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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,! j: z& O* k  }. X3 f  @
  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 ]9 _6 g# Y' b4 g! d2 B! B3 `  Loads are processed by each operator for the following time:
2 e9 a: Y2 h; r6 T) O( e  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.  v+ P4 o. _, D( o" B; n7 M
  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., I2 I4 W) S* y9 {+ e7 `# }
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.0 W+ ~# d* m7 q
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.
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: f% z8 }. r" l( q7 A问题:/ `# B- r' b/ G+ H" T
After running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
: D* s' o7 P( e# ^" j+ K& ~move into Q_wait /*Capacity is infinte*/: @; ~% G# @) g* j0 m2 n6 m3 Z, D8 e
move into Q_process /*Single capacity*/
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% `- l7 _" G& `; n; T1 xuse R_A for n 60,10 min /*Resource A*/
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send to P_B
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P_B and P_C is similar
/ ~4 ^3 O1 b: U0 T: Wtriangular 30,60,90 min2 V, T) r6 t5 Y9 \* G
u 60,30 min
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# C- b0 g8 z0 ]6 f! bin P_C, you need to send to die.2 T7 L  G/ d" |  g/ q
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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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5 p# [9 e+ X2 T# [& T1 {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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