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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 p# ~  X- i% }4 `( W  e  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.
! I1 y" ]& k9 a/ ?- L  Loads are processed by each operator for the following time:
8 S5 w( m. g* I) \  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
. J7 f& M6 d5 p& S: `  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.
) d$ @& ^. @% ]. y/ N. ^& u  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
1 o/ Z1 [, c) ^: {4 MSend 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.2 {7 v7 s" K- S( [; e# i# ?* W

* g- R6 }4 }, X! f( ~问题:. }2 G' v: D. M& t8 m: i% E# a
After running the model for 10,000 days, what was the average number of loads in each process?
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" n$ \1 `; v6 y% n: e/ @不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving. S8 N5 ^2 q. u# D# {; ]/ Z
move into Q_wait /*Capacity is infinte*/
% t$ [* e& a) p2 o% q8 ~move into Q_process /*Single capacity*/: m! M% o' d5 v( a- [

$ H6 Y9 \# @4 |! d7 muse R_A for n 60,10 min /*Resource A*/
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send to P_B
1 J/ p3 Q( l9 W! ?+ w& d3 \& Yend
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2 I$ X) r$ `& L8 w" VP_B and P_C is similar
/ B( t/ R6 ]$ ttriangular 30,60,90 min
, u$ u+ o7 f0 z5 mu 60,30 min
0 R2 S* W6 r$ \" \4 b, U: R7 i/ ~/ U

' i! G& O+ Y" n/ V* g4 g6 ^& kin P_C, you need to send to die.
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( @0 [# ^. i% s* v2 S9 t7 D- dThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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8 C* B  Q5 c6 e8 _0 JRemember 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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