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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 U6 y0 b/ |9 Z2 z* `4 ~( j& |
  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.  w  T2 j8 `+ A0 K% ]3 |& S
  Loads are processed by each operator for the following time:- o3 Q9 ^! Q; X4 [3 n# X6 B
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
0 Y$ q& {8 j# I/ A: p# {  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." T4 |. m+ ~; G4 D9 Z
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
7 g& h$ L  R/ O' S" RSend 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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3 K; i" n8 u" z$ ~. q  U+ Z问题:5 P- |1 ?1 L3 N' s+ \- y2 B& Y
After running the model for 10,000 days, what was the average number of loads in each process?  u. I4 N9 O& l/ y! W' w

# R' B1 X( I# P' p, ~# E5 c不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
! u+ b" ~2 f! k( U+ _& d- fmove into Q_wait /*Capacity is infinte*/9 u& z! `- [7 G6 C( L
move into Q_process /*Single capacity*/
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: h) s% ~: E9 \. `! R% Kuse R_A for n 60,10 min /*Resource A*/
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# D; I5 n4 \( X7 [! r/ wsend to P_B
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P_B and P_C is similar+ ^% m6 `$ E4 r5 J- ^' a6 s
triangular 30,60,90 min3 o' d5 W% n: x  @4 K) p$ b
u 60,30 min
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in P_C, you need to send to die.) Z+ ?! @, x5 v7 Y6 D9 C7 F/ I' I
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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.: k( _. r  k8 p9 A% C5 q
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! \3 V5 Z& @5 W1 WRemember 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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