involved but after watching your lecture, now it's easier to do so.

[@MattBilsky]

Glad to hear it! I will be uploading a few videos over the next couple of weeks that demonstrate the equations experimentally so please subscribe if you would like to be notified when they're posted

[@tanveerali4754]

I did it already. will be waiting for the videos.

[@spelunkerd]

On the surface I thought I understood how dI/dt goes to zero with a motor at steady state. But then I considered how the commutator sends current to each winding for only a short pulse of time as the armature spins. Even at steady state, individual coils get continuous pulsations of voltage and current, so dI/dt is not zero at steady state for individual coils. So, why don't we see more prominent inductance from a motor even at steady state? Does the rotation of the armature against the force of the magnetic field consume the energy of that inductive kick? Or, is it better to think of rotation as generating backward voltage by movement of the coil through the field, cancelling out the repetitive inductive forces happening in each individual coil? Or, should I be thinking of the motor as a whole, with some coils discharging while some are charging, all sharing those reactive changes so the net effect is a small inductance?

[@ABeautifulMind936]

Thank you, Matt. You presented materials that I was exactly looking for. Just subscribed and hoping more videos to come.

[@stefanodiloreto1932]

goat vid, just helped me with my hw, bless this man

[@abubakarm.abubakar3996]

Excellent! presentation, you are not comparable must of our lecturers Naija will be great

[@MattBilsky]

Thank you!

[@alex.ander.bmblbn]

Thank you for the lecture. Please, tell me, are you writing on a transparent board from right to left? How long did it take you to learn to do that?

[@danielblackmer1342]

I am suspecting that he is writing on a glass transparency, then flipping the video left / right in post.

[@alex.ander.bmblbn]

@@danielblackmer1342 hmm, that would explain him being left-handed in the video

[@MattBilsky]

It's called the one button studio at Lehigh University and is a plate of glass with the camera on the other side so the video is reversed. I'm right handed

[@SindhiScienceChannel]

I fail to understand replacing s.theta(s) with theta'(s). Can someone explain?

[@abeljimenez9798]

Hi Matt, really good video. Just a question, can you describe the units in the mechanical equations, I can not understand how is everything canceled correctly and balanced in the equation. For instance I will have radians for theta and the Torque is only N.m

[@ronaksamani2807]

Fantastic, do you have a series for this lecture?

[@MattBilsky]

mattbilsky.com/mediawiki/index.php?title=Dynamics,_Controls,_and_Mechatronics_Senior_Lab_ME_207

[@alielwelatech7650]

Thank you Mr. Matt

[@muhammadrafii8751]

how to calcultae if the voltage increase?

[@mohamedalamoodi3373]

how do you write on the screen thanks for the video

[@il400]

you write on a clear board infront of the camera and then flip the video in the edit he's probably right handed but he appears to be left handed due to the flip

[@mattveron3248]

Hi sir can you able to teach me how to rearrange DC motor equation

[@pawx_fpv]

why are the k (Torque constant, Kt) in the mechanical system and k in the electrical system (back emf constant, kb) used as the same "k" with your k^2?

[@MattBilsky]

In SI units, Kt and Kv are the same

[@pawx_fpv]

Matt Bilsky thanks! I missed that, at 11:50

[@malebolegologela7267]

What if you want to model DC motor system using Lagrangian technique

[@nanangroniwibowo1022]

I think your graphical betwen speed and voltage start with speed zero for v(0)

[@MattBilsky]

If you are referring to the plot around 1:30, then yes, the line should actually start at 0 (realistically, a little to the right on the x axis as well). But it was drawn to just show the general relationship, not to be literal.

[@MrTomatensoep123]

at 19:14, why does the s*theta(s) not come through to the equation on the right? edit: nevermind haha, you notice it a minute later

[@Croesus21]

does it possible to make a third order model of dc motor?

[@princesstahir6765]

Thank you Mr. Matt may I ask you for mathematical modeling of direct control of BLDC motor? , please

[@hulkmania9487]

Yes actually i also need bldc motor. Modelling on simulink with controller can u help?

[@chandramahesh9137]

@@hulkmania9487 give me your what’s app number bro

[@aroojfatima7057]

@@hulkmania9487 did u get anything regarding it? I need it now

[@enroute3]

hey Bra ! what about the load torque which oposes the electrical torque ??? you only stated the frictional Torque "Bw"...the correct equation of the mechanical side should be, Te-TL-Tw=J d/dt (w)

[@MattBilsky]

Haftom, the model is just for the motor itself, not with any external load. If you wanted to model an external load then yes, you would need to subtract out the load torque. Please refer to the link in the description from the University of Michigan which describes the model being talked about further. If you have a specific question on another source/model I am happy to try to assist.

[@enroute3]

Ohhh Yeah, Thank you so much Matt !!! you gave me a good lecture...am first year mechatronics Engineering student and I will need your help further !

[@MattBilsky]

I will be uploading more videos in the next few weeks on this topic. Please subscribe to my channel to be alerted when they are posted.

[@enroute3]

Tnx Matt !

[@mrowl3511]

can someone add english subtitle please

[@مهرةالوهيبي-ج2ل]

Thank you

[@tcaotuesday2358]

Really excellent video!!

[@pinoymixstudio4758]

Thank you. you explained it very well.

[@meriemziane2138]

thank you so much it's been very useful

[@johnolivercenteno3407]

thank you sir! :D

[@huifa4306]

Thank you so much!! 👏

[@mohammedal-obaid6713]

Thank you :)

[@j.j.b.13]

You are handsome and smart.

[@MattBilsky]

Thank you :)

[@bguiles1]

The content is great but the squeaking marker makes this unwatchable.

[@EsraAbay200]

I want to ask you about the subject of electromechanics, if there is a specific source that I can study on, a source from the United States University. Because I am not a university. And if I can contact you to inquire if you have an Instagram or Telegram account.