本帖最后由 GJM 于 2009-12-5 21:43 编辑
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, C6 ^! C/ V' l2 Z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9 p. h# R' E8 N& f% N, D- ^
+ y6 R" B% O5 z9 C/ j) s% i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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5 k& E! X& H5 P% A5 G) h' U: @--------------------------------------------. E: U' R6 w* i! m
begin P_something arriving
1 r% }5 C$ Z. K" x7 q1 i move into Q_wait& O% u0 L4 r& }3 y
move into nextof(Q_mA,Q_mB,Q_mC)
! m+ `- I5 Z8 ~! b. y use nextof(R_mA,R_mB,R_mC) for normal 48, 5 min4 Z! u$ C k3 f2 d9 ~3 Z
send to nextof(P_mA_down,P_mB_down,P_mC_down,P_mA_clean,P_mB_clean,P_mC_clean)$ h: w8 o4 M7 X5 Z0 H2 \& [$ X
send to die
! P, W' r: M5 fend, d; \8 m) w! ?# @6 K
2 Q: V) ?5 E# ^0 dbegin P_mA_down arriving3 @6 G( a9 `8 N& U
while 1=1 do * q% [% H7 N3 V
begin4 M, X6 J/ \! [
wait for e 110 min
0 m4 H# j8 }7 R; i take down R_mA
/ U$ b7 F! L# X0 q; F ^+ o4 c wait for e 5 min
. x. u/ n! f$ Q+ |; D bring up R_mA1 _9 G9 H: A4 J% a
end* z" w- M2 \" @, k* [' Y3 N
end4 n+ z5 k2 w3 F! S# Q2 m5 v" j
/ f. n' v Q! Y, B1 {. C5 d6 Jbegin P_mB_down arriving/ U- {- C2 N: Y" z* H, Q2 u" K- Y
while 1=1 do
" T6 M' n' ]" w( D, V begin! o$ z1 \& J% x' z
wait for e 170 min
6 D7 F* N# d( c1 _# S take down R_mB' t# b5 \4 A* O% \
wait for e 10 min
' C0 B' u/ u" x bring up R_mB, f0 V( h8 Y: ?: E
end
1 a7 a: x, J0 }" o3 |4 iend
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begin P_mC_down arriving/ `: ?0 X' `; ]2 I# m# g5 s
