本帖最后由 GJM 于 2009-12-5 21:43 编辑 + Z: j* \+ U9 d' ^4 Z
6 p5 N( M1 f6 v: [底下是小弟做AutoMOD里面PDF练习的(Exercise 5.9)逻辑文件但问题是,程序只Run到Machine A和Machine B就没继续下去# j- w: ~" ~* D6 O( D% C; ]
) y' ~8 ^: Q) S9 ?% R9 h不知道是哪里出错,另外这题和Exercise7.1的题型类似,请问若要符合Exercise7.1的题意又该如何修改呢?请各位先进指导,谢谢!
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* G2 b4 L; I1 a1 C--------------------------------------------
5 R o4 {5 f0 ~! R6 a; U+ n2 o) vbegin P_something arriving
/ v; j0 j# q T" B move into Q_wait
* R7 b7 F5 Q) f/ |0 Y move into nextof(Q_mA,Q_mB,Q_mC)
/ O- l3 ^/ |' x W use nextof(R_mA,R_mB,R_mC) for normal 48, 5 min7 d' y& }9 n2 T+ b% ^$ I4 [
send to nextof(P_mA_down,P_mB_down,P_mC_down,P_mA_clean,P_mB_clean,P_mC_clean)! s3 {% X# |1 T$ U# P
send to die! t, ~8 f% E& `: ~& x) o
end5 {0 {0 a* D9 t' c
1 K: C& r. h0 [/ u
begin P_mA_down arriving4 b( `2 B# r" J5 K2 I7 r7 V
while 1=1 do ' F0 z$ b7 ?6 y, D
begin
1 Z r; a, K. T `4 j. C wait for e 110 min/ u4 x+ \2 b h$ t# h3 Z6 r
take down R_mA
' |4 x9 b1 Q) c& P wait for e 5 min. {% U( V5 y7 c- U# T- {9 X
bring up R_mA
* G7 O; x% d1 x- k! O A) [0 R end* O/ S) P$ [1 R( D. Q
end' l7 w" r( a8 a. q5 a0 Z" G
( X- @8 P& e! n4 U# G2 `" v9 bbegin P_mB_down arriving& \. I8 u; `- z+ F0 Q( {3 z
while 1=1 do
$ C( c5 C( j" \" }% s% [ begin
1 e* K; y+ u( ^. u0 e, H) n wait for e 170 min
3 v7 a' c5 T( f. H: G take down R_mB' ]9 ?6 I; B# h
wait for e 10 min0 }5 S4 h) P3 s3 K9 d8 Y
bring up R_mB
' ^2 M# {$ e& d% d end
" P; [$ P! Y2 H' T$ F wend
" |6 d% x/ @: h; j0 J8 ^2 D- p ' a/ C; Z- s' |3 z6 {' d( X
begin P_mC_down arriving
u/ G; _% t( w; w8 a! A while 1=1 do
7 A, E- ^% F6 P begin; n/ d( c$ ]5 t6 w, |( Z3 v
wait for e 230 min) ^+ o, c" g9 w* X* I" D
take down R_mC( v3 @8 X1 B: W5 [
wait for e 10 min
0 W9 Y4 d+ [8 K. P bring up R_mC ~7 D1 `. N0 |4 z. q6 C7 G
end: `* @ v( m4 o+ ~6 ~! \6 v% e: h
end- z. J" R4 \) p% I' L% g6 ]) Y
" z" r y& G: i. Qbegin P_mA_clean arriving, z$ @% f Y5 \2 O. C
while 1=1 do
- \+ {7 s( z# q begin }7 k8 z' b; _+ u. d7 ?) Y9 k
wait for 90 min: C8 s# n6 `3 a
take down R_mA
# t, y2 T! N3 V" @2 O: C wait for 5 min
! ^! Q- U" R7 L. ~! W+ X bring up R_mA/ L5 O" v9 ]! o& M2 M' x7 w
end
2 @ h" C* S. e+ I0 [- z) ?end
, i0 u/ z+ \- A& y8 P3 c* W# v
: O0 A1 n i; b+ X4 nbegin P_mB_clean arriving
$ s9 R$ ]& w7 l4 i while 1=1 do
6 V) h# O! [8 y& a begin
3 ]6 `0 Z: U' `6 y& R" t! t! x. _" D1 H wait for 90 min, Y/ N0 x, F4 r6 J1 U
take down R_mB: B, I _; Y: v6 y0 {* h+ {
wait for 5 min
1 p0 K7 m- ~; r8 v bring up R_mB3 G8 A/ L0 k; m5 `; N
end
7 A7 h/ O4 y! o; C8 x' [. gend
8 t1 ^8 h, L5 l7 I- v8 K+ Z& C; n! f
) D% s) [" A3 a G0 Xbegin P_mC_clean arriving5 q; Q P! u: @% S" C0 S
while 1=1 do
6 n' G4 L/ B. m" x" x& X% y begin
8 k& q/ a3 A; X+ w8 X wait for 90 min5 A2 z; Y6 K3 n! v( y
take down R_mC
