本帖最后由 GJM 于 2009-12-5 21:43 编辑
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8 l/ M) z7 f4 [$ L. I/ @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1 g4 c, @, U8 X9 E
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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!& C! {( I. l9 h- o, J! n$ r/ o5 D0 {
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begin P_something arriving( ?' e$ K r7 U9 q7 y$ T+ {6 t# S& A9 f
move into Q_wait
3 ^% ], e+ j9 v+ X Y1 w move into nextof(Q_mA,Q_mB,Q_mC)
/ [8 ]( f, d" v0 n( v, r' F use nextof(R_mA,R_mB,R_mC) for normal 48, 5 min3 T7 f1 W! K' S+ T
send to nextof(P_mA_down,P_mB_down,P_mC_down,P_mA_clean,P_mB_clean,P_mC_clean)+ k) @' g- S9 o. L) O, k
send to die
& x X+ z ]7 D8 I7 K! H# u- Pend
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9 v- z% o6 q8 Y5 `8 q6 ybegin P_mA_down arriving
) L" x, z% u9 U8 H) [) T while 1=1 do
- V1 k O/ {; l" @& Y D @4 H begin
* M1 d, o) c" a+ l8 q5 z3 b! z/ ] wait for e 110 min
/ G- d% S; I* y0 F+ W* B take down R_mA& b. ~. D$ a* Y+ Q T
wait for e 5 min
% d) P3 m0 t; y# h- P bring up R_mA
( [0 R& c @- G: ^ end- m9 K; z5 u4 C8 j( i) }
end f' K# L; B1 J( H4 @
3 K( p) S0 x) D* @9 b- sbegin P_mB_down arriving2 O" T+ Y" n! |: |
while 1=1 do1 r- W7 E9 C4 E# {% ^6 S
begin
* Y. g% q7 H! d7 N+ ?3 ^! J wait for e 170 min* d, k( p6 I2 t
take down R_mB8 Y2 J% D; [! w6 D
wait for e 10 min
; }& h* _- o+ f& M( Y: c bring up R_mB
5 y+ \4 m4 S4 x7 ~; o/ H end- {+ U' c( w8 z6 h
end
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; O. x' L) ~% Q# P/ r3 L) m8 ]begin P_mC_down arriving
+ S0 b! f2 l2 M while 1=1 do
' `8 x* L6 V& M, d+ q9 Y: [" X begin& L* S+ m* D' m8 _% s# u! c
wait for e 230 min7 q+ q; r1 s# v
take down R_mC
& X- T3 W6 b: M* F& p6 g wait for e 10 min' n* f+ k/ h0 y; }3 w9 [$ N
bring up R_mC& y7 l/ \! T: g: h) k
end
% B* f7 `- R" w/ h9 ]. bend
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begin P_mA_clean arriving! d& x3 i0 A/ F; j/ K
while 1=1 do
5 u7 \. p% k d( k8 m. n3 { begin. U% t3 v* C1 _
wait for 90 min
5 ]4 K! G# H1 b5 B) g6 a+ ^$ w" B take down R_mA
! z N) p& T0 f wait for 5 min
+ N3 `; i2 [. a& K5 g& d. D bring up R_mA
6 v" H# F5 w( S3 g- N end6 N) C _, q3 a+ c& O! R
end, M1 D5 t: t6 g G
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begin P_mB_clean arriving
2 O# e9 f- b: t5 }" H* H while 1=1 do
2 W+ |8 B2 }$ h0 ^+ V$ J6 o begin
8 M/ m% w' B3 X wait for 90 min
# b) w4 P2 P9 k. B5 A* Q0 k z* y take down R_mB
4 Y. n2 `# V$ R6 M/ i wait for 5 min
+ M B$ q* I2 C& ? bring up R_mB/ z8 o9 Q7 x' m8 N! o& D) s- C8 Z$ ^
end2 U+ ^8 ~* w( J; T1 U
end6 {1 x, ?$ b7 Y
0 n1 ~; H2 r; {1 U9 \( ^begin P_mC_clean arriving2 V! X& I- J" {, Y$ o0 b4 O
while 1=1 do
# ? r# z# i) o# q5 p- j2 g! K( j begin
! M# m1 Q/ @" R# I" r wait for 90 min! u% i, @: c+ v. @2 S. |
take down R_mC
1 r8 u3 n) Z9 V' {" C# D wait for 10 min
5 _& U! ~7 J& f! Y% F( b" A bring up R_mC
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end1 b n* F v- K( s8 B- v( j; n
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Exercise 5.9/ a5 T m( W' h- r. @3 c1 |7 d
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Create a new model to simulate the following system:
R% c; p2 d8 O8 v+ M- f( }Loads are created with an interarrival time that is exponentially & y4 ^1 i. x- F e% k
distributed with a mean of 20 minutes. Loads wait in an infinite-3 ?" I* R. v j) r$ J$ l( |
capacity queue to be processed by one of three single-capacity,
4 T: w( i7 U4 C0 J3 Harrayed machines. Each machine has its own single-capacity queue 7 p, L6 B$ I4 G$ D) P# b
where loads are processed. Waiting loads move into one of the three : F, H8 C+ ]0 N6 m5 z
queues in round-robin order. Each machine has a normally . l& F2 o3 A( T9 M9 }( C1 l- j
distributed processing time with a mean of 48 minutes and a standard . [6 y( p+ C4 U0 Z0 k% O, W B
deviation of 5 minutes.
; s' }6 h' m. ]! dThe three machines were purchased at different times and have 3 U! c7 t! H' I- x
different failure rates. The failure and repair times are exponentially
' v q* O( J: x) ^# F. H) ~distributed with means as shown in the following table:
3 ^( l& M- [; ?5 g8 h; HNote The solution for this assignment is required to complete ! ?" `0 I5 u. B) H
exercise 7.1 (see “Exercise 7.1” on page263); be sure to save a copy of 5 _/ v Q I6 t4 p. H
your model.
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: r$ K. V+ ~7 Y9 }. aMachineMean time to failMean time to repair# y% j3 M. R1 _4 N, E4 I% R; D
A110 minutes 5 minutes
+ N0 x) [+ t6 A- {* b/ BB 170 minutes 10 minutes
. k4 g6 M( Q5 a5 x8 v3 ~. q- MC230 minutes 10 minutes
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The machines also must be cleaned according to the following
" t) W' M8 A* Fschedule. All times are constant:
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4 z# ]- t2 n, m: OMachineTime between cleanings Time to clean
^: ~; b0 E) n0 H; ]: q! r; d9 i! JA90 minutes 5 minutes
. a3 N9 Q3 q9 y# i Q5 IB 90 minutes 5 minutes: z! ?' d# U- \6 S) x7 N2 a
C90 minutes 10 minutes
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! L: t8 }% W8 X" [7 pPlace the graphics for the queues and the resources. 5 D$ s, d3 k" t! M0 I
Run the simulation for 100 days.
# C( o( @% t" N _3 P& o% i5 _Define all failure and cleaning times using logic (rather than resource
) e: m$ u Y, `! _cycles). Answer the following questions:
- [: k# _0 `. \8 _: s; K0 p* |0 ~a.What was the average number of loads in the waiting queue?/ h+ P" @* F9 ]
b.What were the current and average number of loads in Space?
& Q) D2 i2 F. v* z; x7 {How do you explain these values?
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