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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,3 A2 e& E8 N% Z6 ]/ F: n
  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.
) S( U; ^1 C  M9 ?  Loads are processed by each operator for the following time:8 m. L6 I9 r) ~+ p, V
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
- I$ u  b1 Q% |  Q2 O  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.
( n. A9 x, j: W2 k+ ^  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.& ^0 b9 w0 J( g' i3 N9 a) W
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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0 j9 h' F5 u9 L, h问题:
1 i1 m8 S( j) l- {, kAfter 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
  \: b( C: c' Tmove into Q_wait /*Capacity is infinte*/
# ]- q9 C0 R2 Rmove into Q_process /*Single capacity*/3 x% b% R, ?1 Q- f0 r/ {5 A

+ U) z  P+ ]/ ^use 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
6 H7 f( Y; B7 @! h( ltriangular 30,60,90 min
$ j' r" g; L7 d9 v, C* Nu 60,30 min
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in P_C, you need to send to die.
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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.- x" V- \9 _; O7 P

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# ^! y3 ~  l* a8 l! x9 s9 A* I" SRemember 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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