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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,
, o  m5 U; n4 F/ z/ ^4 W0 E. v2 S  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.. k8 t1 _' i$ m2 }4 K$ |2 l% ^6 q
  Loads are processed by each operator for the following time:( ~/ W9 f0 Z' N+ U
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.6 W+ U8 I+ @% o) W: G
  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.. C! T$ K/ h, R! [6 y/ S2 ^  k0 I6 O
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.* G- W* t2 t1 W3 L! _0 M' Q: c& b
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.# ?' e2 z% w; p) K% ]7 G3 K, M

; v& W6 x6 ]" y1 N7 w1 k- {" e+ G7 @问题:
* ^* B- r# N, H2 O5 ?3 k) JAfter running the model for 10,000 days, what was the average number of loads in each process?
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9 E- G; R% ?6 x不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving8 T# f8 ]2 T( b" G; r
move into Q_wait /*Capacity is infinte*/) Q/ j9 ?! x) F6 a! d5 u
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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7 D  x8 l3 H. y1 e3 ~0 x1 L" u' ssend to P_B/ @) ^% ?' I) ?! d% W+ ~$ V
end' K6 r5 r- M4 u

( e' Z! o- U' T1 z3 GP_B and P_C is similar, L# C$ f6 b4 O/ ?& L2 a% a0 I
triangular 30,60,90 min9 Q: h! u& B8 Z2 ^& ^9 ]
u 60,30 min
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in P_C, you need to send to die.3 `3 s5 a& W# S

  S0 h) \/ B) ]. xThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.1 Q& z' P/ {3 V& x9 f# U" y' }' I

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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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