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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,
+ G0 B7 D5 z) f7 u9 u- ]  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.
3 U* i, S! m3 J1 J  Loads are processed by each operator for the following time:7 K% i6 X% H+ G( i1 w( X
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.$ r, E7 ]& M; n% b! F) r
  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.; j8 R( l  n! W3 ?5 D
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.' f  F4 M9 q# f' O2 ?! e
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.! z3 g3 l" r2 }& r

2 p7 F' u. z% o+ _8 Y问题:
; U; r0 z! M  t; _4 Q' y: |9 bAfter running the model for 10,000 days, what was the average number of loads in each process?( R: K/ |' d/ s7 b6 c" b4 B( O) z: q- f7 r
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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' b" f1 t2 w7 f; O1 B! J9 M
move into Q_wait /*Capacity is infinte*/
3 t1 w* L3 z. Vmove into Q_process /*Single capacity*/; @, W% u; h3 k9 _- L( J/ a
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use R_A for n 60,10 min /*Resource A*/
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+ r1 m" {7 |; jsend to P_B
2 G: c2 ]' G" L. W$ T" T2 f% Fend' Q; @4 J1 J# f1 M2 l

! Y/ l4 t! Z; d  Q- qP_B and P_C is similar* J% z" Q7 l/ B8 R7 _! f3 B( W# {
triangular 30,60,90 min- G% \* C  b/ f  V' l2 \6 u
u 60,30 min; c1 Q5 z2 m) f

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! r9 \1 W$ _* H4 Fin 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.  a6 w1 C- I/ X! D, k2 ?

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; w% p# i! e; o% `; c0 x" B: U2 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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