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[求助] 本人初学auto mod,有一道题目希望大家赐教

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发表于 2009-10-3 15:08:34 | 显示全部楼层 |阅读模式
刚刚开始学auto mod,这道题目搞不明白,希望大家看看 题目是这样的,
/ [5 B; Y; H% c1 V6 ^4 ?9 k$ j  Create a new model containing three independent processes, each with one operator. In each process, loads first move into an infinite capacity waiting queue, then into a single-capacity processing queue.
3 R- z0 z' J8 E0 f; ~0 F/ A  Loads are processed by each operator for the following time:
1 _: S: l" X- Q  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.2 @8 N) U5 P$ {  T1 u  G; x
  Worker_B does the job according to a triangular distribution with a min of 30 mins, most likely value of 60 mins, and a max of 90 mins.
7 z* H# \: u, s' F  J  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.8 q* p! k1 G9 A  i7 J. Z: w
Send loads to each pocess at the same rate (an exponentially distributed inter-arrival time with a mean of 68 mins) to understand the difference in the processing times of the three workers.: y/ o; H  k  `0 n2 t

0 D4 k  ?: `3 t. W+ B2 t问题:0 }" ~0 H9 ^* }: i- o2 @
After running the model for 10,000 days, what was the average number of loads in each process?8 I+ W1 b% _/ r; v

6 `$ W$ e' c" U( _+ [( ?不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving$ _1 q) Y( D$ y; O5 e# N3 Q+ K  x
move into Q_wait /*Capacity is infinte*/
3 h# e' z. u! y; v8 ]2 f* xmove into Q_process /*Single capacity*/* L. e2 F0 V: ~/ F) L
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use R_A for n 60,10 min /*Resource A*/- C4 |7 E) L4 \- I5 Y; e, N

! B0 E( p# v( |7 Usend to P_B
/ B& n( t6 e: g- u* ]$ mend
* I! `. E" n7 x$ I& |
3 ^0 e2 ^. ~2 O% d' P! {# U" u2 L; {P_B and P_C is similar- F4 A' f) w) R: g" A, \
triangular 30,60,90 min
* P0 o; g; ]- l2 Su 60,30 min+ Q& C" n4 {8 e7 Y2 X0 v4 G8 U
7 Y4 c/ h+ a$ s- s5 x
& K; j9 g. ?7 I  g5 v
in P_C, you need to send to die.
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* A6 M+ ~1 d0 x. W; z8 ]8 u; n5 AThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
' P2 A1 W4 A" k$ v2 [& t0 }3 f% P4 A/ j8 [' E& m

: o3 |( b9 |5 S/ X- }9 ]* Y9 W" N  HRemember to turn off the animation before you run your model.

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 楼主| 发表于 2009-10-27 23:53:02 | 显示全部楼层
thanks...
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