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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,. d. g% H* g  v2 [( C$ |. ]
  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.# b, g* q4 O6 U
  Loads are processed by each operator for the following time:
% K( p4 P- Z  F/ @3 J# z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
) q% ~0 _$ b& a9 h' h, r6 G$ 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.
( [& I9 I9 s6 f1 X  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.' _0 m/ d5 q" _$ H. @
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.$ O1 c3 v( }2 Z

: m% h; K9 \7 N; P3 ?% g问题:0 }- {4 O8 A4 ~2 e% A
After running the model for 10,000 days, what was the average number of loads in each process?) B3 L. a4 k* X" w/ u1 t* Y$ 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
9 r! p3 H8 l9 s6 O8 b- Imove into Q_wait /*Capacity is infinte*/
& A" \" a) S) \' p1 z. {+ Gmove into Q_process /*Single capacity*/
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0 |+ P4 Z, @2 G1 E- m( }! Euse R_A for n 60,10 min /*Resource A*/
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9 @. _3 o, |) L- `6 O4 ]' lsend to P_B3 D+ o4 ?( n+ D) L5 N4 @
end7 R  }, m  j, F* A. i
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P_B and P_C is similar
3 ~( c, G7 i# ntriangular 30,60,90 min7 n% E: j4 H: J6 @- L; O& ?& K& T
u 60,30 min+ B( u6 M* l: r$ s6 }7 i3 Q- {
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in P_C, you need to send to die.
  ]7 a- d$ U/ t  D" h9 Q( f$ Z
0 T4 ?3 a' E$ Q( @8 e8 j$ @Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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0 |% l: P( R3 Y1 S% 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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