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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,- l* W1 j% O2 ^7 e+ w; 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.
1 |* @1 E7 k0 R- }  Loads are processed by each operator for the following time:
& {; F% |; k& b0 O9 @8 D5 W/ C  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
- j* x0 Z; M1 f- g6 {2 y  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.! ]6 R0 V; z' L' G7 {; x6 r
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
, s( ?& ?& v) Q% }2 S4 z6 iSend 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.! x* K5 V2 e5 K3 ~1 F, Y, k
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问题:3 [4 v' \3 u3 ^5 m: Q+ O
After running the model for 10,000 days, what was the average number of loads in each process?* S1 a* k+ G% m% J5 B) e4 u

- l6 V  p: O  F! e9 w不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
9 w# k* g1 y0 ]7 }/ c1 Jmove into Q_wait /*Capacity is infinte*/
- y% ~% c8 o, w' T6 y' Q5 ]move into Q_process /*Single capacity*/
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5 |$ l) q" ]0 x) K/ g, Fuse R_A for n 60,10 min /*Resource A*/5 w, y! n* a/ S! B# l

* ^9 f' F7 ^6 bsend to P_B' y6 A% T. ~0 d& {, p+ n7 s! n
end
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& \8 Q) h3 {$ M! h2 R4 s$ y$ D8 DP_B and P_C is similar
/ b' t& S4 v) p( U6 Dtriangular 30,60,90 min$ K$ G1 k' b( o' L0 ]5 v
u 60,30 min
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in P_C, you need to send to die.
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( G& v' A  k/ ~8 M) WThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.% n) O: Y6 v- r3 P+ C

( I+ a) V" z! ?
. F! T  C% v1 A8 [/ h/ B: g$ x6 RRemember 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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