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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,/ G' i8 j8 i% E4 w: ^2 x
  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.
$ d3 c2 X. {- {  Loads are processed by each operator for the following time:( D9 {: F: P! K- g) s
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins./ B1 G3 e/ s6 N6 m3 b5 C
  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.
7 n+ I+ F9 ]4 q$ v" c- z  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.3 s: y5 X( e+ t8 h3 h3 }' F; ]
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.
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# E% T% a) J% ~5 V2 G" P* N5 `问题:+ z8 m6 J; v# ?5 s: h9 R4 ~
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 arriving0 a: U: {* Z6 {, z6 z2 r. H% d
move into Q_wait /*Capacity is infinte*/
) Z9 u5 X7 H9 L/ d5 n" {0 W* O% Dmove into Q_process /*Single capacity*/' K* p2 l$ m2 N3 K" N

% B% C8 f' \' yuse R_A for n 60,10 min /*Resource A*/. Q  {7 X5 k5 A4 V1 ?: V

2 x$ j; k6 \) F7 `" X$ P* D7 bsend to P_B4 i# `: O9 k' i$ ?8 y) ]0 a' F
end
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3 R# n+ z0 [$ a! i- ?) S! nP_B and P_C is similar, }. Q+ L: F* B' l0 p# D
triangular 30,60,90 min0 Z# B/ A7 \  L4 M4 Y
u 60,30 min
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in P_C, you need to send to die.& z; q. ]  H; W) q' k" x7 o, F

  x1 N6 \: o% v1 tThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days." x1 Y0 t, V: j" N! X4 t
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  `8 D7 g' W, ^/ X! XRemember 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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