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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,
' a, ^& ?4 L: p( K  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.
% _! h8 @/ j- F1 ?  Loads are processed by each operator for the following time:
  m) c6 E+ P, a6 @$ N  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
* Q( f9 i$ G) x7 L8 {% a  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- m7 w  b- N9 k* M/ k  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
; V2 U- M6 j' Y0 j/ U# cSend 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.; `5 ^9 b% h" W" O! x

3 E  V/ ^2 q6 C$ _/ K  `问题:
0 ]5 p2 ~. H$ q& ]( aAfter running the model for 10,000 days, what was the average number of loads in each process?
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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 arriving5 e, D  R7 \1 I7 ?) u
move into Q_wait /*Capacity is infinte*/# l, `* j9 O7 p% d
move into Q_process /*Single capacity*/
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! F; O3 ^. G1 L8 Q" euse R_A for n 60,10 min /*Resource A*/  c6 p! w; B  T

- G9 z8 y2 H- Z* Tsend to P_B
( J) ?' W1 {) U. S6 @end% z+ W( Q2 z& l

: ~$ T* k6 ]/ gP_B and P_C is similar: u* B& ?, B8 ~3 \7 |* ~+ n
triangular 30,60,90 min% X  m' ?5 O$ ~/ p/ K0 a; c/ I, z
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.
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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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