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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,
9 @$ W% @: `7 y' G! L1 s  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., w. ^# D' {1 {$ M- X+ n% g
  Loads are processed by each operator for the following time:
$ S8 x$ }5 L! p- q7 C0 f, v  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
. g& n+ }0 {) u9 f" a( d6 I: f  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.! l3 ?+ I  ^3 Y. D
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ C% J; w+ Y! 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.+ ^( h5 ?5 l0 k

0 w3 t9 t+ {; k$ x问题:( C# g0 P( G; p0 \
After running the model for 10,000 days, what was the average number of loads in each process?, l" }' T8 e3 B6 l/ B, I2 j
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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
" [9 f: c% ]0 j: P/ ?move into Q_wait /*Capacity is infinte*/
" R1 b" H& `! I9 rmove into Q_process /*Single capacity*/+ G7 A; L. C" }0 C

1 x& t' K/ H! U: ~use R_A for n 60,10 min /*Resource A*/+ h/ Y" ]# W5 `) v

" K8 N7 r' f! C1 `send to P_B
8 y  b; V* P1 E8 Gend( C9 A. V. A) {; ?
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P_B and P_C is similar
+ H+ D8 Z& M; `% B) W& G- ctriangular 30,60,90 min
5 h7 h2 A/ T9 l3 {8 ]: ^" b9 k3 cu 60,30 min5 T; Q, L! T% O
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in P_C, you need to send to die.! k4 l1 a0 T0 g( s

% c7 m$ Z, \/ fThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.3 h+ c/ G& ~! M6 r8 g

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: [9 n7 b) R! FRemember 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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