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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,
" D  V# R% {% ]3 I/ s5 F' J( 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.; H" U4 W; f, K. B4 m5 _* A2 j
  Loads are processed by each operator for the following time:0 V* |5 ?6 m6 s- t# J
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.: M+ C. e' b' v1 ]0 n$ y
  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 y7 a: `& L/ }- m* z+ \  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.; u% U. |- @0 k& B9 ]
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.' \: A+ z7 {1 B2 ^/ S/ w

4 n% t$ C; {# I问题:& i' r; K# ^2 u/ M& R8 Z
After running the model for 10,000 days, what was the average number of loads in each process?! D; D4 W/ K# w& B- a
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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
- h* A5 ~0 X7 t) `  |move into Q_wait /*Capacity is infinte*/
- _$ O, g3 g& Y) l' t7 Kmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
3 _- _' O/ J8 z! {% h5 pend
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* F' e& b8 _8 e# ]8 d* x; k6 tP_B and P_C is similar4 p! `$ z0 c* m, K' {  o5 s' w
triangular 30,60,90 min. W  k& @3 m* n9 d, M3 i
u 60,30 min
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1 I, P3 q( [4 I' @6 E+ A1 Jin 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.6 r: x9 u. A1 U! Y( _5 D" Q! q
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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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