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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,& d% k1 H2 T' h2 R. Y
  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.
- a1 o: J1 i6 G* B8 g% C% _! K  Loads are processed by each operator for the following time:
5 x, c9 R) F4 ?. @% D6 m; f  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
. r; m5 Y- K8 I( b* q% ?* d$ ?! J  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.
1 i: B& |9 Y% l1 `/ U5 c  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
' I8 V4 Q  X; W# a# sSend 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.! d( V; _  I, e# e" O, b- p
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问题:
$ G: S  |% ?! c0 I5 `After running the model for 10,000 days, what was the average number of loads in each process?6 }% f1 }, C+ H' A5 H; U" _
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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
8 E& B+ s# a1 Q- G4 d2 P% }) Bmove into Q_wait /*Capacity is infinte*/
( u& T& l$ R/ umove into Q_process /*Single capacity*/( Y  s% _3 B; M8 E

. s9 ^6 V! l/ b/ F$ e3 Y! puse R_A for n 60,10 min /*Resource A*/* K. n& \' j# `/ e- \" I/ E
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send to P_B
4 s& V) v! \$ d- Eend
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P_B and P_C is similar$ y" y" A) n: I& ?
triangular 30,60,90 min$ ~9 C, L, G+ o3 j& ~2 G& \
u 60,30 min
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* F- N3 s8 W# v) l; m- }( lin P_C, you need to send to die.
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. `9 r0 H) ?* P0 f/ jThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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; D6 \. G0 R* p+ O  O$ M  {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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