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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,3 x/ m4 _  {# M) s/ p1 z5 d
  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.
2 E! I# U, z; w7 |' J7 p  Loads are processed by each operator for the following time:; W" p; m3 t7 k6 c
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
/ w& S! M  e( @$ _" d  d& d/ k; j4 p) H  J  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.
' p2 m; h" h# v% p& D( l: ?  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.! _$ ?0 ?/ v* ?% L
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.% g/ `% T8 V/ T$ I. E; {9 i) u

1 Y& y* z0 @0 p/ H问题:; x5 I  f% A  a2 X8 O) n
After running the model for 10,000 days, what was the average number of loads in each process?  d+ {. m8 d0 a2 D$ d9 P5 d& X0 F

6 A% U* G8 P( F1 J不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
! h! ^+ F) ?) wmove into Q_wait /*Capacity is infinte*/! M/ t! {3 I% ]1 F2 ~1 N$ S
move into Q_process /*Single capacity*/, c7 e* H* k4 o; A6 F$ r

& j1 a3 ^. m- W# t9 U) d3 D! N' ]$ O0 puse R_A for n 60,10 min /*Resource A*/) ^3 }1 q; u, y; c. X6 `1 t  V* @
9 A! s, k5 A) r, E0 F* F- K
send to P_B0 |  Z2 p- J- i/ B
end8 J! G9 k: ?, ~7 b. j1 R$ F0 R

; F$ o* I- V$ E* ?# EP_B and P_C is similar
9 V/ O$ o1 H  e7 t5 Xtriangular 30,60,90 min* n3 o; P( [2 n
u 60,30 min, P4 o: q0 Y7 K0 K9 R  d
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- V% {2 n$ [! i/ P, J/ lin P_C, you need to send to die.1 W& ?2 P; `" l4 H
7 N- S3 s$ D: l  n' ?  z
Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days./ s" K6 q- |% K1 j

' ]8 Q' r8 p+ V. S: y- g7 f
7 m7 _" B2 Y" }9 ?Remember 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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