本帖最后由 GJM 于 2009-12-5 21:43 编辑 # B6 |7 a/ q( `: c: R# O
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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
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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!) {6 a1 J' s3 Y7 y( D
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begin P_something arriving
! r+ m# V6 m4 ^6 W% Q( J move into Q_wait0 {* f, L; u% |7 k# I, v) Y7 L7 _- Y
move into nextof(Q_mA,Q_mB,Q_mC)' `/ b$ L H' v; o4 s
use nextof(R_mA,R_mB,R_mC) for normal 48, 5 min
& X4 A O4 a I/ z! W send to nextof(P_mA_down,P_mB_down,P_mC_down,P_mA_clean,P_mB_clean,P_mC_clean); b7 T2 ?) q' M% Q' Z' m' n
send to die
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begin P_mA_down arriving/ v, V, r& K- ?' K5 x* `
while 1=1 do 3 d) @6 [/ _. K) }4 C6 j3 }' @
begin, Q8 D1 k, w& d) V7 K
wait for e 110 min
/ x6 V R9 m3 F) O" w take down R_mA
& m8 Z# S! t0 M6 N |5 B" h, U wait for e 5 min7 F- b( |; H1 k4 K
bring up R_mA, n" l" H P9 R* o9 X+ i% e
end& P: L r% T/ q
end
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2 {* i* a k$ }7 w$ u! }1 vbegin P_mB_down arriving
" C6 }. p& }- O; E* [% |) i while 1=1 do( I( I$ m6 T7 C( W3 H5 u
begin2 p3 {" m9 q. j) ~) B
wait for e 170 min8 d5 l% G$ h& y) N( z
take down R_mB7 r' k, @8 m, l! X, V9 v+ x9 s
wait for e 10 min, Y7 l3 e- T" l+ K% G, _, N
bring up R_mB
9 i; f) J% d$ J% s end
2 R4 S# B {4 s7 @2 @7 b* zend
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begin P_mC_down arriving, l& W& S/ E! z. X9 I/ U) J
while 1=1 do
?; ], |+ z, k* Y% M( o; M begin. r6 N# m) r" B$ A
wait for e 230 min- G6 r, A- g' e
take down R_mC' o2 a. }/ e+ O* m% h5 m
wait for e 10 min, N. ?, T& q- p6 u1 j1 p" R
bring up R_mC9 I" J9 F: R# L- c( ?/ E+ b2 n
end
- R; Y" G2 F% z# k4 kend, c0 [% l: F, D$ l" D0 B
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begin P_mA_clean arriving
. b4 f W6 U; M# e! d while 1=1 do
" n0 L& ^2 {* T; ]1 G begin
8 f$ ]0 t: @7 r1 Q4 V, R6 P% Y1 T wait for 90 min. H. e% Z# d l; C$ }, n* Y; s+ f& E
take down R_mA
+ H4 N h0 T: Z7 M+ H, q wait for 5 min
* d$ U. S$ {% g bring up R_mA/ m# ]. f* k* t. Z: P0 L
end- v5 }3 `2 j( H
end
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begin P_mB_clean arriving% } Q6 I1 ]7 g) |) s/ }- Y
while 1=1 do5 }3 S# F2 Z9 x" J) K2 }
begin
8 N6 v. d$ i& H! y" _ wait for 90 min
2 o, o4 g% v! f7 y( Z7 E% @, L take down R_mB
0 a& T! L+ q- W wait for 5 min3 f! f! |6 L5 K& Q0 i5 ~
bring up R_mB
6 D" N3 I! ^3 Y end/ ]# w! S$ i0 E9 g0 H
end! T0 Q9 o# ` m T% \9 S, Q
/ [6 E& f; a) e1 l: j6 kbegin P_mC_clean arriving2 K1 [ `( L, S) B( ^
while 1=1 do
; |' Z' f' e3 x/ I2 \ begin
' d$ Y) C' s$ I) l5 j2 I wait for 90 min8 j; {6 M" X0 I9 U
take down R_mC
/ N, v2 _6 G& ? wait for 10 min& @* t, s, G7 K+ g4 T
bring up R_mC
; n$ b9 y" `6 f! S7 a y' ^' [* S end9 ~: R8 [' f$ } q9 H
end
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3 n9 S2 J6 q/ `7 S" @Exercise 5.9
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' W2 H. c$ _# [# g1 r) ZCreate a new model to simulate the following system:8 L9 o2 n$ ?, h# L
Loads are created with an interarrival time that is exponentially ' I5 V6 p4 h/ P
distributed with a mean of 20 minutes. Loads wait in an infinite-
6 c" Z- F6 h" L" h4 h# ]! `, Qcapacity queue to be processed by one of three single-capacity,
3 W) t t/ }9 u" s' h5 _/ Varrayed machines. Each machine has its own single-capacity queue
2 E4 p% N' d! T' {+ G0 i# }( Zwhere loads are processed. Waiting loads move into one of the three
; _# E1 S3 w5 h. pqueues in round-robin order. Each machine has a normally
) Q1 x' K# h/ |distributed processing time with a mean of 48 minutes and a standard ^4 i6 F* C, A) P
deviation of 5 minutes.
: o/ j% w! E* @0 R" m, MThe three machines were purchased at different times and have 7 G* v3 Q7 {. p5 C! |
different failure rates. The failure and repair times are exponentially + J" z9 J8 X: e3 a( r# M# n
distributed with means as shown in the following table:
( _& \" _% C' N9 m: j8 L# o4 J1 L& zNote The solution for this assignment is required to complete
0 p8 \4 b& e! K' Cexercise 7.1 (see “Exercise 7.1” on page263); be sure to save a copy of
3 o: o% z* b' A( B9 W! K9 }5 i' `your model.
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: _1 O' R; z Q, YMachineMean time to failMean time to repair
7 f- Q3 d; F. I) \! y$ X$ @A110 minutes 5 minutes
" C' ~0 r7 Z( lB 170 minutes 10 minutes4 v' {1 q& E9 |/ S" a
C230 minutes 10 minutes$ S+ G% B# d K7 R9 `+ M5 Z
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The machines also must be cleaned according to the following
4 U6 }5 r7 h6 |5 `0 sschedule. All times are constant:
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MachineTime between cleanings Time to clean
+ e: v. I) ^# L. h$ AA90 minutes 5 minutes
' _# I+ M* \0 d8 M( Q+ }8 ~B 90 minutes 5 minutes! \4 S* P* O2 V1 b% q& m$ Z' T8 l
C90 minutes 10 minutes, `3 |2 ?. @, I3 I
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Place the graphics for the queues and the resources. : T; w3 e) r( h8 X/ V! n
Run the simulation for 100 days.
1 x+ ~1 @% `. v8 T2 S s& EDefine all failure and cleaning times using logic (rather than resource
/ L8 Q2 k. {" a$ A/ Icycles). Answer the following questions:% l4 u1 Q E' |+ d6 K
a.What was the average number of loads in the waiting queue?
( k7 l$ f: K V- Z% C- bb.What were the current and average number of loads in Space?
7 b9 e7 m4 o q1 U+ XHow do you explain these values?
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