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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,
* p6 e! A% Q3 E7 N# U- L  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.& _. q$ |' g0 O8 d( a
  Loads are processed by each operator for the following time:# s+ o+ b  {( s* f
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
* q7 ~( Y, D8 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 \  O- c3 V  l; @3 F! @
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
7 J, d2 m, 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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问题:( \, ?! I* E* F2 U0 g
After 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! f" H4 R6 w" j6 C# Y5 s6 k
move into Q_wait /*Capacity is infinte*/
/ [2 D" i3 ^1 Dmove into Q_process /*Single capacity*/
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/ e+ w; r$ }' _: Y1 b& z. O# Tuse R_A for n 60,10 min /*Resource A*/
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send to P_B
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, \3 S0 ]. c, Z: HP_B and P_C is similar) P) `  L$ B4 l1 z, z$ `. a
triangular 30,60,90 min
/ L* t: _; |& Uu 60,30 min) ]% B- D7 D0 }1 L% P  N$ W6 t& ~
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9 ]2 I; r! ?0 v7 R( s6 r  r8 [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.
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$ g" z! f) S5 Q7 u& z# rRemember 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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