Recent content by TOTA42

The reason why we can use PID control for an inverted pendulum is because the problem can be linearized, found this in a guy's thesis in our engineering library. We used the LEDs to see if there was anything odd/wrong with our timing, and we found out there was. There were some brief moments...

The motor is directly attached to the pendulum via a arm assembly, similar to the link I posted above. There is no gear train/chain, we avoided making an inverted pendulum via a pendulum attached to a toy car just because of that reason. I'll add the LEDs Monday, when the lab open, and see if...

I'm thinking it's a control issue, if we don't pay attention to the system, the motor spins helluva quick that it occassionally rips the cable that connects to the optical encoder that the pendulum is attached. The only downside I can say about this motor is that it doesn't have a great "jerk"...

Hey guys, I was just wondering if some guys could help me with our group's senior design. Our project is to design and build an inverted pendulum. I think I made a thread a while back talking about H-bridges, which is to be the motor's driver. We are using an arm assembly which one end is...

So far the stepper motor looks like it functions correctly. We pulsed the motor at really low speeds to see the actual steps and we also made a quick program to see if there were 200 steps in a revolution for a 1.8 degree step. As for your question for the one mosfet not being inductively...

Yesiree, 464, gotta love it. 1. Yes it's always the same side/corner, however it's still the same even after we resolder the wiring, change the MOSFETs, diodes, and even changing where that particular node connects to. Its a little ah heck. We even asked Dr. Bostick and Grady to take a peek...

Sorry if it seems confusing. No, I didn't make 4 drivers. To create one driver, I used 4 pairs of N-Channel and P-Channel MOSFETs for a total of 8 transistors. Each pair to drive each end of the coil, A, and B. Here's the Schematic which drives one coil of the motor. So basically I have two...

I was wondering if somebody could take a crack on why I am getting this bug. I am doing an inverted pendulum for my senior level design, and we decided to make it somewhat harder (yeah, we're not the brightest EEs), by making it an arm-driven one rather than using a cart. We're using a Vexta...

That's not really true, Non-inverting opamps do not give postive feedback. Positive feedback is where you take the opamp's output and connect it to the non-inverting input of the Opamp and negative feeback is where the output is fed back into the inverting input. What you're talking about is...

I'm a 4th year EE at UT and I don't even remember hearing any of this stuff, what class are you taking that you deal with this? The only time I messed with FPGAs is EE321k.

I'm sure there is a thread like this somewhere, but I couldn't find it with the search string "arctic silver". I just recently got a new CPU fan so I decided to place some Arctic Silver 5 on it and try it out. Now the question is here, how much lower does this thermal paste reduce in...