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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 v* ^* F' @- f) C9 J! O
  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./ O' ?  h6 \. p9 A; ?! g, ?
  Loads are processed by each operator for the following time:9 u( @5 ~$ v" Q
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.* ^4 K, G$ m7 v0 ~# L
  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.
* `" w6 |1 j# e; A, Z" n/ Y  Worker_C does the job in a uniformly distributed time between 30 and 90 mins." A& w  p6 G9 t8 `
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.1 h# m# F6 A, a+ I- B% [

4 D9 y# w5 r$ ]2 y1 O0 ?' x# H问题:
# N! e. r+ Q+ U& ^After running the model for 10,000 days, what was the average number of loads in each process?7 d* s* k, Y& @3 V  n
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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
3 X. H- C' Z; ^& Vmove into Q_wait /*Capacity is infinte*/
: x4 X9 L/ y( s3 Ymove into Q_process /*Single capacity*/
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( y/ w0 D' M' u2 i, [8 ]use R_A for n 60,10 min /*Resource A*/- {# \0 M' f6 s, e& [) i: e+ U

6 m1 K  h3 M; i6 Esend to P_B; a2 c; o5 ?! N
end0 |2 t: \6 H) a* C( u  J  U
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P_B and P_C is similar
6 \& ]% f6 d% X! @2 M! r0 y) ztriangular 30,60,90 min8 m$ @) T* R; c& T7 j
u 60,30 min2 |0 H+ v0 t% }8 k( M: T
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  F/ E, D+ Y+ O/ s+ m; {& Sin P_C, you need to send to die.3 I1 \5 p$ h! o+ |
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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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9 r- x0 P; B6 `5 [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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