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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,1 J# l6 ?4 A) u' v* |
  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.( H$ t3 f  S) |
  Loads are processed by each operator for the following time:( w/ N4 W; A9 y5 }' K
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
, d1 O$ X6 |! e' @" u  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.
; h( O+ |& G  [# B& f! `  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.4 T/ s/ D* k2 m
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.
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问题:: B  w* f1 C& }6 J' P
After running the model for 10,000 days, what was the average number of loads in each process?$ p& m& C/ X  L+ C* u$ ~3 Z% x
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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
( B; X: c# {  M* zmove into Q_wait /*Capacity is infinte*/
5 ^: \! C; {, Z: D" O3 }move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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/ p& C, S; s2 |, m6 G+ `4 X8 m0 ^+ qsend to P_B" k2 t' f" I+ N, ]9 z; N0 x
end, |$ ]5 v8 A. @2 @2 b2 ]

# g) `, v) T- w/ H4 a, bP_B and P_C is similar
! h3 c  S% b, @+ {5 G' b) z) |triangular 30,60,90 min1 J$ g" j4 Y5 J3 G& O. |; L
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.* G' C& m; ~% m! Y. C8 Y
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0 F9 ~$ {$ V, \4 v  Q- Z' TRemember 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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