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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,# @0 Q. C; }4 Q/ }8 P( A* n
  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.6 J: `* l4 z1 @# y0 b8 X
  Loads are processed by each operator for the following time:8 a& U6 `$ ~  w% o0 q) t: t/ ?) s& `
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.% X( s0 w9 A7 K% q* l' g0 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.
/ c9 \3 ?% U3 ]  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
( d0 Q$ n, V* U& x3 g6 BSend 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:
/ e" a, a) l" c8 b1 a/ c- v# aAfter running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
0 _5 C, T  Q# l2 I' {# Z4 [9 F; bmove into Q_wait /*Capacity is infinte*/
  N2 R  T+ V' n8 V0 z+ s" Q3 Zmove into Q_process /*Single capacity*/# ?( K) j4 K/ I+ d, g

0 Z7 r: p4 i9 m6 h6 |use R_A for n 60,10 min /*Resource A*/2 w! g' K+ ?) D9 ~! k, z% F

5 h0 o# ~) K+ h" Psend to P_B! ~6 W$ R/ O8 W) Q8 F
end" w' a9 K( S4 \0 ^% R  g- d
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P_B and P_C is similar3 o; f0 @; C" I* J' \( [1 p
triangular 30,60,90 min! Y- o: X$ D+ n& S; J
u 60,30 min
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  p1 b1 M; ]4 jin P_C, you need to send to die.
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8 [3 c! I- s3 T  S, o( cThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.8 H2 V5 [0 T" p  D  Q& G  O; x

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% o* F1 @; ?% d/ vRemember 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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