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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,
+ X* z$ U9 p8 C# F+ [9 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.
" J, v: Q  _8 r- r1 g  Loads are processed by each operator for the following time:/ {6 ^$ d/ x" H+ S: s
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.$ t, @7 w3 W4 }) y& t7 \
  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.: k  T' ]3 \6 ?+ z) r1 o
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
  C- d, U5 V3 g6 ISend 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.( }5 p9 u. r3 t, \  g/ h% ?! Q( }

0 \' E4 z. t5 M; b问题:
: N+ E+ k$ ]" SAfter running the model for 10,000 days, what was the average number of loads in each process?3 y3 v* B) b5 V4 Z& @

- Q- l( Y, z/ V# p不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving  L+ \. d5 K& I
move into Q_wait /*Capacity is infinte*/6 N8 {: W/ a, p  X  w' ~- I. n" e
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/6 l" D8 @4 m6 b* L( b

% B1 a7 m/ s$ ^6 osend to P_B+ z9 F7 o/ t7 P! d9 }5 w( i
end
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7 E* {3 @' [* Q; p, `" c+ w- c8 tP_B and P_C is similar; p! J" M( C% g) g$ ?7 }5 l
triangular 30,60,90 min
8 `+ _7 F) Y+ u# u& Zu 60,30 min- m! o! D1 w; U5 o6 o; n$ J" Z$ ~
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in P_C, you need to send to die.3 `  N5 J5 n9 g9 Y, o7 i
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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." Q0 E/ W  P  }9 t" z% T
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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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