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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,
9 k& }  b* P. d( {  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.& R$ {# U0 L% |* ^- v
  Loads are processed by each operator for the following time:' ~4 U' R! G+ J, ~, }4 F
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
2 h8 r! r/ w% `: O) {  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.+ [7 V1 h( ^% I* e7 I1 c6 @
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
4 Z% h; J. B, T/ L7 G, gSend 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.6 ~2 @. ^4 H+ q: T. |! E7 ~2 q
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问题:( T9 t; B. o- n3 B) d
After 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
) L3 l/ N( Q: \/ O: U; h" K- T, T  Bmove into Q_wait /*Capacity is infinte*/' A7 @* y8 X' Q* \7 x( G4 e
move 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_B2 L/ p5 e$ K0 K; Y, W$ _9 G' x' [
end7 w- @; q( P0 G' n1 ~) g( F, z

' _4 c* z2 d2 |P_B and P_C is similar0 e6 [& m' A! d& U$ v% J0 `
triangular 30,60,90 min
" J9 L. O6 P1 y4 {2 B. X+ au 60,30 min: l, v0 X/ p7 s) O4 s

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$ H8 Z* F; d% u, p! a' }* K+ V1 Nin 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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. ~6 O' |& p, i) ?" F# URemember 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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