本帖最后由 GJM 于 2009-12-5 21:43 编辑 - G9 D t7 R& z3 J+ M4 T( ?* ?
# h0 E! E& ?. @, y( n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& q: q9 ^! g6 t+ N8 R4 ~; Q3 z7 Z
% o/ ]' {9 E% z" j1 s/ k$ c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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2 a! d Q! a+ w- p# ]+ abegin P_something arriving
% _9 U- M8 {1 o1 j7 Y move into Q_wait
! |$ y8 @* a8 c move into nextof(Q_mA,Q_mB,Q_mC)
+ _ H$ w9 w' `* ?, {/ c+ j use nextof(R_mA,R_mB,R_mC) for normal 48, 5 min
4 `+ j9 |: `# W send to nextof(P_mA_down,P_mB_down,P_mC_down,P_mA_clean,P_mB_clean,P_mC_clean), b2 m5 ], P U& y
send to die/ L( ~: s" | Z. i1 j
end* D& P. A5 P, e/ g6 |, t3 r
% W5 E& e2 v7 i7 y8 hbegin P_mA_down arriving
, i7 ]) B4 h$ S8 v5 j/ e1 N while 1=1 do 6 E2 T% u1 A* c+ {- u% E
begin
5 d9 @& p6 l* l0 F1 `. j% G wait for e 110 min
& L1 z3 C& x0 r" g0 C: X5 \0 O8 u take down R_mA
/ P e0 s& |7 F$ o$ b# L wait for e 5 min" M7 O: b ?" h, W) J$ j' _' ?% _
bring up R_mA G& G: T+ Y! n! v2 v( S
end
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( q- y8 E% S8 l. ]# k1 ~4 H( z# r+ jbegin P_mB_down arriving
( v& m/ Y9 ^; _$ w, L0 h while 1=1 do
& l2 I" y D8 Y0 b begin, W, ^) T: E0 P. ?. T7 z F
wait for e 170 min
2 F$ g C. t# ?6 S- W take down R_mB
# ~/ V/ n) w+ D0 G8 J o7 t5 m' w wait for e 10 min
" t/ o6 N: g% w& J; S bring up R_mB
& u3 P( u8 z! R7 L end
2 T2 U$ W4 [7 D8 _$ Eend
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begin P_mC_down arriving7 x, N/ w$ A% _" D2 z
while 1=1 do
5 ^% b5 g" c2 s begin, p3 T' S7 L' h4 Z
wait for e 230 min
# U" C! L8 y: g# v5 a% g7 C* G+ j take down R_mC6 E7 `+ r: B1 O5 _9 t# W8 g2 X
wait for e 10 min
{5 @4 L, q9 u bring up R_mC
. h, o3 x# ?6 t& g, \: E end3 ?3 X2 i& f( B; w! Q
end* l$ o6 j8 J% \5 u8 N
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begin P_mA_clean arriving
z8 R# c" o2 |& z, w while 1=1 do# S6 t% J, k' @
begin9 z: O+ c, g( F9 f5 ]" f0 W9 M
wait for 90 min& N& d8 Y9 u5 \
take down R_mA' a0 M' Q9 u* J
wait for 5 min
6 \3 B0 h1 l* o% d9 \2 ~ bring up R_mA- J% D. v% G( o' t1 Y7 e& V
end
2 T5 `7 V0 Q( b7 [ B" Gend
+ ?. M; B) R& t" l
8 f8 \ p$ \5 ibegin P_mB_clean arriving" D) K0 o5 w# K4 g" x1 a
while 1=1 do
( O$ n7 Z' }( E: M6 g( A begin
! p" y+ B( p+ X wait for 90 min2 M0 w5 @8 X5 C( \$ `: @. H, m
take down R_mB' U8 y/ U: I5 k5 f' f1 y
wait for 5 min
9 f& s2 A& N( w, i0 F( H bring up R_mB9 T3 D/ a# s0 G8 R
end9 J( C' F) D* U
end
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begin P_mC_clean arriving- ~2 g7 i, ?( ~$ v I" Y. j
while 1=1 do
# G% V, _: Y$ W( h begin. h* S% N) o/ c) }
wait for 90 min/ T' z3 h5 t* b3 Q9 c
take down R_mC( S, R& h/ p4 S
wait for 10 min
. @6 s+ o& P2 u! }5 U1 G bring up R_mC* `4 {$ P* [0 @9 \
end
& g' ?8 L! L6 Z3 A9 _ iend
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Exercise 5.9
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Create a new model to simulate the following system:) H5 b7 {$ T W: q7 v+ A$ a- l
Loads are created with an interarrival time that is exponentially 5 K+ N' }( o( C; r; Y: Y
distributed with a mean of 20 minutes. Loads wait in an infinite-
- {1 W2 [- u2 s, z; Qcapacity queue to be processed by one of three single-capacity,
& E& ^/ T( }2 V% ^- K! zarrayed machines. Each machine has its own single-capacity queue + x8 ]3 |2 i& z2 e h) I+ b
where loads are processed. Waiting loads move into one of the three
+ B+ v; s: f* n0 J3 tqueues in round-robin order. Each machine has a normally , h9 y9 e/ x9 J# T% ]# g. |
distributed processing time with a mean of 48 minutes and a standard 4 V& n- f. t; G1 J4 G
deviation of 5 minutes.
, L3 D9 o# h& {8 m5 [) VThe three machines were purchased at different times and have 8 \7 f' c* A U# b/ R- |& d& b* F5 I
different failure rates. The failure and repair times are exponentially 6 ? c% [0 k2 [) ~. `& E
distributed with means as shown in the following table:
8 H( F, K4 G/ `8 ANote The solution for this assignment is required to complete - h6 `/ F* S4 {8 d( ?) t
exercise 7.1 (see “Exercise 7.1” on page263); be sure to save a copy of $ h0 o6 b0 }4 L+ y+ p& B& S8 X* Z
your model.
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8 J! o1 X. g7 I, Q/ h# MMachineMean time to failMean time to repair
: M5 C! x6 E( f0 N6 _' \/ `A110 minutes 5 minutes) N7 W% D' `2 |1 r' [
B 170 minutes 10 minutes
- ]& a$ i: b; QC230 minutes 10 minutes
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The machines also must be cleaned according to the following 4 C/ b) q0 M# ^. V0 @0 ^
schedule. All times are constant:
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5 c! m& ~3 @/ V8 IMachineTime between cleanings Time to clean
7 E) O# l0 ?5 r5 sA90 minutes 5 minutes1 a. M* ?+ y M
B 90 minutes 5 minutes
( b& b6 z* T" u. `9 o+ FC90 minutes 10 minutes
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' p& u& y2 {, cPlace the graphics for the queues and the resources. # t+ d3 `6 \- M
Run the simulation for 100 days.: t) Y& ^' W4 ` x: z
Define all failure and cleaning times using logic (rather than resource ; X& n) l9 W/ E" c+ _- f
cycles). Answer the following questions:
4 z% {4 J' b4 P7 da.What was the average number of loads in the waiting queue?; v: f4 w. N0 @5 x3 U
b.What were the current and average number of loads in Space?
$ K4 U( R2 t, p; @0 d4 NHow do you explain these values? 4 d( c( O3 C) Y( B% c# c* Y
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