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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* t+ O' Q0 y. B8 t3 ^
  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.
, i+ v# f; \- T) D$ s  Loads are processed by each operator for the following time:- ^; K, R6 w  Y9 J$ n# o/ G; M
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.6 v7 L2 q) V7 k2 L! c( K8 T) m
  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.
2 M6 X) q* @, J4 N3 w+ A  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
$ Y. h* W& S! w" R& W- [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.* d: E0 |+ T) E
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问题:8 I! a6 E' ]! F4 v" @; |# z4 |0 H
After running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
# a# I- K" |7 y* N1 @- Y% h/ T3 Rmove into Q_wait /*Capacity is infinte*/
( Q5 c+ T* ^' W  Mmove into Q_process /*Single capacity*/. D9 k7 u2 W& ]4 ^3 H8 l
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use R_A for n 60,10 min /*Resource A*/- T3 ?: G9 Q. y" w+ h7 ^

7 J+ m3 U1 K+ v  C2 D$ ysend to P_B
8 d) R: J0 @% X9 B2 ^7 w1 u" T, Uend+ v7 h/ _; `, H4 m* @# c# N

8 Y% n) @2 U! h( fP_B and P_C is similar
+ E/ \) T+ z$ }" Htriangular 30,60,90 min& c7 f0 u" y) C( R; v3 r1 b
u 60,30 min9 w, K4 S& P5 k  r
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9 Z( _4 a1 F- `/ }) K# P5 M9 g  yin P_C, you need to send to die.
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# O9 I/ v& F" q) ~% M% cThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.; K0 d, n, A# X* J6 O  z9 j! u% r
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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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