while 1=1 do : i2 s# @; j% G, V
begin
" O$ D; Y. f( G8 c& a W# {6 f; @ wait for e 230 min
y8 I: [* O$ o$ X9 A7 ]; r t3 N2 Z take down R_mC
( t- A, K& f: }7 p5 [. @ wait for e 10 min L- V8 G$ t& k# ^' ?" f0 H# \
bring up R_mC
& x% b" G# f1 i2 y( n end
. r* L+ G+ y$ X9 d9 R) f" ?end3 g) P$ ]8 n0 s6 F
1 Q3 W# W6 _+ m# Qbegin P_mA_clean arriving: R9 |$ L% d: a' I2 j( V
while 1=1 do
: o7 b ^6 C' Z begin* z& K( m8 [5 p F
wait for 90 min
4 ]7 U0 e% u3 c& I take down R_mA7 C/ R# \6 l) k9 m9 F, h( D, Z7 P
wait for 5 min5 N# B/ ^' a% Z2 x. D6 a
bring up R_mA1 {9 V7 o& h" t& w. Z. _, Z5 V4 q
end
7 K; i8 F* c9 U8 V: }, O. G& I$ Oend6 {7 @4 b0 l/ v& [6 g0 _# |9 ?
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begin P_mB_clean arriving+ v, d. n( ~. h, z+ S6 m
while 1=1 do
) B s: h4 A4 g; E$ t4 O0 b begin( I, R" q! ?/ e! `" R) s
wait for 90 min2 J' G1 _" g9 A' Q, h
take down R_mB8 R7 \' O6 Z9 U5 b9 k
wait for 5 min
6 w' K0 o5 u& r! M6 y bring up R_mB
- n( D0 I' T0 L7 W end
3 J0 ]- S, r' p+ \/ E4 Aend
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! @" b* J# { {" nbegin P_mC_clean arriving3 t# [# g; o4 K# Z3 N8 } @# O
while 1=1 do
4 x$ @# A, C: p8 d0 q) }* Z begin
- P) H5 P* F, o7 o. t+ | wait for 90 min: I8 U) k' j% ?. W3 v( U
take down R_mC
" P3 E# |9 z% v. z1 a# f wait for 10 min' |( W6 F0 G" u6 g/ L/ S
bring up R_mC" m1 ]3 Y% T, Q e' {
end
5 c/ {. b$ O% b. v" _' j+ d% Tend0 N* x* N5 Z" g+ ~& v
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! E( f6 j, L; E* Y7 jExercise 5.9, P3 Q- V5 \' ^( Z0 M
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" J5 ]3 O; h1 a* d* f/ RCreate a new model to simulate the following system:
$ K- }( M7 v! ?5 E2 _% jLoads are created with an interarrival time that is exponentially
( A# }/ Z- b1 a9 n* ?distributed with a mean of 20 minutes. Loads wait in an infinite-
4 u" L6 v& o, A# [4 N4 Q3 q8 bcapacity queue to be processed by one of three single-capacity, % Q7 K+ g3 ?' S' R1 s
arrayed machines. Each machine has its own single-capacity queue
! R" Q I: T+ k, A' ?1 nwhere loads are processed. Waiting loads move into one of the three 9 Q& Q( U" Z/ b5 j8 H
queues in round-robin order. Each machine has a normally ) z0 _; c/ d$ T6 M1 t3 Q N; p
distributed processing time with a mean of 48 minutes and a standard * W- D; n2 Q6 u- t
deviation of 5 minutes.
8 m; u9 u7 C/ ?: S- NThe three machines were purchased at different times and have 5 a9 S9 P: ?" d q& |& S' |6 R7 v
different failure rates. The failure and repair times are exponentially
X6 ~: O4 Y' _; ~distributed with means as shown in the following table:
1 h: z- @7 {4 b6 `$ r" n6 M J% ENote The solution for this assignment is required to complete 9 z' j n% U6 W; F
exercise 7.1 (see “Exercise 7.1” on page263); be sure to save a copy of ' n3 P4 o" q7 y9 b
your model.
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MachineMean time to failMean time to repair: [/ }( Q8 z' I. [
A110 minutes 5 minutes
/ H, a. O/ v( N) NB 170 minutes 10 minutes
6 B* A( p- l9 _6 ]. j: OC230 minutes 10 minutes
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The machines also must be cleaned according to the following
' f2 j& A+ r. X! }8 J! ^schedule. All times are constant: 7 j5 B% C7 T; S3 R$ m
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MachineTime between cleanings Time to clean
- W3 J, g U: UA90 minutes 5 minutes% V. \; G- T" _. W
B 90 minutes 5 minutes5 O, O) D* P* U' z
C90 minutes 10 minutes) r( R e; _) P$ m* q1 e
7 g5 L( o; ^) B4 Y0 M/ b! [: I( nPlace the graphics for the queues and the resources. , {/ v9 }, W( \0 w- o
Run the simulation for 100 days.
0 w: E1 [8 [: `/ a5 t# @0 I6 dDefine all failure and cleaning times using logic (rather than resource
2 B( \$ W! Q9 D% q8 }" q$ mcycles). Answer the following questions:" [5 F7 |9 Z: N( w- M& Q
a.What was the average number of loads in the waiting queue?* [8 F% K* Q* e1 t
b.What were the current and average number of loads in Space? ' _8 h% K0 o' F6 q0 a5 u
How do you explain these values? + r9 Y9 b/ u" j# G6 s- t4 @ k
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