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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,6 {9 \. ]& F0 P! a8 C
  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.
6 ~8 U2 R; n5 p$ O6 F3 C( {/ y  Loads are processed by each operator for the following time:
  h5 W# e. Z( K  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
5 H, w- A+ K2 l; q/ q0 [  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.
* v& G6 u$ U0 f; I" x4 M9 F  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 |- B9 u! j8 w5 R: Q
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.4 b/ W2 c9 d, A  V2 `

1 p" y. P. A: y( Z问题:
! A+ Q8 e9 M7 b0 y1 C2 o( h7 GAfter running the model for 10,000 days, what was the average number of loads in each process?* v8 F! b8 p7 f" e- S

4 Q; a0 \; P8 C6 {7 S% e不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving9 a2 V5 @$ M0 B2 i9 \
move into Q_wait /*Capacity is infinte*/
0 M7 q. S) Y) Y2 m; y7 F2 D  k1 e  Jmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/& U4 m. T# p2 o: |) @
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send to P_B& w0 e3 G/ ~6 ~9 ]: }
end
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P_B and P_C is similar2 }  y% ?! g; n! m1 @- M9 Z/ w
triangular 30,60,90 min
6 t* ^9 o$ x$ |6 g  Pu 60,30 min
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! _( C( v7 j6 r8 Q: Q8 Ain 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./ r) A$ y# y6 X3 S

+ X1 P6 Q2 h' q$ t8 b5 J
  ]3 M, \2 y" ?: ~# s! O; j  ?3 A8 C0 qRemember 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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