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Quan Chi2

Introduction to Robotics (CS223A)

I thought that I'd point this out. There seems to be a lot of electrical engineers on here, and I imagine that some are into artificial intelligence. These lectures are very understandable and hold a lot of great information.

I just figure it's useful to point out in case none of you have stumbled upon it.

Samapico · Posted: Tue Jan 20, 2009 2:46 pm *Post maybe stupid* Post subject:

Jacobians... I hate those
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Quan Chi2 · Posted: Sat Jan 24, 2009 2:23 am *Post maybe stupid* Post subject:

I have no personal experience with them at this point.

Samapico · Posted: Sat Jan 24, 2009 3:47 am *Post maybe stupid* Post subject:

You don't want any experience with them. They're a pain in the butt.

Basically it's a matrix that can tell you the speed and angular speed of the tool at a particular position. It looks like 'if axis 1 is rotating at 1 rad/s, the tool will be going 3 m/s in X, 1 m/s in Y, and with an angular speed of...
Something like that.

Quan Chi2 · Posted: Sat Jan 24, 2009 7:12 am *Post maybe stupid* Post subject:

Samapico · Posted: Sat Jan 24, 2009 8:25 pm *Post maybe stupid* Post subject:

The interesting part is to make the robot move around and do stuff

Sercit · Posted: Sat Jan 24, 2009 11:37 pm *Post maybe stupid* Post subject:

Pff. My kind of robots have axes and hammers.
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Samapico · Posted: Sun Jan 25, 2009 3:47 am *Post maybe stupid* Post subject:

Pff. My kind of robots have missile launchers and pulse lasers

Initrd.gz · Posted: Sun Jan 25, 2009 6:45 pm *Post maybe stupid* Post subject:

Blocks · Posted: Sun Jan 25, 2009 8:52 pm *Post maybe stupid* Post subject:

Looks like something from MechWarrior.

Since you haven't learned linear algebra or its applications to kinematics, when you get to rotations, try learning quaternions!

Samapico · Posted: Sun Jan 25, 2009 9:58 pm *Post maybe stupid* Post subject:

We use ABB robots at university, they're new from last semester... And for some reason, they use quaternions to define positions. Even though a lot of controllers use those to calculate stuff, it's pretty weird (and useless, imo) to ask for quaternions to the user. Could be because it's an interpreted language, instead of compiled, so they did that to save some cpu time or something.
Of course there are functions to convert from euler angles to quaternions and back, but they're still annoying

And yes, that image is from mechwarrior, though I think it's a fan-made image, but yeah...

Quan Chi2 · Posted: Tue Jan 27, 2009 5:00 am *Post maybe stupid* Post subject:

Samapico · Posted: Tue Jan 27, 2009 4:34 pm *Post maybe stupid* Post subject:

Not sure if we can call this a major, cause our system is pretty different here in Qu?bec... But I'll have a bachelor's degree in automated production engineering. It's a program unique to my university, they developed it... It's a mix of electrical engineering with industrial engineering, with some mechanical and programming skills. Starting from the 3rd year or so, there are 4 branches we can choose classes from (we don't have to pick classes all in the same branch): Manufacturing systems, Industrial computer science, Aeronautic production, and Health technologies.

These are my own translations from french, but it's pretty much that.
I'll personally take maybe 50/50 of manufacturing and computer science classes