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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,( D2 B% V+ r' u  K
  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.* c- B; J& u! x9 Q* Y% A
  Loads are processed by each operator for the following time:( V" y$ K$ D! w, b- e% V# z
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
; J, Q0 n$ n/ _/ J  v  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.
0 V3 ~. M  m- c$ K; P8 e  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
" d" H2 o: E) YSend 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.
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问题:" F% \9 n/ y8 c" K* L/ @! r
After running the model for 10,000 days, what was the average number of loads in each process?4 C$ @3 l' o. L( A6 H1 }
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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
+ Z# P% A4 _: nmove into Q_wait /*Capacity is infinte*/
7 F7 E+ k2 T, T8 |8 G0 y4 g0 a* Pmove into Q_process /*Single capacity*/. S1 N3 k+ U( D8 J2 L

' m4 y' _8 Y: R! R$ ruse R_A for n 60,10 min /*Resource A*/
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9 q" S4 A' F4 L) {+ R! isend to P_B
; e! f9 s2 E, j  \& }4 _, }  eend
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P_B and P_C is similar
9 X7 S# W  O* h5 \3 ~triangular 30,60,90 min
$ M3 P6 s. P% t" M/ l5 ru 60,30 min
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* D9 V1 M  c) h, s8 k- B, d. ]in P_C, you need to send to die.5 z7 O( P7 q1 o$ |" D
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.; @& f9 s4 u, N  [+ s( C# \/ a/ c. @5 N

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1 ~0 g, l* e# a4 j) I% aRemember 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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