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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,
: ]: y$ p" V, {" q  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.
% P1 J. G7 t" O& S: s  Loads are processed by each operator for the following time:) y0 j/ h- H$ D
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.& Y, o/ e* n! D0 ?" {  S
  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.1 `' F7 ?$ n: o% b
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.( \1 }1 ~( p% w& U' s1 Z( j
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.8 v, t4 C: p# ~3 Z! c1 S' ?8 x8 n

# L, f3 _! r; V: X/ m问题:' z( ~" l3 v  Y2 T! F: K" z! e
After running the model for 10,000 days, what was the average number of loads in each process?
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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, q7 Q7 {7 k" [* V) f
move into Q_wait /*Capacity is infinte*/
% R! c" |" n6 @+ _& e) ^2 Bmove into Q_process /*Single capacity*/9 s! [. z) M9 \4 C: U& w

1 k5 `6 f7 j& Q) @2 {- Z0 {use R_A for n 60,10 min /*Resource A*/% e5 i7 v1 C! M+ K* J& U

1 t  T3 a" m9 z, Bsend to P_B
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$ d) d5 ?  t$ D9 ]P_B and P_C is similar
. k$ l; k  \! R5 ~2 ?triangular 30,60,90 min5 D7 O0 p3 I$ H/ n( K
u 60,30 min; `" b" a" Z6 E; O# q: e/ Y% x6 ?

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in P_C, you need to send to die.' h5 j' B" \# d3 f
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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.
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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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