本帖最后由 GJM 于 2009-12-5 21:43 编辑
0 N) M' w- Z* c8 R: E" p$ t$ l2 d6 s6 x+ |2 v+ f
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
- u' r# Y7 o# }1 }) _ N
5 Q: R7 x$ C3 L+ M* ]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!
+ n3 ~! w3 {' N. w/ P* C2 x7 O b0 ]8 G) Q! d' w0 f0 A9 @
--------------------------------------------* h0 Y/ r# Q6 {2 j
begin P_something arriving
, @; c( U0 v# s( v9 [ move into Q_wait
2 y" z- y3 @# e2 V8 { move into nextof(Q_mA,Q_mB,Q_mC)
( ?) r/ g" p6 g# Q use nextof(R_mA,R_mB,R_mC) for normal 48, 5 min
8 c2 p' W( O6 z0 p* W1 A) V5 r. S send to nextof(P_mA_down,P_mB_down,P_mC_down,P_mA_clean,P_mB_clean,P_mC_clean)9 k. Z: \6 M' H) r" p6 B3 t2 ]
send to die) ^$ E: _. }: q
end6 O C+ {& p. T! C% X" G* ]* K/ E* d
* r; j; A3 Y- E* ibegin P_mA_down arriving) a U( _4 @% @9 O
while 1=1 do * X8 v6 ~. b# C/ E1 X1 ^* p. P
begin- ~9 i" ?( M+ d- W, |
wait for e 110 min& ~: x0 f& q/ r. S
take down R_mA
6 r8 ~ ?6 @: R8 p wait for e 5 min5 m0 B6 c1 i* @
bring up R_mA* V4 b1 W+ K3 }* m8 s$ E
end5 f+ v, Q- `3 W1 r
end
$ L/ x! H9 ]" V J4 K
( t( }% W; R! jbegin P_mB_down arriving: d) e! j" y5 b( n# T7 T
while 1=1 do
0 ]) t* O/ U1 s begin
) r, F+ y6 q( u$ l | wait for e 170 min! E& ?' n+ K9 A/ l! q0 B3 i3 e
take down R_mB. T5 S" C3 S) ~% U4 o" m+ ^# l) C
wait for e 10 min5 _: @- E) Y/ x: {- }
bring up R_mB/ N! I" i: x5 Q& [* P" g O5 H
end8 J+ c" s6 m; D( Q/ ~! [
end
! s( @$ p: H' }" E
3 i, |& c# a( V* |* x5 M3 dbegin P_mC_down arriving
. D1 ]9 K! L/ V) Z$ v1 z while 1=1 do
4 q3 O% h& x5 F7 `: f begin
, ^% T9 t* S" h4 ` wait for e 230 min
! x. {/ Y+ \! ] take down R_mC O! T7 P. \6 Y p u( J% ^- U' b1 o
wait for e 10 min6 C `: i0 ]7 s7 O8 v4 ~
bring up R_mC+ \. W; L3 L" E2 |
end
$ G7 x9 z" A$ E: m$ l4 ]4 Jend7 C: l% N+ e/ g c
! O7 o9 l4 k7 {begin P_mA_clean arriving
. W8 \: o& O& u$ p while 1=1 do
' K- D j9 [) r8 `# r- j5 K begin5 n5 J# w* O6 W, p' \
wait for 90 min
3 V0 R$ G6 J6 ` take down R_mA1 O5 H2 N! v( q. X
wait for 5 min2 D; O0 I9 d: x5 I
bring up R_mA. T$ {3 Q& a5 s1 P3 F9 d+ a6 I" c
end
5 ?; |8 g+ o# w3 x0 j% Cend" j* Y3 u0 @, E$ T9 P
, @' }# B+ B: J: i" K* vbegin P_mB_clean arriving! V* k& G* a" ?5 s. b" G- P! d- c1 q6 a
while 1=1 do. \" c& P3 r" i j
begin- _% U6 N- m( L1 I, H& I
wait for 90 min
6 u* F2 F: b: P0 R- ?0 J take down R_mB
, f1 A1 n0 i y1 T$ I% _: e wait for 5 min
5 D u5 i1 t+ a9 N, M( |$ r bring up R_mB
1 \; ]- h! C4 f- a4 \* a end
* r. n; c! g/ ~end/ o3 r: i8 K" M6 q
* n. s2 F. ~& N5 u7 V2 s
begin P_mC_clean arriving0 _9 s7 N6 q o. z
while 1=1 do
U+ d# a$ z5 T begin
& i3 r0 [9 C7 [+ y4 L( p wait for 90 min, N! f5 p" W: Y. v+ d2 C* q
take down R_mC
\. z/ B) J/ Z* W! W; B+ i wait for 10 min
