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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,
3 n% X1 v$ T, j  {( 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.0 G0 N2 z" ?- H2 x- _9 K
  Loads are processed by each operator for the following time:; \- ~5 H7 O# ?
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins./ b: s6 c4 k1 ~' r# y2 Z2 z3 O; Z, B
  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.
  l7 y& C$ U6 O. U  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
1 R. `  x. N1 DSend 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.& I( h9 c5 {& i% v0 A

7 F' M: {0 \" [6 N0 Q+ s问题:$ [1 Y4 W. _0 g  ?& ?; n
After running the model for 10,000 days, what was the average number of loads in each process?6 Q# K; k4 p  k' ]. d
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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% w3 ~! w) a: Z# M
move into Q_wait /*Capacity is infinte*/% t5 J2 c$ x+ @- v/ e- n
move into Q_process /*Single capacity*/  }4 M9 n; u! ~

4 a, S  Q* L9 buse R_A for n 60,10 min /*Resource A*/( Z$ w* {% }) P. I5 `! f  a

  r" c8 ^$ u' D/ ?7 T3 {+ Osend to P_B
7 L- }3 f/ F0 V2 j8 p' A" |end
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+ c6 y4 K4 G* T! {  }P_B and P_C is similar
+ h) }: G6 s* g, u1 k0 ctriangular 30,60,90 min
. g8 a; @+ j. }u 60,30 min
9 {  ~/ L6 x2 ^6 f5 n
! Q& M/ v( h/ y" Z$ |' ^& d/ h6 M5 F5 ?3 g! a9 Y$ b
in P_C, you need to send to die.
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3 L: R) }$ j, ^4 c0 H8 oThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.1 k$ ^1 u& J# G' F) e0 U7 U! c% d

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# J7 r+ C4 t$ x" s$ x+ _! j3 iRemember 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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