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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,
* n& ]% a1 }' n% m  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.
, g3 G0 m: ]4 y! E  Loads are processed by each operator for the following time:
# m% i( ]# T) P1 z  d; p  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
* A& |. f; }; B. }0 F% D  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.- M7 {9 u, s3 E2 P; F- \
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
, z) a- }, U& l$ G3 |" R2 H7 oSend 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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, S" E2 o7 M, e1 k" E问题:
- H# @2 G! ]- E+ H" V: oAfter running the model for 10,000 days, what was the average number of loads in each process?  E% y6 G2 v- B& ]! E% r
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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
* f( A2 I# z! ]7 }1 ^move into Q_wait /*Capacity is infinte*/- P3 v, n- }' e8 c
move into Q_process /*Single capacity*/
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0 `  x3 _2 R4 ause R_A for n 60,10 min /*Resource A*/
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send to P_B
; ?3 n- d0 i) Y  k' P& Aend; D4 T  k3 I) }8 t4 V5 P
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P_B and P_C is similar
0 `. F8 \4 L& m% e. ttriangular 30,60,90 min  K) C1 }  h3 g, T
u 60,30 min( z6 _2 V! s& u  b

0 A) X& \5 c- }- |# \$ z. ^3 e+ t! F! @9 U; D) p
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.1 z( \# c) M8 W' Y% M0 M' J* w
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( ?0 @5 H  l( XRemember 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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