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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,. P! \5 e0 `% i; H) V; r
  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.
" _7 @! J6 E( W* y  Loads are processed by each operator for the following time:! g( ^5 Z! v% n# o; N. t$ \+ ]7 p4 Y: M
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
) f. L& j( p5 ^; r  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.6 K3 M% E& a' X
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.* c- ?+ S. u' u
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:1 g- l1 X5 A6 I* M! @6 C
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 arriving4 `! n: V/ P  [% C
move into Q_wait /*Capacity is infinte*/" B% Y5 d. L4 e6 @6 u
move into Q_process /*Single capacity*/$ y9 O+ A  j2 k, N* q0 ]
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use R_A for n 60,10 min /*Resource A*/4 M& i8 }5 [& t6 M
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send to P_B+ [, X$ }2 h. A, o
end' ?2 x6 U% Y  u
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P_B and P_C is similar7 N8 m( E9 k2 s5 e7 W
triangular 30,60,90 min
# u4 }# n) R9 B6 V" s0 @" fu 60,30 min* F8 L0 g7 e7 e* U0 O( K: [

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/ ~9 d- ~# F' Sin P_C, you need to send to die.$ K3 g4 i4 f3 x: B, g. @8 J7 W

! N! m6 Z7 b5 s7 Z% N/ ~  g5 LThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.6 Y/ Q! g- c$ e1 d: F

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1 q' n: |$ Z  O* f) k, G* _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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