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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,
( A, Y, r  a# {& [5 |, e  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.
# y, R: ]6 u) T; d. M" R- v7 F  Loads are processed by each operator for the following time:) Y$ H8 |( C& v( ^" E
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
0 X1 N" }# d0 t  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.
4 O7 e/ N! @1 O5 Y" h& U  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
: v3 Q# [! @. [" _$ K3 w8 ^4 E% R; rSend 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.0 {- d0 E1 w. |: D
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问题:5 Y1 v5 p' q! R: \- O
After running the model for 10,000 days, what was the average number of loads in each process?$ m" [) M' [9 L7 e
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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
7 q0 Y* M7 d7 ?7 Smove into Q_wait /*Capacity is infinte*/
- h$ d" T. L( dmove into Q_process /*Single capacity*/9 W2 Y$ D/ t. k
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use R_A for n 60,10 min /*Resource A*/
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9 k. ], i# h) F7 rsend to P_B+ Y  {* x* D6 V$ z4 g9 \! z6 t
end8 j' g' O) P8 k
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P_B and P_C is similar
- W9 P5 e3 j! `/ S0 x, P  Jtriangular 30,60,90 min3 a) w6 K: A0 w; L9 y6 O
u 60,30 min5 [3 q+ `4 D3 ]4 r. z  a
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5 {4 R! W" m+ B
in P_C, you need to send to die.
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" A5 `( c* b" C) Y' \( hThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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# i: H4 V; b$ u1 b4 }3 u' D: m# N5 P# }9 ]9 ~/ i, D0 m9 ?
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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