2 X/ P5 K& J0 O4 A4 N bring up R_mC
3 j7 N; c, {: ]3 v5 { end
7 H2 ~+ s4 R8 [2 j% m* `' Tend
% {; X b$ W. ?4 A* F) `: n- h----------------------------------------) [6 \2 L6 s4 M0 C& u& ^* i" z( g, f
! R0 d# v: `, [. q* X/ L( R
Exercise 5.9
, A( ]$ ?5 ^* E: o( J+ h7 W6 O' R4 h2 N" S
( O/ f8 }8 A. Q5 ?Create a new model to simulate the following system:
& c2 _1 V9 D! c- |8 ]% _Loads are created with an interarrival time that is exponentially
# D3 s9 \' ~2 w Z- r) fdistributed with a mean of 20 minutes. Loads wait in an infinite-2 v {; y% a$ C
capacity queue to be processed by one of three single-capacity,
) l T! P" \ p! {arrayed machines. Each machine has its own single-capacity queue 1 T( K2 A" t) Y! m7 t4 h h
where loads are processed. Waiting loads move into one of the three
0 S6 R6 n6 S' Q5 fqueues in round-robin order. Each machine has a normally
5 i) Y2 ^- H$ x( g/ ^/ Gdistributed processing time with a mean of 48 minutes and a standard 5 X* E P) m1 R; h/ W8 l& J7 \
deviation of 5 minutes.5 {/ j0 c5 C5 r' E
The three machines were purchased at different times and have
+ T; C: U1 z+ U/ C5 B. S/ q* pdifferent failure rates. The failure and repair times are exponentially
) o. z2 J o5 n! G- ]' Gdistributed with means as shown in the following table: 5 l; z& q; D9 g; H. J0 F: a
Note The solution for this assignment is required to complete 2 p% a* m: C y2 i' j8 B6 i8 T
exercise 7.1 (see “Exercise 7.1” on page263); be sure to save a copy of
* g& v3 L# [" R7 w( Y2 w3 T6 Uyour model. ' s/ j; d( f' y/ g- e
1 y% g, q4 x2 G4 v7 X1 y( cMachineMean time to failMean time to repair
, H; ~& T/ w/ ^: W: e5 hA110 minutes 5 minutes% X) _ ]1 X7 W7 y# l4 |7 W
B 170 minutes 10 minutes& w9 [" i7 h8 c0 i; n
C230 minutes 10 minutes
; c& w9 g+ Q0 H% ]/ G8 r2 u6 q" L# ]
The machines also must be cleaned according to the following 8 H0 g |% G$ O8 y
schedule. All times are constant:
! g9 B! m1 k9 r6 o* a+ |2 I8 P% q! ]2 W! ^# Z2 Q& g& M9 r8 i
MachineTime between cleanings Time to clean8 g3 y9 p+ T; }& R' {- i
A90 minutes 5 minutes4 x& Z4 B& A) ?
B 90 minutes 5 minutes. @7 g y. r. E2 r
C90 minutes 10 minutes
+ f% U; s% O+ V6 ^) _$ l: E4 F% ]
& O: s1 J' ~% }/ f S dPlace the graphics for the queues and the resources. 7 t+ W0 W: V& M) Y. |$ L5 V6 g
Run the simulation for 100 days.
& ~2 }. o, h) PDefine all failure and cleaning times using logic (rather than resource 2 R( E- V* a& {- a% ~
cycles). Answer the following questions:
9 K" A% k- s' k5 q8 x" Ua.What was the average number of loads in the waiting queue?3 | D( r5 u5 G; m* D& g- S a
b.What were the current and average number of loads in Space? $ m- i: r* t" W2 M
How do you explain these values? % O. Q4 [' P( e0 n9 W1 B
|