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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,( t" h- n1 U" q) @. S8 I0 d! n" ]
  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.# n: a1 K+ i0 k, I+ Q
  Loads are processed by each operator for the following time:: q5 o0 T5 V% l$ ]8 w( ^
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 n" z! [# U6 P9 Y/ x& 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.
5 V7 N' _6 W% j8 e0 c' _* e' K7 p  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
* J9 Q% `! [" ^# P6 D: n& V: ?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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问题:
# I) t, F5 `# xAfter running the model for 10,000 days, what was the average number of loads in each process?5 w; o& t; X2 I; V; X# |% F
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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
7 N+ L7 K+ I7 \" s% V% `move into Q_wait /*Capacity is infinte*/1 r- x1 ?! D* j4 q
move into Q_process /*Single capacity*/
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2 q+ ^# I' s' ], G: Juse R_A for n 60,10 min /*Resource A*/  P( }" F% V$ ]8 }& I1 r

, ?7 p9 Q9 L/ V  c' l. qsend to P_B8 k; G1 W% H. r' Z8 R
end1 t( D$ l) f7 E$ Z& e! W9 t
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P_B and P_C is similar
1 }) K9 A) e$ G# J5 striangular 30,60,90 min- Y' N, C2 F" z% A3 l
u 60,30 min
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7 \9 i; \6 W0 D/ G; W& t* D/ N4 Fin P_C, you need to send to die.
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7 M0 d& o! d" AThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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' P, A; E& \% z* |9 X$ LRemember 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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