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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,
. y  v6 z! T) L" F! h) z4 m* o# q* W; 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.! r4 L+ _4 i: s
  Loads are processed by each operator for the following time:
8 A- y1 G! o2 q  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
  m: H% u+ ?7 l4 i. 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.0 x, }& Y0 n2 q/ @- }- c# W
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
" ?3 h2 k* c2 b3 }7 b$ l1 i) W: nSend 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.: T# X1 Z+ U3 B+ u1 p
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问题:
$ e/ v5 u9 F2 `0 o; g* F- VAfter 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 arriving
( b2 K; N; H6 _$ V% `move into Q_wait /*Capacity is infinte*/
( U; i, `: U; ]0 F! Tmove into Q_process /*Single capacity*/
; p( e2 {( \/ y4 ?
, ~' K/ n; ^3 l& m, M' cuse R_A for n 60,10 min /*Resource A*/$ E  |! o) }4 {$ E! T2 s7 r

$ y' _- W, K1 J7 B$ G6 ]- isend to P_B" T9 H8 D' e& A& B# ^  L0 `
end
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P_B and P_C is similar0 E2 _8 w; v$ X! z
triangular 30,60,90 min' v9 U4 g: N3 b$ Q
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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: [0 c1 ^0 |* I4 a" O. t  M2 U1 yRemember 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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