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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,
$ n) A% V" a7 l& I, o$ \; R  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.$ B& D8 I: y& V3 T9 \4 J5 ^; _5 a" U3 x
  Loads are processed by each operator for the following time:
. q) V7 f% O9 ?$ U; e6 w  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
. i7 T2 Y4 r! F' g+ B: C' I! I" B7 F  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.0 [8 H$ x: E- s- G9 u* p& B2 k1 B
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
; m) B; a9 e1 m1 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.+ J; w3 @3 \" n
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问题:6 l/ H+ W+ Z9 p6 Z
After running the model for 10,000 days, what was the average number of loads in each process?
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% l  ~4 O0 e( t. u0 @  z不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
5 {. O; k% Y, D4 U" H2 Smove into Q_wait /*Capacity is infinte*/
3 Z* N1 P. ^2 ^1 Bmove into Q_process /*Single capacity*/" @$ o1 {% s/ |0 Z2 t$ v

& ]4 m" x- |! ~4 b- J7 Q+ t" Tuse R_A for n 60,10 min /*Resource A*/0 P9 u1 B& d' h
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send to P_B7 u7 t' p2 C0 D& f( m
end  D; D- F7 N& d6 n. y% C2 [

7 [3 R, [& Y! l! }  cP_B and P_C is similar7 R7 `1 \# m! Z/ _# |! j  s9 S$ ^& L9 |
triangular 30,60,90 min/ s; g& m" i+ k) }3 q% Z
u 60,30 min
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. O% R$ R0 H2 X' B: ]in P_C, you need to send to die.
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" W8 p/ F3 k0 B2 J9 g; qThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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7 V6 `- I3 O0 }# w' v# |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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