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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,
& N0 G7 W8 H, S5 s* }2 a" `5 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.
. Z0 n9 L" i* \2 V' y7 S; l  Loads are processed by each operator for the following time:- i" b2 C$ a( k* D  W# H5 P# o  @" I
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.: p* D8 Q# Q2 x, ~
  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.5 m- c( Q2 i2 ]
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.: K- I9 e8 G8 b# k" Q* H% 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.
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. d' g' s* A/ Z0 `9 L) Y问题:
& ?" [, T( f' d2 v6 |* `) J9 MAfter 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, Q: {- k% J0 a7 c2 R
move into Q_wait /*Capacity is infinte*/+ R* C3 [9 S/ D: p' z; B5 Q+ I" b
move into Q_process /*Single capacity*/6 y. U, S: G0 _

' B. }  s  u" m! @" }4 Wuse R_A for n 60,10 min /*Resource A*/! }8 S. o) V8 m  b# c2 [# Y% H2 O7 K

" [; b' U5 Z$ ^. R/ |, P$ A6 {+ Isend to P_B% Z: `& m5 [9 J$ I, c6 u) f
end
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P_B and P_C is similar
  r9 Y; ^# R9 l' Otriangular 30,60,90 min6 q: E% K' W& g0 T9 j: [
u 60,30 min* @% O. J3 ]% `4 j6 d0 d9 r4 w

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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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+ v8 r! e9 v. s- g: u
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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