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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,0 d3 B5 Z" ?3 v' u0 f
  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.
  C5 S" z3 V/ G' i2 o- w$ l; S  Loads are processed by each operator for the following time:
! j8 j) \1 r1 s# x  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
7 s5 L/ l! h/ z& c; t1 Q  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.
: j  e+ L% p' ]5 q: A+ G  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
5 u+ X: t2 t+ b* c6 BSend 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., R; p! i+ k5 Q) s" I
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问题:
) N- u, i: G+ QAfter running the model for 10,000 days, what was the average number of loads in each process?
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  L4 t. @) q' T' W5 K/ r不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving. d# y8 M; i8 O% j6 {) @9 [
move into Q_wait /*Capacity is infinte*/
1 t: s2 s5 f6 O* @8 T. M' k8 vmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/& }/ S* k% B$ e
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send to P_B
# Q* m3 k& q: ?end. L( t( g% S' G3 [! P* k1 ?, e( e

2 B! L! I- [. W( a# P9 g: H; ~4 Y; GP_B and P_C is similar
, \* S, X9 v1 k8 }' ?( P( n% a2 Ntriangular 30,60,90 min
" c1 q. @  a. i* i6 ^& n# [- ou 60,30 min
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in 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.' o. [& y" P5 o

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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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