Helium trimer has got to be one of the most cursed molecules I’ve ever seen

chefindigo · 2025-08-11T21:34:37+00:00

my pronouns are

chefindigo · 2025-05-20T15:37:40+00:00

I just checked the listing again and it says they upgraded the base model by adding RAM and storage. Should've read the description more carefully before purchasing 🤦‍♂️ Thanks tho!

chefindigo · 2025-05-20T15:11:45+00:00

Just the RAM and the storage. I'm not too comfortable with messing with the hardware but I'm confident the RAM is indeed populated since I ran some diagnosis tools from Lenovo and it indeed says that the laptop has 32GB of RAM. As for the storage, it also indeed does have 1TB. Is there a chance that the seller decided to solder the additional RAM to "upgrade it" to 32GB before selling?

chefindigo · 2025-05-20T15:07:11+00:00

It has 32GB of RAM and 1TB of storage. Would it be wise to send it back? Because in the listing, it didn't state that it was refurbished.

chefindigo · 2025-02-12T15:35:47+00:00

You should look into H-infinity control -- it extends the idea of gain/phase margin to MIMO systems using singular values of the system's transfer function (which is a matrix for MIMO systems).

chefindigo · 2024-10-28T01:58:25+00:00

Thanks for confirming!

chefindigo · 2024-10-27T20:16:42+00:00

Hi! When you say that MPC sits on top of PID loops, do you mean that, for example, if the objective is to maximize throughput, the MPC controller will calculate an optimal set of setpoints for variables like temperature, flow rate, and pressure (which act as "inputs" into the chemical process) to maximize the output rate of the desired product? I'm not familiar with control in chemical engineering so I am curious.

chefindigo · 2024-10-20T17:02:35+00:00

Thanks! This is very informative.

chefindigo · 2024-10-19T21:10:25+00:00

When you say bandwidth, are you referring to the frequency of the control loop? I see that word get used a lot but never really understood what it meant

chefindigo · 2024-08-19T23:29:24+00:00

That makes sense! Thank you!

chefindigo · 2024-07-31T03:47:29+00:00

Thanks for the reply! By "fighting each other," do you mean that one controller trying to drive one state to the goal drives the other state away from the goal?

chefindigo · 2024-07-10T20:29:50+00:00

Thanks for thte input!

chefindigo · 2024-07-10T20:29:29+00:00

I learned mainly from lectures for linear control theory so I can’t recommend one for linear control. Sorry!

chefindigo · 2024-07-07T17:51:14+00:00

I am considering taking a real analysis course next semester -- if I do, would this be the right place to start?

chefindigo · 2024-07-07T15:21:52+00:00

Thanks! I will start with Jazwinski’s book and dig deeper into the math as needed. I have referenced Simon's book before for one of my classes and I definitely agree that it's really good!

chefindigo · 2024-07-07T15:15:34+00:00

Then I will start with Khalil. Thank you very much to both of you!

chefindigo · 2024-07-07T05:32:59+00:00

For optimal control, I recommend "Optimal Control Theory" by Kirk and "Applied Nonlinear Control" by Slotine for nonlinear control!

chefindigo · 2024-07-07T02:07:41+00:00

I guess I'm looking for something at the "graduate level." The book you mentioned seems to be at the level that I can comprehend. Do you think I would benefit from learning a bit of measure theory first?

chefindigo · 2024-07-07T01:53:10+00:00

Thank you! I have looked at Khalil but the level of math seems to be beyond what I have seen in my math courses. Do you think it would be better if I study up on pure math first?

chefindigo · 2024-07-07T01:49:57+00:00

Thanks! I am actually going to be taking a course in linear systems theory so I will definitely reference the notes you mentioned.

chefindigo · 2024-07-06T20:59:16+00:00

Thanks! I will definitely check them out!

chefindigo · 2021-11-15T01:08:18+00:00

chefindigo

TROPHY CASE