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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,
: b0 |1 u% d2 a4 Y( U' g) W; s4 M  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.
- b+ p4 E% }7 q3 t7 \: ]  Loads are processed by each operator for the following time:0 P) U; L5 y3 S# r2 Y, d8 J/ d
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.0 O# N4 o$ t2 M
  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.
/ \& O4 f- X# @' O  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.2 N1 Q( ^$ Q# J* v: s. C% Q$ g% x
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.6 Z6 ]$ I; T7 b& {- x

' J7 J/ b8 F* U5 U! \: R2 m4 W% n( i问题:8 e( m  }. J" `
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
* \! ~$ z. L% kmove into Q_wait /*Capacity is infinte*/9 C) @. y$ F3 M* k7 n
move into Q_process /*Single capacity*/* w2 X3 D0 d* I$ z
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use R_A for n 60,10 min /*Resource A*/
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send to P_B) y, Q$ \( t3 B, x
end4 c; C7 w$ X# r) R0 ^, N0 X
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P_B and P_C is similar
" Q' Y* \0 }, c& o  Y- X! N6 \triangular 30,60,90 min1 g7 Q7 B' y8 J/ Q/ N- }% n
u 60,30 min+ l% [3 \- N2 g

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in P_C, you need to send to die.1 |! w" @7 {  i9 j

$ @. B" x! G% g1 [2 }4 BThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.4 Q2 K* ?/ `# h7 [" q, c( |
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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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