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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,
4 h+ N' I8 T: f) Z. Q  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) ^( P! |: b: p  Loads are processed by each operator for the following time:/ {' c3 m) H+ B( S# B1 b
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
) o; |9 H! V1 P1 Q  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.$ F5 w9 v; L, b; L5 c
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
2 _* n; U7 W6 _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.# ?( V9 t1 z$ T% q+ W

. K- T' Z/ r1 y8 A' t问题:9 h2 O7 Y% V* R- e4 k+ W
After running the model for 10,000 days, what was the average number of loads in each process?0 a2 n2 Z" i) ^' Z/ r8 [0 H5 p

* n) h  W+ ^. B! U; S8 Q5 D不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving8 E" _7 F; h0 U) N8 g4 X( V
move into Q_wait /*Capacity is infinte*/- I. |, w% w+ V, S# Q, [
move into Q_process /*Single capacity*/5 ?. o$ |7 Q5 w
0 i9 E4 G. n  ?
use R_A for n 60,10 min /*Resource A*// C8 [6 _% L/ c! t- R4 Q! _, S

$ X( |  K$ U5 n  b, E% fsend to P_B1 V3 ~# U! P& D" j8 x8 m/ h4 G! M
end
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P_B and P_C is similar) r1 K- m& b1 l" ]' R& b. C$ \
triangular 30,60,90 min
1 ]7 r+ C0 y4 C1 R& _u 60,30 min  f, _, q. C  K) G2 e4 Z$ F% d

& f+ j3 _( C) w7 D
& {9 c) z: a, N3 Y9 i9 |" gin P_C, you need to send to die.: t/ Y9 _; M6 W" i. f1 W' l
" q0 F' I) W, }' s# g$ P
Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.9 z5 Z4 k: S: X
0 Y/ c6 o6 n; w; l( ]3 Q

! F# c2 U) R6 ~7 zRemember 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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