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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,9 i6 K0 G5 z2 T! 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.
- z( W  s1 I0 C  R* d4 n1 s/ H  Loads are processed by each operator for the following time:8 X2 y9 `  l- g
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
* h* M5 H. t& x: q  P) A! t, \  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.
7 _9 L2 e( ^/ S0 a' L6 ~: i4 Z3 g  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
# |, Q( }, I1 Q* k9 O5 [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.9 O) R  x% X3 f) X. H( Q% Y
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问题:3 v3 P% I! ~& n! M0 t" i) X- _
After running the model for 10,000 days, what was the average number of loads in each process?
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, a% @: x8 J! p1 |# b9 C不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving% ^' i4 S6 [: `* u5 L- m+ Q
move into Q_wait /*Capacity is infinte*/
" u" F8 ^8 C; t4 kmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/$ Z8 P/ a& U( o" T0 m6 p
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send to P_B
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P_B and P_C is similar0 L- L1 U" ^6 [2 Z) y
triangular 30,60,90 min
8 _* ^7 E0 ?( ju 60,30 min
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in P_C, you need to send to die.
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( h4 s: s( ^% K9 H: d3 D+ N" @, Z; R: OThen 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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