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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! x2 B6 r/ B. s" G2 A
  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.
- e7 v1 n1 o$ l. J6 E- e  Loads are processed by each operator for the following time:& f8 Y, s5 |& d- g: O
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
- c$ P. _# U7 i! P1 _4 [3 u  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.. E. X, A6 F+ V+ f8 e6 A! h/ \5 j8 A
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
6 C; B" [4 B& W6 q. S( \: jSend 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.. [7 T, W. W9 N& f; r
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问题:
# G0 Y: j  F* R# }6 R: YAfter running the model for 10,000 days, what was the average number of loads in each process?/ ^$ m4 E) w* \# U1 q: P. Q0 g
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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
5 }  W# A) @9 z+ p: pmove into Q_wait /*Capacity is infinte*/0 T- N$ \, p# b; U7 T: L
move into Q_process /*Single capacity*/$ K8 p* r$ ^. A* p
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
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7 v! T6 ]' t2 W; x2 Y) w5 Q5 E$ GP_B and P_C is similar
7 t; n: }7 U1 O$ g( a' Ptriangular 30,60,90 min
% d4 ]. F6 |$ K3 t; tu 60,30 min$ C  F! o: Q) f; y2 y% f- L* Y7 `
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  i' f. ^2 H$ e* [+ z7 \in P_C, you need to send to die.' M4 j; a5 I2 O, W- o/ V
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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.: Y: b4 o$ \. t4 i% q' _. V

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% @3 p% i' y5 r: 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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