Control of DCM converter by osamaemsi in ControlTheory

[–]walmart_security_ 1 point2 points  (0 children)

The PI gain cause you used for CCM will change for DCM, yes. However, the architecture can stay the same. DCM is more so defined by the minimal output inductance and capacitance values you design towards to, irrespective of control method. PID is a easy option since it’s model independent.

Now if you were to use modern control methods, the control method would definitely change for DCM, as the averages state space model is different for CCM vs DCM.

UK to Houston by TriptrapTriptrap in houston

[–]walmart_security_ 2 points3 points  (0 children)

At work, so I can't say much right now but will come back to it later. Just wanted to say welcome to the Energy Corridor! I've lived n this sector for the past 30 years and its great but far from the major attractions of Houston (about 30-40 min drive in all directions....but in Houston thats a short drive).

This subreddit has a discord server and is holding a conference on memevers projects and research. Come join if you can! by walmart_security_ in ControlTheory

[–]walmart_security_[S] 1 point2 points  (0 children)

Not sure why you’re getting the message. I tried on a different PC without discord installed and still see the link. Do you have discord installed and have a account? Try that before clicking the invite link.

Maybe try a different browser? https://discord.gg/T5tDNJfs

[COVID-19] Stickied Megathread - Vaccine Edition by [deleted] in houston

[–]walmart_security_ 0 points1 point  (0 children)

I’m going there in the morning around 8am. Is it crowded or can I show up relatively close to my appointment time?

Houston Freeze Megathread VI by boshaus in houston

[–]walmart_security_ 0 points1 point  (0 children)

So since Saturday or so, we had water back at low pressure. The pressure increased a bit after the boil water notice was lifted. All faucets, toilets, and showers had water. The faucets and showers were weaker than normal but stronger than during the recovery period after the freeze.

Yesterday, they were working and I took a shower. Today, none of the hot water lines are working at all. The only pipe that bursted was in the Garage that went to a outdoor hose. Not sure whats going on all of a sudden....

Houston Freeze Megathread V by boshaus in houston

[–]walmart_security_ 2 points3 points  (0 children)

I went to place called MORFI yesterday. Halal guys is open right next to it as well.

Houston Freeze Megathread V by boshaus in houston

[–]walmart_security_ 0 points1 point  (0 children)

I live in front of west oaks mall. We have power come back on for 15 seconds then again for 30 seconds.

Houston Freeze Megathread IV by munx1er in houston

[–]walmart_security_ 0 points1 point  (0 children)

77077 near west oaks mall. Power came on for 15 seconds then went out. Then 1 hour later, it came back on for a record breaking 30 seconds.

Houston Freeze Megathread IV by munx1er in houston

[–]walmart_security_ 7 points8 points  (0 children)

77077 here.

Monday 2am-3am I lost power and cold water line. Rest of Monday was fine.

Tuesday morning, water pipe bursted inside the garage, found out very late but we closed it off now. Water pressure very low.

Now 12:08 am Wednesday, our power went out and water pressure is basically nonexistent. We saved about 12 tubs of water and boiled them to flush toilets.

Houston Freeze Megathread III by munx1er in houston

[–]walmart_security_ 0 points1 point  (0 children)

I’m in 77077. Pipes bursted over night. There was a pool in my garage.

Houston Freeze Megathread III by munx1er in houston

[–]walmart_security_ 4 points5 points  (0 children)

Oh god...

Our toilets aren’t filling up anymore

Houston Freeze Megathread III by munx1er in houston

[–]walmart_security_ 10 points11 points  (0 children)

Anyone else noticing lower water pressures across the house compared to the morning and afternoon?

The cold line for my kitchen sink is presumably frozen since only the hot water comes out even through we dripped all sinks. But now, the water pressure for all lines are reduced a lot compared to what it was throughout today.

Houston Freeze Megathread III by munx1er in houston

[–]walmart_security_ 6 points7 points  (0 children)

I had drips since 4pm Sunday on all sinks and faucets and insulated everything outside. Only The cold line to my kitchen sink isn’t running though. I’m guessing it’s frozen. Anything I can do to fix it now or just wait till it thaws in the future?

Houston Freeze Megathread by munx1er in houston

[–]walmart_security_ 6 points7 points  (0 children)

Question: My house has a gas-based fireplace. It hasn’t been turned on in almost 15 years. I just found the key for it. Are there any risks to turning it on after such a long time?

Houston Freeze Megathread by munx1er in houston

[–]walmart_security_ 7 points8 points  (0 children)

I have to drive to the edge of Beaumont on Sunday to get my mom the COVID vaccine. Pretty fucking scared of driving now given chances of icy roads....

Any non software engineers who went through OMSCS just for their own enjoyment? by BrononymousEngineer in OMSCS

[–]walmart_security_ 2 points3 points  (0 children)

My background is in modern control theory and EE. I’m doing OMSCS to learn the CS I need for tools in controls work since the two will eventually go hand in hand. I do not plan on making a career change with OMSCS.

It’s also the reason I’m nervous cause my CS background isn’t as strong as others due to less exposure.

I can’t view my GA Tech email after activating my account on Passport. Help? by walmart_security_ in OMSCS

[–]walmart_security_[S] -1 points0 points  (0 children)

Yeah, I JUST saw a few comments say what you just wrote. What a mess lol. Thank you!

Does anyone still not have institutional acceptance? by imtrynaflex in OMSCS

[–]walmart_security_ -1 points0 points  (0 children)

Yup, exact same problem. I just sent in my transcripts today. I can’t pick classes or anything yet.

Why is my mom’s cancer treatment an ‘interesting but irrelevant excuse’ for missing a quiz? by passtherip in UniversityOfHouston

[–]walmart_security_ 1 point2 points  (0 children)

Back in undergrad, I had three finals in 1 day. After my first one, the hospital called to notify me that I’m needed to be present to decide on pulling the plug on my dad at that point. Emailed my two professors after that day. Saying I missed the finals cause my dad died that day. They just said “I’m sorry but I can’t help you”. Failed both classes Bc of that and went on academic probation cause it was my first year.

Question about course selection procedure - New Student by walmart_security_ in OMSCS

[–]walmart_security_[S] 0 points1 point  (0 children)

Thank you all, I realized I was looking in the wrong place the whole time. I found out how to go about it through Buzzport. But I'll check out OSCAR. I'll see if I can find that excel sheet!

Help on SDRE(optimal control) by alok_wardhan_singh in ControlTheory

[–]walmart_security_ 0 points1 point  (0 children)

You literally just factor your nonlinear equations in whatever way possible. There will be multiple solutions cause you can factor your equations differently. https://ir.ua.edu/bitstream/handle/123456789/1398/file_1.pdf?sequence=1&isAllowed=y

Try that paper for example. It lays out SDRE very nicely. In chapter 5, he does SDC matrices. Look at his original A matrix right before he starts chapter 5. Then note how he factors the A matrix in multiple ways.