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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,1 a) \/ `: X. d2 ^
  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.
* ?, o- ?: W  y, i: w  Loads are processed by each operator for the following time:
# I: h  D/ K3 |& h" \  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 Q! c) j/ ~. n5 d7 F2 t
  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.
/ T8 h9 n8 B3 Q+ m/ S! N2 V8 k+ ~  Worker_C does the job in a uniformly distributed time between 30 and 90 mins., y( c5 m# A" W4 O! u; T
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.- K" e6 B' z$ ]' T( u
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问题:
8 B% z  [8 K2 |) K1 K% xAfter running the model for 10,000 days, what was the average number of loads in each process?
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9 y2 ]6 |% n4 l  ?! V* P不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
5 X3 o! f( [1 `- }  t  ]$ amove into Q_wait /*Capacity is infinte*// h  ~& s5 h( }, o; @- M
move into Q_process /*Single capacity*/+ b) e* P3 M3 v; Y5 H
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use R_A for n 60,10 min /*Resource A*/
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7 z; ?! \( s/ L: s$ e/ ~6 Esend to P_B: L/ Q7 X6 ]% W" O, U; A# d# x
end
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! |- j) L( E& q  C. iP_B and P_C is similar
( w, x5 V/ N" k8 I, mtriangular 30,60,90 min
# u# `" A6 C  L/ Q8 k. S, l, iu 60,30 min
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3 w4 M% B7 g8 D, pin P_C, you need to send to die.: }# x( Q8 S: l
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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.8 v* U' _4 _- y+ P2 p

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& Z# |! g) M- ]' 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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