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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 P' \" d- e  N, S' B9 l
  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.! j6 o4 Y# R" `
  Loads are processed by each operator for the following time:
( X: m0 a5 L1 w3 @$ ^  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.. {# m8 y' ], o- k
  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.
& O8 x3 U& K* H  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.8 S$ Y) v: n" P+ p: X6 R
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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  p8 S" V  m; @. ~4 ]  i! G. t问题:' O( p; Y' G1 j# W* x
After running the model for 10,000 days, what was the average number of loads in each process?" O9 N3 Q& h0 l
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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- l4 _( d( F- u* j* C9 a
move into Q_wait /*Capacity is infinte*/" K; s: ^# A, q+ u, k
move 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
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' p7 u- c5 U4 UP_B and P_C is similar9 a8 f/ `  e6 w* P! G2 P
triangular 30,60,90 min6 t) e0 q$ ]6 O, G
u 60,30 min2 [5 j6 f1 D+ d' O0 I; {  L3 L- T* n
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in P_C, you need to send to die.3 x4 C! r; S- R8 h) u8 q

# i; h: n$ s! h( ]3 _9 ~. u. WThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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9 C- I/ x; M7 |; zRemember 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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