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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,
. W$ z4 @& |: ^4 H& |) 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.* }1 o, K2 f; ]4 n
  Loads are processed by each operator for the following time:) c# E$ S6 q) c' f7 G
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.9 M8 W4 M$ }. ]" h: @
  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.
* P2 B9 o1 X! l) S  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.7 ^" x& W/ g/ q3 {
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., |$ t6 X* p% a' F/ A% B1 M* Q

; o  G4 O  m" h2 \# b0 Y/ k问题:
! E& f& F* i9 ]) x' i7 pAfter running the model for 10,000 days, what was the average number of loads in each process?+ f: R# i  [* J8 l7 m4 _2 J

; V* x3 A$ x& @+ O( m8 c不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving+ E  R: M" q8 ?4 e% Z& j% `
move into Q_wait /*Capacity is infinte*/
2 y# @; e& }! y, @move into Q_process /*Single capacity*/
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4 K  T% B" p" euse R_A for n 60,10 min /*Resource A*/; X8 |2 U/ d6 S3 n
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send to P_B
% Y7 O  M4 @4 V5 C: kend
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8 j* ?9 [2 l/ E; DP_B and P_C is similar
; C1 l) z' \. x6 `8 rtriangular 30,60,90 min
% Y) d3 T. F1 f( n" W6 iu 60,30 min
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in P_C, you need to send to die.( S2 N4 Z+ g3 V! h+ f6 W

9 U  l2 a' d8 D! N6 h9 |Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.( ~5 U( K! ^  R' P4 L8 O

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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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