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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,
8 V3 A- P$ z! W, m8 k. f  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.7 X. k% ?( R, w! x6 B, t1 L: X
  Loads are processed by each operator for the following time:' h6 p( z, X  u6 a
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.- D% C. R. T+ S! L
  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 R; q, _7 E! d5 [( n6 U
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.* i6 b' w" g' y  F) Z* s
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.1 x- [* U/ w' N4 Y: L
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问题:
' J' i' l/ `" [" K3 yAfter running the model for 10,000 days, what was the average number of loads in each process?' {7 a+ Q- a6 `" u( i+ R8 n. X" ~
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving" c6 P5 D3 o3 Q# h* {
move into Q_wait /*Capacity is infinte*/
$ Y* f8 S4 X9 lmove into Q_process /*Single capacity*/+ q: |) I3 Z; n' K+ P) Y- y7 Y
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use R_A for n 60,10 min /*Resource A*// [5 i% _- Y: h5 }( V6 `
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send to P_B8 \0 p" k* v  v, f
end4 W# b7 R' k' ]
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P_B and P_C is similar
* e# ?+ ~' C% L' D: z) T* A6 Ftriangular 30,60,90 min$ ^- Q3 I. p1 ~$ y$ ]6 z- }
u 60,30 min
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in P_C, you need to send to die.5 N3 R) W! m& N( Y! u

7 C8 ~% w  Z1 O% \Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.. X' ^2 Q7 r: c
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7 p0 o0 S/ W' S' URemember 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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