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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,; V4 I' Z& ?+ S$ I- N, d
  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.4 ]' y: [& k5 y
  Loads are processed by each operator for the following time:% J8 t5 b$ @  T
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
& f! n4 Z( e% [* p8 @9 \% 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.4 c" b7 h9 f# S2 h4 V
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.7 O" q3 a* k; g; B7 i
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 g1 b' X4 Z, n4 I4 J* r: F
After running the model for 10,000 days, what was the average number of loads in each process?0 v6 ^0 W* @! o  v* a) j& B
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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 I6 _+ U6 Y, F2 ]
move into Q_wait /*Capacity is infinte*/
' a8 M; |- x! |5 X4 hmove into Q_process /*Single capacity*/
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* O6 f9 Q+ E. g, p% `, k6 F3 duse R_A for n 60,10 min /*Resource A*/
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  h3 |, \5 D+ dsend to P_B
4 n# F: y9 Z6 u8 ^: C+ Oend& E( e% O# B) T/ Q, b; A

7 o6 @' J' f/ W6 HP_B and P_C is similar1 R) `5 \3 H! |+ p1 n  Y1 O
triangular 30,60,90 min
" j8 x4 L  @$ K6 Fu 60,30 min
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in P_C, you need to send to die.
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: o, u2 {, Z" e6 ~0 g& Z( K8 @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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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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