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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,
  s/ e; V6 k6 d- W$ i. H% k  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.) [" P! w3 G: t* I' L# I9 F& g3 f
  Loads are processed by each operator for the following time:
$ K$ t7 M- ?# \$ h8 B: B  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
1 a; t1 K" F" }2 w9 ]+ n6 G/ s3 ^  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.3 Y  f9 U. U/ S
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
3 X5 d1 ^- |! i* pSend 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 w: f2 S1 O  Z: I/ r; }

$ o1 W, S- d* e# M+ B问题:
# I: t) q- ?4 s; {After running the model for 10,000 days, what was the average number of loads in each process?3 n( G3 N& E! h/ S- b, E$ i6 u& s

, e) f2 o# v5 V& Z& h8 L( T6 D不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving8 w" S0 j. ^2 r) f( c' a8 I# {
move into Q_wait /*Capacity is infinte*/
8 \. o, d1 s: g+ ]  r: J$ ~( Bmove into Q_process /*Single capacity*/6 o7 N, N# w! P5 H2 j9 ~+ F
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use R_A for n 60,10 min /*Resource A*/5 S- K1 x: c. \1 @# n
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send to P_B
" ^" b: Z, m- y. E' E) I# pend
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9 l7 q: ^) d, S; x* `. q* G& BP_B and P_C is similar7 }  S9 }* s* l5 T; \
triangular 30,60,90 min& Y$ F- e3 x, }
u 60,30 min  @1 Z: U% C$ ~& u8 ~; E8 q
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in P_C, you need to send to die.- z8 g9 \& f4 C: V% }

& A. c, h5 r5 s! u; s) [Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.. P( b3 c- O4 ^
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  I& X8 f; h% b# G: m0 Z
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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