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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,% b( {% j9 s" v: z$ r' 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.
$ r$ \2 U* F' ?; T" D  Loads are processed by each operator for the following time:9 f. G: q+ e0 _9 O/ I
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.8 ?" }- ]) Y8 ]9 M* I
  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.
' O5 h+ ~3 ^! [/ Y  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 C3 ]  J% }& F8 W; D1 b% c
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.  i' C5 j1 _0 f1 T6 d

9 u( n+ Q. j9 ^6 x% a; K8 }3 Z2 a问题:
$ r; }0 d1 ?+ Y4 }After running the model for 10,000 days, what was the average number of loads in each process?
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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
# f7 n: J  h1 ]$ qmove into Q_wait /*Capacity is infinte*/) E3 l7 J) ^. h! A& n3 X
move into Q_process /*Single capacity*/
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' ~4 [" d# v! W2 _use R_A for n 60,10 min /*Resource A*/3 ]( A6 J" |2 r. e; k1 Y

0 ?' s/ Z) h1 T3 Csend to P_B
. {/ s( w( e7 Gend
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: g" P. F# `- y+ H  {3 M4 AP_B and P_C is similar7 W# B% j; N4 M4 S$ s
triangular 30,60,90 min- C! r, u9 Q4 {  d# A7 y
u 60,30 min6 o0 N  u5 X) H$ t; S6 A7 s8 o0 F: u

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( [3 V0 i; C0 m# E5 f, E& K. i7 kin P_C, you need to send to die.5 T& k+ O' Y' D9 y0 E

" N0 U' L, y/ N9 oThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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, @2 Y9 M/ \& eRemember 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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