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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."
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程序如下:9 s. a/ s" \6 I. n- \: V; C9 r
MODEL 1# E+ l5 q, a. v! _5 v# k
CONST Tmax (VAL:500)
4 U8 z8 M! ]: e7 g# \: M. Y- UIm (VAL:30.e3)
' e' u* @* [7 J* }; s8 b% sT1 (VAL:2.e-6) % U b' d, j& D2 Q. B1 I) _
T2 (VAL:50.e-6) % L6 q4 T t& h/ R# t
m (VAL:5)
9 w, \/ Z% w8 M/ @3 lc (VAL:3.e8) ) v9 A. e5 P& a* c( j1 d
v (VAL:1.1e8) * i3 ]3 f( k- X: Y
Io (VAL:1)
e1 v3 C% O/ g0 q& K+ q* Uz (VAL:6) ; ?( r* w* [ j) H( O" L I* P0 l
INPUT UAP,UBP,UAN,UBN
( \# T5 M7 m" N! v8 yDATA Y,XA,XB 8 j6 |* h2 K: V1 R7 Q% R
OUTPUT UrAP,UrBP,UrAN,UrBN
! s2 v+ C+ f- s0 TVAR UindA[0..1000],UindB[0..1000],dI[0..1000],
1 l; C7 o$ w8 T/ L- x! STr,Ti,I,e,dt,UrAP,UrBP,UrAN,UrBN,! j2 }$ L- m: z1 H/ C6 ^1 j+ \
ta,tb,b,n,L,x,Ko,Ui,Tj, E6 s0 ^ Q2 Y0 I8 O2 K: Z
FUNCTION SQR(x):=x*x% z9 ]' N4 E! }) Q
FUNCTION F(x,tr):=(x+b*b*(c*tr-x))/sqrt(sqr(v*tr)+(1-b*b)*(x*x+y*y))
2 B1 S- m5 V. Q* o9 W4 ~5 t$ MFUNCTION U0(x,tr):=60*Io*z*b*(c*tr-x)/(y*y+sqr(b*(c*tr-x)))
7 x# z5 @: x0 Y0 oHISTORY: l0 t o4 `2 @: T9 y1 c
UrAP (dflt:0), UrBP (dflt:0)6 J4 }6 n* d5 v5 j- U
UrAN (dflt:0), UrBN (dflt:0)
7 s( I$ V3 h8 ?6 R) sUAP (dflt:0), UBP (dflt:0)1 e( `# C2 `) U+ _
UAN (dflt:0), UBN (dflt:0)
: \. v1 l5 S6 GINIT4 z% x9 Z' ?% U! H5 b! ~- r
dt:= timestep6 ]3 `0 l$ ?: ?% m: Y* n
b:=v/c
9 W7 v Y4 t$ a( h- r; O. ?L:=XA-XB
4 w5 q: H1 U; `. ?7 M6 E: q0 c% DFOR Tj:=1 TO 2 DO
/ g1 e- v) L5 a: uif Tj=1 then& A2 z$ ]. C/ _- z6 O' a
x:=XA
6 X* Z$ @$ r& t$ u' ], y$ }else& m( C/ i" Z8 O! Y
x:=-XB; L# y1 E6 F7 @7 i* u7 L
end if
4 { ]# @- e8 ]ta:=sqrt(x*x+y*y)/c
; a; F& y7 q$ G/ Dtb:=sqrt(sqr(x-L)+y*y)/c3 r7 |- ?8 e7 r
FOR Ti:=0 TO Tmax DO2 \- }8 [, L+ B- ?
