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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,
  F' F3 m, j/ m5 D8 s/ e  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.
; S( Y6 N! R* m( m3 ^  Loads are processed by each operator for the following time:
9 i0 `1 A2 s$ B' j+ g& ?) u1 I6 Q  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.+ G7 ]  Z0 A5 U
  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 V+ F1 M1 ~/ R; K4 I! X
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.! _, E( B8 F! S- b8 v" ?" 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.
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, e* o' @3 F3 h5 @3 k+ D问题:, {) ^8 r8 c$ C8 q: B: Q: m
After running the model for 10,000 days, what was the average number of loads in each process?! p$ d& `" d2 `! z$ r/ g0 j

4 L% _& V) Y7 A  P- G& D9 n不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving+ c7 e  R% r  y
move into Q_wait /*Capacity is infinte*/6 y" ^: y1 f3 {
move into Q_process /*Single capacity*/7 H$ p8 t2 o* Q6 w4 \6 }+ O! F
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use R_A for n 60,10 min /*Resource A*/
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send to P_B) v$ N8 C. a# s5 ~$ p8 a
end
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. O% s( D  K0 j0 w8 h% l, |/ ~P_B and P_C is similar
- Z: y3 k( w# z8 Btriangular 30,60,90 min) a7 ]. ]' E1 q) U3 D  D: _7 U$ O
u 60,30 min7 T: _/ Z' y; m9 k/ X

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in P_C, you need to send to die.
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0 Q6 Q7 N- Q! C, o5 d: C7 rThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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+ H: g, u3 E4 oRemember 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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