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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,
+ W+ p& M7 j0 Y# k. 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.; q* K9 d2 \' T, o7 R/ q
  Loads are processed by each operator for the following time:- ^: C8 _2 L9 ^& E- Y
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
4 g0 W/ [8 [0 g5 E  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.9 M* x% i: P6 r
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.( z2 K9 Z* c. i
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.9 ^  l, F: B; Z1 a8 R/ T

6 M# r) C3 j: J* O4 g/ g7 h问题:- m3 d# ]1 u+ S* ]) o& U( h8 g* T1 \/ P
After 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 arriving* S/ Q8 K9 C% d5 [6 y. T% R4 k
move into Q_wait /*Capacity is infinte*/& C- T9 X. q$ j5 |
move into Q_process /*Single capacity*/! E! _8 C: e) M/ G; P% i/ I& e* ~

! C# b2 h7 }2 P! uuse R_A for n 60,10 min /*Resource A*/
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send to P_B0 t  l' Y/ u# I: p* j: d* `+ e
end
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P_B and P_C is similar6 r+ B. }" m4 \
triangular 30,60,90 min) M" U2 A, l4 d6 n4 z/ {6 ^
u 60,30 min
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in P_C, you need to send to die.9 Q# o# }+ }6 _( E
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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.( v% {* j6 Z/ z# M+ y7 [% `

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; l, d1 ^5 m4 z$ M! U% |* JRemember 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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