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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," I( I$ `, H4 m/ h7 ~" N& F) p" ]
  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.2 I. s* {+ Z. A* F' n$ f
  Loads are processed by each operator for the following time:, W3 o2 B! j; h- Q
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.5 G9 A! V! M! x# }2 i: }
  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.% d* n9 j$ n2 r: R7 {' t% u
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.4 m1 m% c" S& y1 a$ G
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.! l/ O; Y- y1 q! {6 M' c/ C% S" K- y

; D9 d: x9 U6 j+ F1 }0 U8 C问题:
. H, s( w" m" q' S7 ?+ xAfter running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
- J3 O3 J1 K5 d! m* W7 _# }move into Q_wait /*Capacity is infinte*/
/ E6 x+ z# w1 ?9 T! P, D6 Fmove into Q_process /*Single capacity*/
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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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& u0 |, [! A0 GP_B and P_C is similar4 ?) H9 e# X4 L, F4 L! A. k9 A2 M
triangular 30,60,90 min/ \" i7 y+ }1 }% e5 o
u 60,30 min( @' ^- n* L2 o' _  P

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in P_C, you need to send to die.2 h& T; _: P; ^+ D/ v$ E
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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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