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The current group of characters is interpreted as a name beginning with character other than a letter. The first character of a name must be a letter."2 B2 U8 X4 F4 _( M* O4 W
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程序如下:
. h5 T3 d% f T/ KMODEL 1/ p, k! H3 v N
CONST Tmax (VAL:500) , Q; n, @& C9 ]) {
Im (VAL:30.e3)
# k1 E {9 p( B: [6 D( AT1 (VAL:2.e-6) 4 x! V' H/ Z! N( C
T2 (VAL:50.e-6)
9 a: d5 I6 e" h! wm (VAL:5) ' M: m' k6 x9 A8 r, x
c (VAL:3.e8)
# m) m4 z1 A. B+ ?) A9 Dv (VAL:1.1e8) . ^) Y" w2 f0 r: K; U5 c# S y+ p
Io (VAL:1)
6 {' i4 H) W- h: dz (VAL:6)
: |( E/ T& R* b, Q$ I [INPUT UAP,UBP,UAN,UBN 9 o8 @0 n3 M0 n- `! F
DATA Y,XA,XB ( |9 A1 ^, o. {. h
OUTPUT UrAP,UrBP,UrAN,UrBN 1 @6 P t1 w# k
VAR UindA[0..1000],UindB[0..1000],dI[0..1000],
' S& f/ @8 C+ l1 _5 {/ iTr,Ti,I,e,dt,UrAP,UrBP,UrAN,UrBN,
3 O2 h" q. h8 U8 Tta,tb,b,n,L,x,Ko,Ui,Tj
5 P# o6 Q4 c b) f* W4 D' n) Y1 \FUNCTION SQR(x):=x*x& z8 B \6 O G U# e" `
FUNCTION F(x,tr):=(x+b*b*(c*tr-x))/sqrt(sqr(v*tr)+(1-b*b)*(x*x+y*y))# t# P* ~( P4 L' U9 p
FUNCTION U0(x,tr):=60*Io*z*b*(c*tr-x)/(y*y+sqr(b*(c*tr-x)))0 l' x7 J9 x4 ? a6 ~/ r2 |3 e0 \
HISTORY. ~5 n7 c. h& N# K e
UrAP (dflt:0), UrBP (dflt:0)
2 H, r( K9 E" u) ?' G: ^UrAN (dflt:0), UrBN (dflt:0)
2 A) d% y6 @" |' h2 fUAP (dflt:0), UBP (dflt:0)
# Q( H3 o7 f9 @3 u- VUAN (dflt:0), UBN (dflt:0)
, X% U% L& e6 f2 d5 PINIT, i( y$ c; J" h' s7 l
dt:= timestep
/ t% H; m. O, ]/ Y$ A; r8 r4 Jb:=v/c" g' q8 U/ n5 t% o( V1 {
L:=XA-XB
, V( _4 b4 k `# I' hFOR Tj:=1 TO 2 DO
( k3 L% r* v% Q* Pif Tj=1 then
% S* ]/ f4 q7 Q |x:=XA 2 M' o9 Z6 e* D, H& Q
else
9 m, L' }3 O7 K0 Wx:=-XB
4 ]( l; P9 A9 ^) F* ?0 dend if
( @7 E4 Z8 |% Z5 H; Eta:=sqrt(x*x+y*y)/c
6 @9 a% l D8 ]; atb:=sqrt(sqr(x-L)+y*y)/c
) G9 P/ i! f1 O0 D9 `& J# j- hFOR Ti:=0 TO Tmax DO2 ?$ G9 m$ y' j& C0 D/ g# z3 k3 C
Tr:=Ti*dt3 R, ^8 Q7 W( z
if Tr>ta! A" m7 n5 V2 X6 U) l; a8 k' q7 a
then$ V! [2 o$ J* Q7 Z
