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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,
/ Y+ N" e! K9 j  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.- _) c4 A! n% u3 \' {/ s- T
  Loads are processed by each operator for the following time:
* C% G: Z% q' T. L  A  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.+ w3 N0 H6 o* w# l0 w! C4 E
  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.0 B" F- H) Z" t) K4 n& L
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
8 K7 k: N+ w4 r/ Y9 u; I& {( Q0 DSend 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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4 E4 r! T  `% O6 z5 E8 S' G问题:
9 C8 z" k4 O$ b' `, q& HAfter running the model for 10,000 days, what was the average number of loads in each process?* j5 I8 q; g' x  ~3 p; M
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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# ]1 W) J/ J$ B+ N, n
move into Q_wait /*Capacity is infinte*/8 s& S. g8 z6 X: n8 W
move into Q_process /*Single capacity*/
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# e4 J' w# j' B2 g8 s8 z7 [: vuse R_A for n 60,10 min /*Resource A*/
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* e6 b  T0 r% s4 v' _0 vsend to P_B: j$ q4 A2 c; e3 u$ j  M
end6 j* R/ S7 u" ]  r' R/ h3 w
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P_B and P_C is similar
) d  n2 ^# h+ r% O6 B7 H( O: `triangular 30,60,90 min
: w8 B/ @# U+ [$ Q- Yu 60,30 min
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in P_C, you need to send to die.& S1 J' J- k1 w% X" X8 I0 [
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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, W/ y3 _& c7 J) PRemember 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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