Re: [Help] Control Theory

[tuan@hosoe.nuem.nagoya-u.ac.jp]

Hi chi. Thu.c Anh:

>Ho^m truoc nho+` co' 2 Mail nha^`m ddi.a chi? cu?a hai anh Tua^'n ne^n dduoc 
>bie^'t trong VNSA co' mo^.t anh Tua^'n chuye^n ve^` ly' thuye^'t die^`u 
>khie^?n 
>nhu+ng kho^ng may to^i la.i xo'a ma^'t ne^n kho^ng bie^'t chi'nh xa'c anh 
>Tua^'n na`o. Va^.y xin nho+` cac anh chi. kha'c xo'a giu`m message na`y. Nho+` >anh Tua^'n va` ca'c anh trong la`ng ddie^`u khie^?n ne^'u bie^'t vui lo`ng 
>gio+'i thie^.u ( in English)  giu`m mo^.t so^' model trong Adaptive Control 
>System:
>  - AR Model ( Auto Regressive Model)
>   - ARMA Model ( Auto Regressive Moving Average)
>   - AIC ( Akaike's Informatin Criteria)

Hi`nh nhu+ ddo' la` mails giu+~a tui va` a. Tua^'n (NSW). Ca'm o+n chi. dda~ 
xo'a 2 mails ddo', cu~ng tha^.t may ma('n cho chu'ng tui.

>       Co' i't nha^'t la` 6-7 Tua^'n trong list na`y, ne^n de^~ la^`m
>la('m. To^i la` Nguye^~n V Tua^'n (U'c) dda^y. To^i cu~ng bie^'t mo^.t hai
>ddie^`u ve^` AR, ARIMA va` AIC nhu+ng thua^`n tu'y trong statistics tho^i,
>chu+' kho^ng trong control theory. Ne^'u chi. muo^'n bie^'t ly' thuye^'t
>thi` to^i sa(~n sa`ng chi? sa'ch cho chi. ti`m.

a. Tua'n (NSW) chi'nh la`  Nguye^~n V Tua^'n (U'c) dda^'y, co`n tui la`
Hoa`ng D Tua'n (Nhu+.t ba?n). Tui cu~ng bie^'t ddo^i chu't ve^` ly' thuye^'t
ddie^`u khie^?n (control theory). Ma` co' ho^?ng bie^'t thi` tui ra^'t co' y'
thu+'c ddi ti`m hie^?u khi ddu+o+.c phu. nu+~ tre? ho?i.
Va^.y thi` chi. chi? quan ta^m dde^'n models hay quan ta^m dde^'n control nu+~a.
Trong adaptive control system thi` thu+o+`ng co' parameters/constants kho^ng
bie^'t ddu+o+.c gia' tri. chi'nh xa'c hoa(.c chi? bie^'t ddo' la` constant,
vi` va^.y pha?i gia? su+? constant do' co' the^? mo.i gia' tri. tu+` du+o+ng
vo^ cu`ng dde^'n a^m vo^ cu`ng (cu~ng nhu+ ti'nh ti`nh phu. nu+~ tu+` di.u
da`ng qua' dde^'n kho^ng chi.u no^?i va^.y).Vi`the^' the goal cu?a adaptive
control la` design feedback control sao cho system co behaviour theo ddu'ng
y' ta vo+'i mo.i gia' tri. cu?a constants ddo?ng dda?nh kia. Kho^ng co' ddi.nh
nghi~a chi'nh xa'c what is an adaptive control, ne^n co' ngu+o+`i ra^'t no^?i
tie^'ng dda~ ddi.nh nghi~a la` "An adaptive control is a control considered
from adaptive point of view".

Any way, tui nghi~ a. Tua^'n (NSW) co' the^? giu'p chi. ddu+o+.c nhie^`u trong
va^'n dde^` na`y. Ne^'u chi. va^~n kho^ng tho?a ma~n thi` tha'ng 7-8 to+'i tui
se~ ga(.p tru+.c tie^'p a. Tua^'n (NSW) va` chu'ng tui se~ cu`ng ho+.p ta'c 
dde^? giu'p ddo+~ chi. Giu'p ddo+~ chi. la` me^.nh le^.nh cu?a tra'i tim va`
tri' tue^. chu'ng tui.
Ti`nh ....
T.