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This video is so much better than the previous one

I didn't understand almost anything and now i'm now more confused than ever, thank you for that :S Thanks for all the content, but without examples it's hard to understand. Why two-joint can be shown as a torus exactly? Show it with an example, because without that for a beginner is just like nothing, it can mean anything. And why suddenly two points on a rigid body can be transformed to 2 spheres with a (circle?) between? Why you suddenly added a C point? Seriously, this is incredibly confusing. Take it as a good advice anyways

Pro tip: the cross product is anticommutative, so -omega × q can be rewritten as q × omega. Which is much easier to remember and will make programming much simpler by eliminating an easy to introduce error

How do we make sure that the generated trajectory in within reach of the robotic arm?

شرح صعب جدا وغيرمفهوم

1:00

sir while finding fk for body frame we start from theta1 but for space frame we start form theta3 why is that??

He does not know how to teach sadly

i couldn't understand how Js3 is unaffected by joint 3's rotation

Hi I want to ask you why we don't write the linear velocity for revolute joint in sin and cos?

thanks for these amazing videos & book

Mind-bogglingly helpful. Thank you for making this public.

In the torque equation at 5:05 it should be c(theta)*theta dot instead of c(theta, theta dot) right?

Hello sir ...can you help me?

I wish he explained things in a simpler way. Not all of us are experts on linear algebra.

Thanks for the video. I didn't understand how when specifying C, we have moved B away from the circumference of the point A. Isn't B supposed to be at the circumference of A?

Where is the joint 3 and 4?? I only see one prismatic joint at the end

Can i position the wheel with one of the wheel not same distance?

how to calculate the rotation speed of mecanum-wheel wheels on a four-wheeled vehicle in rad/s please give the formula

Great video for finals review

You explain it perfectly. These explanations are very lucid. Thank you..

how to do this for a floating base system ?

SE(3) 0:42

Woooohoooo! Thanks for this

very nice, thank you.

For Decouple Task-Space Control, is w_e the matrix log of R^T*Rd or element-wise log?

4:18 How do you identify dependent constraints though?

prof. at 2:56 you said "Unlike a holonomic constraint, this velocity constraint cannot be integrated to give an back equalent constraint config. " can you prove it by mathematically.

Thanks professor, very clear and nice lecture

What is convex hull of the control points/via points ?

Thank you

This is so cute I randomly ended up watching his videos he seems like a really good professor that most students would love. and he explains the concepts really well. I also majored in mechanical engineering but even the basic things he explains hit me hard.. amazing man

These videos have given me a lot more respect for mechanical engineers as an electrical engineering student. This math is pretty tough!

1:51 How could I have not thought of subscript cancellation in changing reference frame!! This was super intuitive.

The best video that explained more about the introductions to control engineering. Weldon Sir❤

OMG, you are literally giftwrapping humanity for the robots!!!!

this is some hardest way to explane DoF

what is Ad??

ruclips.net/video/VxUpd1_O540/видео.html

Could you explain please, how you estimate optimistic cost-to-go from 1 to 6 by 20?

I don't understand a thing 😂😂😂

Great discussion! Thank you!

so what is the equation for currentpose of x,y, theta for non-holo robot?

Best

Best !!

Excellent explanation, thank you!

Hi, I was hoping you could answer something about the angular velocity vector: When I take an angular velocity omega in 3 space and decompose it into its x, y and z components, omega_1, omega_2 and omega_3 respectively, we expect the magnitude of the angular velocity vector to be: |omega| = square root of ((omega_1)^2+(omega_2)^2+(omega_3)^2). However, if you think about the rotation of a body described by the omega vector: Let's say it does one full rotation in 1 second. Physically, the projections of this rotation onto the yz plane, xz plane and xy plane correspond respectively to the x, y and z components of omega above and each of these projections (of the body onto the respective planes) all undergo one full rotation in 1 second also. So, on the face of it, the angular velocities of each of these components are on average (over one rotation) the exact same as the magnitude of the angular velocity of our vector omega (if we trace out the motion of the body itself and the motions of the projections of the body): |Omega| = omega_1 = omega_2 = omega_3 This contradicts the decomposition above. Can you explain what's going on here and what assumptions above are false. I would be very grateful if you could offer help with this as I can't get answers anywhere else. I'm interested in fitting the mathematics with the relevant physics. Thanks.

One question I got is: what if the robot is under load?

On these videos some of them even a three yrs old kid could understand it while others are like math crazy AF

Thought this was going to be beginner friendly