Re: Tha('c ma('c: Fuzzy logic

[Tuan Pham <tuan.pham@unsw.edu.au>]

Hong Lam Vu <vuh000@goofy.zdv.Uni-Mainz.de> wrote
	
>toi lai co' tha('c ma('c nu+~a ve^` fuzzy logic:
>
>fuzzy control kha'c vo+'i analogous control o+? die^?m na`o?
>Bo+?i analogous control cu~ng kho^ng die^`u khie^?n theo
>nguye^n ta('c digital 0/1.
>

Hi La^m and all

Có le~ khác là fuzzy control dduo+.c invented bo+?i 1 marketing
department co`n analogue control bo+?i 1 engineer! Su+. thu+.c
(IMO) fuzzy control ra^'t tho^ so+ vi` no' co`n chu+a co' ddu+o+.c
nhu+~ng features cu?a analog (PID) control nhu+ integral action          
(nhi`n ve^` qua' khu+') va` derivative action (nhi`n ve^` 
tu+o+ng lai), ma` chi? bie^'t co' hie^.n ta.i.

CA'ch dda^y va`i na(m to^i a'p du.ng PID control nhu+ng du`ng
1 ca'i on-off switch (nghia~ la` digital actuator) nhu+ sau.
Generate random number (between 0 and 1) at fixed time 
intervals. If number is less than PID controller output
(on a  to 1 scale), switch on. Otherwise switch off. 
Nhu+ va^.y co' pha?i la` fuzzy control kho^ng nhi?
At any rate it controlled beautifully a piece of experimental
apparatus!

Hey, I know I'm not supposed to talk about politics but that
may be the way that (some) governments make "policies" -
you know, one step to the right, two to the left... Shall
we call that "fuzzy logic" or "fuzzy politics"?  ;)

Cheers
Tuan Pham