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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,
! m; ]& r+ k, 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.
" v$ S) {. \9 r4 ^- y$ v7 d  Loads are processed by each operator for the following time:
# x# c" Y+ ^/ g) @  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
! p! O% ?( v2 }+ }  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.
, h% ?+ l: p4 m9 a& f  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.1 F" F% ^  P% t, X" 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.  x& n7 Y' J7 ~3 }$ R
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问题:+ g  w" t: W" I8 k
After running the model for 10,000 days, what was the average number of loads in each process?
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4 N3 G, K" f0 W5 V7 z1 O不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
+ x, {; y0 V; Kmove into Q_wait /*Capacity is infinte*/
& ?/ S$ X% W1 g3 J; {; `/ Imove into Q_process /*Single capacity*/
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3 @2 T9 ?' E( L) Puse R_A for n 60,10 min /*Resource A*/
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send to P_B0 b2 q9 z- B+ d( K- X
end
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P_B and P_C is similar. w6 R" L8 _0 ]) E7 f) p$ ?9 Q
triangular 30,60,90 min; F+ s) m9 j0 I7 m& T& B( A
u 60,30 min, h, J  @; `% H2 ]
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in P_C, you need to send to die.
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; x) z+ G9 I$ L9 a% `Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.' q: K, [" B6 X, M, M  v7 O* u
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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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