The idea that there is such a thing as analogue computation is a classic oxymoron. The logic of the digital is computation and vice versa. (Now let's see how quickly this thread devolves.)
-
-
Replying to @NegarestaniReza
okay, so what is an analogue PID controller doing then, exactly, if not computing differentials and integrals?
1 reply 0 retweets 3 likes -
Replying to @jancorazza
That's the problem. You are already modeling the said controller on digital computation.
2 replies 0 retweets 3 likes -
Replying to @NegarestaniReza
I don't see how that is, though? there's nothing "digital" about differentiation or integration, they're both just limits. just like e is a limit and not its digital representation, and can be computed digitally _or_ analoguely
2 replies 0 retweets 2 likes -
Replying to @jancorazza
You seem to confuse between two things, math modeling and computational modeling. Math modeling is not computation in any meaningful sense.
3 replies 0 retweets 2 likes -
Replying to @NegarestaniReza
then I don't understand what "You are already modeling the said controller on digital computation" meant
1 reply 0 retweets 0 likes -
Replying to @jancorazza
You said the controller is doing computation, I said no it is not doing computation until you model it based on digital computation effectivity. Mathematical modeling of flow exchange is not computation.
1 reply 0 retweets 0 likes -
Replying to @NegarestaniReza
"until you model it based on digital computation effectivity" but do you actually do that? I'm pretty sure they're modelled as DEs by electrical engineers and not as algorithms by computer scientists. strictly speaking their activities don't fall under the def. of computation
2 replies 0 retweets 0 likes -
Replying to @jancorazza
Logical gates as engineers use them are fundamentally digital to begin with. You can get some fuzzy variations but you can account for it through weak effectiveness.
1 reply 0 retweets 0 likes -
Replying to @NegarestaniReza
hmm disagreed here. I'm looking it up now and it seems my assumption was correct, P is implemented by a simple voltage divider amp, and I and D through the use of capacitors, a process that would be a stretch to call digital
1 reply 0 retweets 0 likes
These are fuzzy variables which go into every form of modeling. Digital computation can take care of them by introducing either something like paraconsistent logic, by weakening the criteria of effectivity or by moving toward a truly concurrent logic of computation.
-
-
Replying to @NegarestaniReza @jancorazza
The works of Japardize and Blass are indispensable when it comes to such issues.
1 reply 0 retweets 0 likes -
This Tweet is unavailable.
New conversation -
-
-
Replying to @NegarestaniReza
hmm okay, I don't know much about this stuff
1 reply 0 retweets 0 likes -
Replying to @jancorazza
Research on true concurrency is a great point of entry.
0 replies 0 retweets 0 likes
End of conversation
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.