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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,
: L$ c/ V, n' B, f% x. m; S4 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.
1 h# D% l: [& Y- y2 Y6 a8 K  Loads are processed by each operator for the following time:
" i2 i" C  M# J0 e; a1 P( W. }1 Q  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
+ W( ~; c' I/ T% N  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.! R4 }8 [$ h2 U8 a$ z+ O
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
6 r  B5 i" U1 |7 X, R' R$ i% vSend 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." E/ I% g3 u; z0 I# m$ e; y( D

1 b- D1 \3 \4 V+ q; @2 R! c问题:
. D% k4 [8 U! WAfter 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 arriving7 v2 b3 @% S7 j5 y# s& Q
move into Q_wait /*Capacity is infinte*/
$ T+ H# l$ W6 u* ymove into Q_process /*Single capacity*/+ J9 d/ \0 W" n# Q9 J. m

' y$ H3 h* u' F$ D5 e5 Kuse R_A for n 60,10 min /*Resource A*/$ g3 f, ]4 X7 h" g
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send to P_B
- Q" |  {" o- _& ~0 s! b$ j+ U+ lend
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& N$ ?. |; z* p2 K% [# M7 \P_B and P_C is similar) e. f; V6 L* q0 [2 v! ~8 q% S  X7 c) W
triangular 30,60,90 min
- G4 D' q" e1 m- ?6 X6 Bu 60,30 min
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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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$ d0 n. D% x+ \3 Q  t9 KRemember 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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