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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 ?% }6 D  t( z  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.0 F+ x4 g; f* C0 r! q) [1 A- i
  Loads are processed by each operator for the following time:
" W, h: M  U7 k+ A% T3 {  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.6 t" Y6 F) O- k. Z) }
  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.
1 M  A; Y' J' Z: g& U% S4 D& k  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.  v3 n: f2 c  _5 g! S/ 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.  ^5 ^  f6 Z- q5 p  s
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问题:8 g7 Q4 `2 y1 G* l- O: J. ^
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 arriving6 q& I" h# w8 {3 k  Y4 D
move into Q_wait /*Capacity is infinte*/8 |% I2 d/ b  Y3 S; O
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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. k- h2 Z5 L- Esend to P_B9 \( x0 `6 Y9 Q$ D
end
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) m3 Z0 s, D5 f: U. C% E& nP_B and P_C is similar4 I2 T" S' {( m" q( u
triangular 30,60,90 min
2 t* U) T+ B4 K6 h' K  W. Vu 60,30 min* e" |0 l( N; g  B9 E
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6 t, C' e' y" _: I7 Q+ Yin 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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- ?2 q: I7 }1 _* \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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