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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,) F) ?! p% w7 u+ ]7 g/ J5 K1 |) 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.( f6 D7 l8 n) z
  Loads are processed by each operator for the following time:
8 R. u* a5 L- d  S& [9 `  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.5 J" E- ^2 F+ {) U. S
  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.3 Y- p) M/ {3 L( s2 V
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.2 K( F) G( U# t/ l
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.
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2 e+ q* ]! J7 t1 T/ f3 K1 T问题:
+ x" w6 w: \0 ~  ]9 D1 a' [1 M" hAfter running the model for 10,000 days, what was the average number of loads in each process?
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+ J+ ~1 F, {& q* o/ p# I不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving5 y- \. Y6 G1 S
move into Q_wait /*Capacity is infinte*/
, G! |* c1 y8 b0 I# P% ]move into Q_process /*Single capacity*/1 W! \/ m6 F7 Z- D& t3 D- l
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use R_A for n 60,10 min /*Resource A*/+ x5 `1 t/ n. |2 `/ L$ U

, N  i7 Q$ ?6 Z$ A( qsend to P_B
  N8 Y" h1 ~* b- ~3 C0 i! K, |end
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- M0 B* ]) S, S, y, \" `P_B and P_C is similar; U# \+ `9 a6 w- e* t# D- f
triangular 30,60,90 min7 k; z# U- c! _7 {" Q
u 60,30 min
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- |) k$ n2 [0 D/ x$ p/ Ein P_C, you need to send to die.6 z& O) g- }( e$ L6 w3 D
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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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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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