fluorinerocket

Insane to me that someone would use a windows machine to run a piece of equipment when PLCs exist and are supported for decades by companies like Rockwell, Siemens, Allen Bradley

Terrible explanation

Why don't the "In my country" posters ever name the country

I am certainly in the minority and I do live with it.

Things like motion sensor lights, faucets that turn off so quickly that you have to hold your hands in weird position to wash them, 1.6 gallon flush toilets are all completely avoidable things that are forced on us by a misguided sense of doo gooding.

These so called innovations are WORSE than what they replaced, less reliable, and often are so badly designed they accomplish the exact opposite of what they are intended to do.

A increasing retry time motion sensor light switch is a good idea. But then again, wherever these things are installed, they go with the cheapest thing that to meet code and get whatever energy certification.

Zero Fs are given by the people who don't have to use the room. The worst thing will be what is used. That is my experience.

Oh you want to change the timersetting? Guess what that's on a dip switch behind the face plate, and you need to find and shut off the breaker and pull the thing from the wall. Put in a ticket to facilities, we'll get to it never

Yes let's make you flush 5 times to save 0 water over a conventional while we run the sprinklers to keep our immaculate lawn green during a 105 degree summer.

Want to take a nice 5 gpm shower? No, you need to let almond farmers drain the river before it gets to the ocean so everybody can have almond milk. Stay in there twice as long buddy, don't know what to tell you.

Yes there are a bunch of terrible ideas in this thread. Video camera controlled lights? Yes f privacy of everyone to save a few bucks? well I think that was sarcastic

Motion controlled lights are always timed badly, incredibly annoying to have them switch off when you are sitting still working or taking a duece.

How about the janitor shuts off the lights after everyone goes home?

Can we please ban university press releases

Statecharts are one of the those concepts that are extremely useful for machine control that it seems crazy to me that they are so little adopted from what I have seen. At most people might know about a flat mealy state machine.

What's better than graphically designing your HSM, simulating it vs all kinds of scenarios to verify it, and auto generating the code?

There were so many things that NI did that were great. Debugging in LabVIEW was also very easy with probes, conditional breakpoints etc.

It's really too bad that it's more or less dead now

I am sure they each personally researched the topic very thoroughly to come to this conclusion

You're right but still, big error. I get its averaging over the range, and the floats are not uniformly distributed.

Maybe the thing to optimize the expression for is the minimize the maximum error, and not the average error. I think that's what I would care about

You're right I misread the graph. That said though I have played around with Herbie before, trying it out on a few of the more gnarly expressions I had in my code (analytical partial derivatives if equations of motion if launch vehicle in rotating spherical frame) and didn't see much appreciable improvement over the expected range of values, but then again I didn't check every single one.

What would be cool is if you could some how have this kind of analysis done automatically for your whole program where it finds the needle in the haystack expression that can be improved, assuming you gave expected ranges for your variables

The rocket company I worked at designed their orbital rocket in inches and lbm. Engine flow rates in lbm/s, temperatures in deg Rankine, thrust in lbf. Btu/hour/inch^2/degR heat transfer coefficients.

I miss fuckedcompany.com