Tr:=Ti*dt
! `5 P0 P* K) Z: `if Tr>ta
. W0 r4 T/ K$ ?/ }7 K* C5 R( Dthen2 {! P" n! N) \3 e9 C) |1 N7 u
if Tr>tb+L/c$ ?0 T/ m( K, D X% u8 d
then' e3 |4 G4 p1 O3 g; U: e5 p( s
Ui:=U0(x,Tr)*(f(x,Tr)-f(x-L,Tr-L/c))
~4 N) I& X7 I6 f: [) Yelse
, h$ `, F* s0 j- a4 XUi:=U0(x,Tr)*(f(x,Tr)+1)- t7 b$ ^) M3 G% ~: a
end if3 \' _; W& U/ u% Z' Y' ]! J
else7 |1 Z) x/ F, v' S& @* ~, s9 T
Ui:=0
2 r1 w+ ?5 S1 B2 R e7 ~% ]2 nend if! P7 R# Z' C B, b, e1 t! s
if Tj=1 then1 u0 B+ ~" p7 W. @) U' K4 z
UindA[Ti]:=Ui else
! D: C9 t# j1 y0 G' y$ Y3 c" PUindB[Ti]:=Ui: N" i$ n: c& _6 x
endif* U7 V5 L$ l3 ~
END FOR6 y9 w$ a% @& O+ H& V. u* o
END FOR
% o" N1 l6 U4 ]7 F8 b6 H3 }; O$ OFOR Ti:=0 TO Tmax DO
& D, w3 w" K* A0 y f& [) r% rTr:=Ti*dt! j* e. j6 T% Y4 ]0 w! P# h
IF (Ti=0) THEN dI[0]:=0
" d: ^: z; D( |* h; t- oELSE
, ^8 h6 [% ?* Me:=exp(-(T1/T2)*exp(ln(m*T2/T1)/m))3 G" z" D' ^( r }3 F$ u
I:=Im/e*exp(m*ln(Tr/T1))/(exp(m*ln(Tr/T1))+1)*exp(-Tr/T2)
! a$ q) N, Y0 p, a7 xdI[Ti]:=I*((m/Tr)/(exp(m*ln(Tr/T1))+1)-1/T2)
& C5 s' R$ |& ?/ w5 rEND IF/ O6 |9 S' W+ k+ w% D
END FOR. k. s' N" e) r, L$ p, [* Q
Ti:=Tmax2 x, T) h. W5 n+ R7 P. Q* e
WHILE Ti>1 DO |$ @5 O1 U1 s: f4 q: }# o% j
FOR Tr:=1 TO Ti-1 DO R6 g/ X& ?' Z' v$ I$ O
UindA[Ti]:=UindA[Ti]+UindA[Tr]*dI[Ti-Tr]*dt/ {9 x) T Y9 T! K5 O4 x
UindB[Ti]:=UindB[Ti]+$ ~ K' i4 w& c: o- h, O" `/ f' [
UindB[Tr]*dI[Ti-Tr]*dt3 }8 R/ s `1 J3 }
ENDFOR; P/ l4 p, }' [1 q
Ti:=Ti-1
7 Y% S$ W! R2 k3 W$ v" gEND WHILE) h* l7 @% s( ^# Z# j$ |6 t
8 _: k7 O5 N4 }* d8 F
Tr:=L/c
8 x" n6 B- n7 p# H( DEND INIT1 A* }1 |7 [/ B ]6 b7 U* _' v
EXEC
4 f4 u- z! F9 T8 s! G' sUrAP:=UindA[t/dt]+2*delay(UBP,Tr-dt,1)-delay(UrBP,Tr,1)
! k% Z7 K- k+ @/ ^UrAN:=UindA[t/dt]+2*delay(UBN,Tr-dt,1)-delay(UrBN,Tr,1)
/ k1 F2 d) e0 c$ QUrBP:=UindB[t/dt]+2*delay(UAP,Tr-dt,1)-delay(UrAP,Tr,1)
2 l5 c' G: g: D. M: M! E% vUrBN:=UindB[t/dt]+2*delay(UAN,Tr-dt,1)-delay(UrAN,Tr,1)
4 r) S& q g7 H! h5 P0 H, aEND EXEC
0 |4 Y6 Z5 \- d: T" ~) q9 fEND MODEL
8 p# z9 t, Q/ {& w" M2 O8 G2 \! @3 {1 e: @
0 Z* t/ s; B+ r
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