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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,/ X9 |7 ~' e: I
  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 T; W2 L5 ?& N; h' v9 \. A  Loads are processed by each operator for the following time:
# x0 J) G+ m* v) k  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
" z; l3 ~- _4 t* Z  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.
9 I1 h/ D5 n3 y9 j  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
/ R. H; }: u: D( f3 h. R" }  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.+ t0 i; t. T' ]* u

/ U# G) H5 ~) P7 I问题:5 d) r; T' z; M3 o. v& N& N5 f+ q
After running the model for 10,000 days, what was the average number of loads in each process?4 ~0 t. t9 U/ x$ b

! A6 v/ t! T# _) f& w不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
. f' L2 e9 `8 i: ]/ s  ?move into Q_wait /*Capacity is infinte*/' `! I" T  K% v9 T
move into Q_process /*Single capacity*/$ j2 e, q3 T4 J( t0 _) n

7 n% g8 P8 [/ D2 b7 m% Huse R_A for n 60,10 min /*Resource A*/# o" V% k8 l( U$ v9 I

) E! F" r0 c# B* |9 |! asend to P_B
, o* M- K7 v& o( c1 @6 a' Dend
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P_B and P_C is similar
0 a- n9 j1 }7 A* h' k2 Ytriangular 30,60,90 min
2 Y! e' j9 f9 Z- ku 60,30 min% ^1 `+ w# a2 l3 m& ^2 l

0 F# \4 v7 Q7 {1 O
. f; M* G0 S0 U9 \+ ?1 n8 gin P_C, you need to send to die.+ q+ C9 B" s4 C( N6 y7 H" ~! M
' M. @8 Z2 l/ P& h! b! V
Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
1 e% h0 O0 I! {1 F* B7 e, r" a4 m: Z2 [6 k+ O7 ^- ?

; W) N( |9 P  N; X! E- _; T, jRemember 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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