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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,
$ @0 C, w8 @) {- ^* ~  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.+ y+ p- b% e! T5 y0 X0 `* E) H% X
  Loads are processed by each operator for the following time:
$ ~. K3 I" @( c+ [- V/ A5 T  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
: Q" k  D. |' g6 n' k+ p  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.- F3 r- x' t1 k6 R2 S, }
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
2 \" A$ {4 Z# l# L5 z% h: i6 g' [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.8 T) Z* y% b4 h& u- h

, B3 d7 p" Q9 a7 `- w- z  ?: H8 ?- W问题:
! z+ V+ r& p7 P" V" p+ qAfter running the model for 10,000 days, what was the average number of loads in each process?
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1 K$ w& `4 O* Y, X. ?. y不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving; w, r/ n8 o8 i; P4 p2 e* F" |
move into Q_wait /*Capacity is infinte*/
; _( F2 D% x0 }5 Y" Jmove into Q_process /*Single capacity*/" G' c5 h% d1 _6 ?1 |
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use R_A for n 60,10 min /*Resource A*/' Q' k9 K4 B. ?& g1 ?8 o9 b

7 V+ O; }0 v/ {7 |( ?4 q' D* Bsend to P_B# p3 H. v- E% ~+ z+ H! S" j1 J, ~
end3 U, h, n7 ]1 w' ^
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P_B and P_C is similar' k' d* w0 L& [4 Q
triangular 30,60,90 min5 R/ H. w9 F" K; i9 [/ W
u 60,30 min
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in P_C, you need to send to die.
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.4 K* W4 Y) Y4 b% p7 c0 |- m

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Remember 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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