本帖最后由 GJM 于 2009-12-5 21:43 编辑
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) v2 u. }' z- r* Q" y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* ^. b: e, m" h# t9 E- @' M# @/ g
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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!
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. [# q1 A1 D- `( M6 X, cbegin P_something arriving
/ z, k9 u" ^( K move into Q_wait
2 v1 V, J2 D H" d* `' }& o/ z8 a/ _ move into nextof(Q_mA,Q_mB,Q_mC)4 n( W7 o5 V: H5 I# A5 S0 U
use nextof(R_mA,R_mB,R_mC) for normal 48, 5 min2 J" u; @; r2 Z3 u. V
send to nextof(P_mA_down,P_mB_down,P_mC_down,P_mA_clean,P_mB_clean,P_mC_clean)
5 V; }8 D5 v: U# Y) Y) ~9 @3 Y send to die
' v' X! M8 M6 hend
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begin P_mA_down arriving+ }3 r3 u, L0 e/ j- s! ]# f2 m
while 1=1 do
- Z3 Z1 f1 c& l% y. ?# z begin
' N# r M9 ]' Z. K7 \ wait for e 110 min4 B- C& ~: U9 Z
take down R_mA
3 `2 a5 ^6 F. s wait for e 5 min6 q' j+ a' h4 s# Z6 m( {6 O+ i! z( Q
bring up R_mA
9 E4 {- A- I0 p& M& L, j3 L7 x end
+ E' F1 z' w6 z3 qend
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. ^2 Y) c1 Q/ C/ E4 Ubegin P_mB_down arriving
) R4 i, ]! M9 U while 1=1 do% ?3 `) `0 J- {$ ~7 `/ S8 ^4 _5 q
begin" V9 t: V, w' R, }0 @; h+ G, t J
wait for e 170 min' C1 E5 U3 I, ~1 l. q4 G* e. H
take down R_mB
|- x7 t8 z% l1 W wait for e 10 min
J: f% Z0 y8 M3 F4 b. x bring up R_mB
3 _' b% K4 z( [ end) W1 p4 r: T! h5 o! l! V5 a
end
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- K% N* _1 r ?" Ibegin P_mC_down arriving
9 C& l; e) {) }, l; j9 h9 p while 1=1 do
% ~4 Y+ S4 \5 ]# J2 _! B3 R, A begin
% X( F6 U4 W$ K0 ~7 R wait for e 230 min
" K. A& [0 r" F" q. D( u take down R_mC
; h7 c. x* u0 _2 D wait for e 10 min. A$ z) b0 x5 \, {' [" ^
bring up R_mC
8 X5 o- j1 t! j: N, F$ X end: u9 m5 J: S2 J& Q; z- _( @
end1 w7 P, q3 H- @) e
! B, j9 Y- v, J: Nbegin P_mA_clean arriving6 a* n3 o+ A; p0 r& {7 j4 ^
while 1=1 do3 L4 W' L0 f/ K" G% h
begin
. g8 a. u# H/ c- @/ [/ V wait for 90 min
' B3 u9 h" N; N1 @# j& m4 t* H1 @* B take down R_mA
0 \* N! {4 y+ M8 ?1 g& c- ?( I wait for 5 min
$ i" S; _2 C C0 G bring up R_mA! S$ ?" R$ g, a& T0 l, g5 n4 V( s
end
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begin P_mB_clean arriving
% z* H" H+ a; |* d8 v# A; ^: A! f6 R while 1=1 do/ Q' L2 {) [- j6 D N/ \: z
begin8 x, A9 O! Z+ Z
wait for 90 min v5 P; t2 Z/ p
take down R_mB
7 q8 O {7 F2 O wait for 5 min9 y) U" W& y4 e. p
bring up R_mB" s6 y$ C' O5 }& q
end* e7 U" ~1 ~7 v/ x
end
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begin P_mC_clean arriving
3 n R$ o( [. a while 1=1 do8 p! I; |' k4 {% f6 u
begin7 I5 B% v+ b, O1 l) u4 l8 [$ u1 s
wait for 90 min
' P( U5 C( |3 K |* q, p# ] take down R_mC
" e% g! n: I% e* s# N/ Z8 f+ w wait for 10 min
E1 @, W, |! w. j' U, i9 T& \4 H bring up R_mC5 W& B* Y: Y( {8 q/ L# z# e
end
[& ^# ` ^$ J3 g/ E7 `9 [7 |end# _' x/ G7 D5 P o: h
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Exercise 5.9
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Create a new model to simulate the following system:
8 q/ ~0 e7 t4 `5 Z. J0 p* ^Loads are created with an interarrival time that is exponentially
( F, S2 v2 H- h$ }distributed with a mean of 20 minutes. Loads wait in an infinite-" s" J" `2 i! M9 q
capacity queue to be processed by one of three single-capacity, 6 W% t/ A2 Z3 U) O1 S# z5 s
arrayed machines. Each machine has its own single-capacity queue ; [9 J, M; S: ?2 ^' ~6 }# R8 T
where loads are processed. Waiting loads move into one of the three 2 E4 Q7 U% C! G
queues in round-robin order. Each machine has a normally
2 Z0 t, i" [* [- t$ W8 adistributed processing time with a mean of 48 minutes and a standard
/ o; Q" ? D; g6 `deviation of 5 minutes.: a! O. t3 k. T4 _1 l* _' o
The three machines were purchased at different times and have - B* f+ r2 G1 Y# w1 K8 v
different failure rates. The failure and repair times are exponentially
; t* k; W& A9 I L! Jdistributed with means as shown in the following table: $ S% b' u4 d8 H
Note The solution for this assignment is required to complete
( i2 z& ^0 g+ ^ Mexercise 7.1 (see “Exercise 7.1” on page263); be sure to save a copy of
& c' V. d, |+ f3 K [. M3 ?your model. 5 a9 t1 z+ x }" }; }, c
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MachineMean time to failMean time to repair! p* ?! U4 {+ X' Y; h
A110 minutes 5 minutes
9 s c& a& i+ J7 EB 170 minutes 10 minutes
8 _* V) A; {/ J3 dC230 minutes 10 minutes9 [$ |! `; e0 b$ r: h
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The machines also must be cleaned according to the following
( f! \" M& L( |* bschedule. All times are constant: ; O9 X6 c7 v" l* L/ {3 E# d7 Q! x) I
/ g/ [# t( g$ [MachineTime between cleanings Time to clean
; }) b; a( u1 W4 V* ?1 P$ CA90 minutes 5 minutes
+ T. J$ L& e) G; L x% u. m/ `B 90 minutes 5 minutes
* w2 I# b5 X0 A% J" cC90 minutes 10 minutes
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6 @# R# D' y, R( J( l9 lPlace the graphics for the queues and the resources. 9 ^# A, g8 z( Z/ E1 z
Run the simulation for 100 days.3 M! u1 ^! K1 D, n2 G+ s
Define all failure and cleaning times using logic (rather than resource 8 H2 ~& D- U N
cycles). Answer the following questions:
/ |' W2 ]* n" W) V1 _a.What was the average number of loads in the waiting queue?% ~, @/ W& }* ?& y" `$ z
b.What were the current and average number of loads in Space?
* V- Q+ @! Z8 T2 Z) WHow do you explain these values?
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