if Tr>tb+L/c/ ^1 b1 i: A, ^6 i4 a! t
then
, U2 H) r! B6 x" @! `6 V$ IUi:=U0(x,Tr)*(f(x,Tr)-f(x-L,Tr-L/c))0 s! o0 a' d$ e7 v0 z" @/ }
else
0 f4 d$ `. b4 G" X( |Ui:=U0(x,Tr)*(f(x,Tr)+1)" t% Y; k# v1 @+ q+ _
end if5 T3 K: a1 k8 g9 x _
else
3 p# U' e3 P) P6 H( G* }9 iUi:=0
: }/ H5 S* _9 F- Y% hend if& ~+ v. F! g u Q1 i2 j
if Tj=1 then& e. s( k$ ?5 q! T, f
UindA[Ti]:=Ui else
7 n* j8 F/ h7 ]0 k8 ~6 ?8 oUindB[Ti]:=Ui
" F' }0 {3 n5 d+ Dendif
& Z7 X7 W! @; Z. c5 t. _) nEND FOR( ]' \4 P; k1 _( l! Y+ G$ _* z
END FOR
+ D" O$ r6 E8 A0 Y6 xFOR Ti:=0 TO Tmax DO 3 t& m! [4 `) ]) n5 l# H
Tr:=Ti*dt
3 D, N. K& x- j2 LIF (Ti=0) THEN dI[0]:=0
; m" B; ]9 A zELSE
1 `' ^$ f- v2 U0 v! J' D" H* Re:=exp(-(T1/T2)*exp(ln(m*T2/T1)/m))
: f V6 d0 o% X8 `5 u9 EI:=Im/e*exp(m*ln(Tr/T1))/(exp(m*ln(Tr/T1))+1)*exp(-Tr/T2)
- P* T) o8 r/ o1 ]5 ~dI[Ti]:=I*((m/Tr)/(exp(m*ln(Tr/T1))+1)-1/T2)
- V& w. x2 N+ N' ~END IF
# t6 \5 X, c4 k" q9 Q4 N; T- AEND FOR$ w- j2 V* Q2 _4 s$ b1 P6 Y) Q
Ti:=Tmax
1 u: g8 g5 Z1 C& U% _. A7 c$ Y0 BWHILE Ti>1 DO
' X/ H/ t1 @$ M# D8 YFOR Tr:=1 TO Ti-1 DO
- s5 W5 M A( E8 v$ }# vUindA[Ti]:=UindA[Ti]+UindA[Tr]*dI[Ti-Tr]*dt. S& k& w" d, k& d7 A' H: m
UindB[Ti]:=UindB[Ti]+- x) p8 o# y) E% A% M4 i# @
UindB[Tr]*dI[Ti-Tr]*dt
& w/ j* A6 }3 h9 nENDFOR
l# f5 d- c/ ^4 C' i7 E- YTi:=Ti-1
$ ^ L- R( S0 e$ m1 |END WHILE
) }" ?% T" d, c- w4 a
. |% w2 J9 l& Z0 @3 ?Tr:=L/c' P3 N% q: ^; n: O) V7 [
END INIT7 J2 ^( h- v$ o2 O' L& q/ X6 D
EXEC1 @4 l' @- A9 S7 W" U! H. s% G: A" E
UrAP:=UindA[t/dt]+2*delay(UBP,Tr-dt,1)-delay(UrBP,Tr,1)
4 o( D; S* I* V4 H- O* c( fUrAN:=UindA[t/dt]+2*delay(UBN,Tr-dt,1)-delay(UrBN,Tr,1)
3 O3 ?) u( w: o. \9 m( c9 n. ?0 d( MUrBP:=UindB[t/dt]+2*delay(UAP,Tr-dt,1)-delay(UrAP,Tr,1)6 ^2 C, Y9 ~- `- i2 m$ q2 z
UrBN:=UindB[t/dt]+2*delay(UAN,Tr-dt,1)-delay(UrAN,Tr,1)+ G3 Q4 E/ f2 `, w. F' b+ f2 ?
END EXEC9 A7 o, O7 i7 n: K
END MODEL: ]% S( r1 @! r9 n# v! l
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