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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,! O" [% @2 ^0 A# s1 c
  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.
4 x+ M7 P4 `( @" Q+ p) i- I  Loads are processed by each operator for the following time:
. [" i' [' ~" c, h! b9 l$ G, d  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.2 `2 m& K9 c" }% [- A0 E
  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 ~$ ~3 u' ]) e0 P  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ }; i2 x( y9 z) H6 ^1 X
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./ B+ _, p+ D; k8 I4 V) S9 `

" V% n& a* D. B; u问题:* q$ `1 D8 b3 G) p" c% P
After running the model for 10,000 days, what was the average number of loads in each process?6 ^0 P) A" P& @- U% p

) q" g# R- X  I6 _不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
' ^& V" U8 h" S+ \/ Bmove into Q_wait /*Capacity is infinte*/
1 C# n( v3 \% h% _1 P/ ?5 e7 rmove into Q_process /*Single capacity*/
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! }: W; }1 V0 e9 Ruse R_A for n 60,10 min /*Resource A*/2 q  A" @7 a3 v* ?! a# b% R

- i+ v, B& v9 D" `5 s' E) F/ [send to P_B
7 S7 e7 `  z# q5 _. ]) |/ R% Aend" s+ n$ ?" M9 ~9 y# J. l/ x
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P_B and P_C is similar
4 g! u: B3 U7 W1 vtriangular 30,60,90 min
  y; k* A; r9 T3 Fu 60,30 min
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in P_C, you need to send to die.. ]  ~3 ]3 w8 C$ V, E
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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.
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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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