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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,
; @  ]* n1 P9 I5 I3 d& 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.  ?$ b7 c7 @! P  w# O  e- f3 M
  Loads are processed by each operator for the following time:5 S1 f; C# W0 I3 \' h
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
6 L! l4 H! p% }" 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.  ~/ h3 Y  S# w- F5 Z8 l+ g
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
9 |: @5 i+ T, N+ @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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. _# d" Q7 `4 j; U问题:
# i4 O' c1 U2 [) ?) Y6 QAfter running the model for 10,000 days, what was the average number of loads in each process?
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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
6 Y: `9 b7 D: T5 u; ~0 R; M0 Umove into Q_wait /*Capacity is infinte*/4 r6 J$ J% _: e5 Z2 U
move into Q_process /*Single capacity*/
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) J0 Z9 o5 ]; i/ x+ @use R_A for n 60,10 min /*Resource A*/9 E* m" ^( B/ a8 \

) m/ b  L( k2 f. k& `* dsend to P_B
' P5 f% Q0 Z  f" m, t% [end
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P_B and P_C is similar: l$ n8 P7 b2 N) j
triangular 30,60,90 min
2 c' ]" ]9 M4 A7 v6 Y4 a6 ]0 m4 `$ Ru 60,30 min
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in P_C, you need to send to die.& u9 e: Z: |& x4 H

2 f9 J/ Q5 t% P. ^" j  `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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