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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,. G: r1 _3 o# r4 R$ Y! y9 a2 L
  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 R2 l4 `' _! v, v1 f+ S  Loads are processed by each operator for the following time:; g- r! W! ~+ W# s$ b; P+ O  D
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins., J( `6 F. J# R0 ?% y$ n
  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.
  q/ N3 y6 l' a* D0 v  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.& Y7 H0 J, a4 k2 k1 o9 w5 @7 r7 X5 S- p
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.
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7 }& {. `  ~" N/ h+ k问题:
; E) V8 v7 `4 I2 R, V+ |After running the model for 10,000 days, what was the average number of loads in each process?
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+ V4 n9 N: O1 ?不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving8 ~2 q" ~+ }1 _) T3 n6 L, L
move into Q_wait /*Capacity is infinte*/
# P$ K$ E* X' T. x; m+ A2 U: X1 lmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/. I  ~4 H5 T& J! O. T% d
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send to P_B& \/ \; L; U) z
end! L0 u& \5 u6 C* ?* C+ d4 S4 }4 k

2 P5 V# q' C8 \: \9 _. A' k1 C/ rP_B and P_C is similar
' D+ S+ R0 x1 |, V8 g5 q$ R7 Ltriangular 30,60,90 min8 U. x  s1 Y. o( e
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.+ W9 H) h1 A% F8 D8 [$ C, c

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$ V* m7 F4 q! L6 s1 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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