& V$ _- _- h. b wait for 10 min+ [; H- t4 b- [" T3 o) ]. c
bring up R_mC
% M/ _$ G7 Q+ K% |# I end7 e+ M) z9 [- q! O7 }
end# r" Z. f7 d* J: {+ Y+ w
----------------------------------------
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Exercise 5.9+ L; e! l: X8 l6 K! y4 V# @3 f
" {: u" L. Z6 g* @9 g
# q0 D! E4 [8 z2 r7 ]% kCreate a new model to simulate the following system:
6 z g, j1 N" rLoads are created with an interarrival time that is exponentially
% d, g) D! J' ^( R5 v' f! ndistributed with a mean of 20 minutes. Loads wait in an infinite-
& ]# j8 k# w$ S: Ocapacity queue to be processed by one of three single-capacity, . r) g1 q' Z$ f! j
arrayed machines. Each machine has its own single-capacity queue
l. m$ ~5 \- n5 h! o# rwhere loads are processed. Waiting loads move into one of the three
7 j. G6 d, G8 W$ G4 M! l$ `; O# _queues in round-robin order. Each machine has a normally
. |. C' f5 Z2 D/ Ydistributed processing time with a mean of 48 minutes and a standard 0 s5 W) y- n1 m" a6 s7 _7 s* t) k
deviation of 5 minutes." h: A( f& o4 Z" j* Y/ q
The three machines were purchased at different times and have
4 A% l# V' f! c9 P) m: L0 ndifferent failure rates. The failure and repair times are exponentially & ~+ G$ L8 U, H }
distributed with means as shown in the following table: , v, f' \! z/ b8 N
Note The solution for this assignment is required to complete
% V# L+ k' V: Kexercise 7.1 (see “Exercise 7.1” on page263); be sure to save a copy of
. ~- X) K% s1 \$ g# z" uyour model.
$ D& i- d0 w9 T V1 }) e: e, t b1 x) ~$ U0 N/ k6 U$ J
MachineMean time to failMean time to repair
* N: Q4 D% R$ P+ F! r% oA110 minutes 5 minutes( u8 Q& w" T; [6 m
B 170 minutes 10 minutes
: y3 z$ d' Y) LC230 minutes 10 minutes
E0 I4 B+ H% W1 H+ b$ `5 {: J( [! _9 Q) O2 P. ]' O
The machines also must be cleaned according to the following
8 h8 c1 a( r C! ^- tschedule. All times are constant: ! y" h$ p/ O( T/ \& A6 {9 o3 \7 f) n
, f' a8 F/ K' D* {! M4 Z5 ^+ @
MachineTime between cleanings Time to clean6 x; r" G6 ~. v U. a
A90 minutes 5 minutes
! A! T9 G d7 j0 e' wB 90 minutes 5 minutes
8 W- D% M' i% {" q' H$ C+ jC90 minutes 10 minutes6 C5 @% i A2 Y: H
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Place the graphics for the queues and the resources. 8 @. x+ T& y% A6 s" T$ |9 U
Run the simulation for 100 days.
" ^. q/ Z" H+ p8 X3 {( SDefine all failure and cleaning times using logic (rather than resource
6 M3 d8 [( K' E7 i) m! o4 [( Fcycles). Answer the following questions:
" e1 z1 Z1 d2 T9 C& Ja.What was the average number of loads in the waiting queue?3 f; K; ]2 V% N/ I
b.What were the current and average number of loads in Space? 1 C! o9 w! U% w! d$ P8 u/ e
How do you explain these values? 2 I& ]: R% u( o& s, g" g
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