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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,: X: u4 W0 y  x6 R
  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.
! Y* p& n/ ]/ Y) N1 j0 u8 R  Loads are processed by each operator for the following time:% T+ y& v( h# e$ h& |
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.% C; M" o" B, {9 M+ W3 A
  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.3 u* j; y0 `7 x  d+ x1 q6 z
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins., B8 }5 r6 ^6 A! m/ v
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.. A0 a7 M" z7 N; R, N

  o( f8 C8 h' f9 n9 n' |问题:; N) L2 [% L# K  v
After running the model for 10,000 days, what was the average number of loads in each process?+ I8 e6 A& n& [$ ?" U
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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
+ _: M  L# L0 Y$ Imove into Q_wait /*Capacity is infinte*// O; l6 x* J/ }5 g" c
move into Q_process /*Single capacity*// @) x" ]& u2 A$ t* o
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
' ~# N; R: Y/ ~; K5 g, w4 Dend( Y+ R" p( V7 H
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P_B and P_C is similar
1 K" Z/ ^) S5 |. ?5 B* `9 i  |triangular 30,60,90 min% d% W% ]& m( M* i/ C2 B" g
u 60,30 min
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in P_C, you need to send to die.
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; Z" H0 ~; n* z9 m5 R! bThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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