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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,2 E9 o8 z. M- m$ v7 e0 L$ y! y
  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.
7 N- h" |" i. q5 j  Loads are processed by each operator for the following time:2 t5 G: s5 Y/ i4 z7 _: A* n0 i# m
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
: b5 t/ p, ?- d; t% Q5 A  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.2 V- _# ?- v- t! q/ k/ c6 M
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
9 m+ E; K3 b$ h* b2 ?3 n. v/ ESend 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 s( ^) x: F  C问题:
* P: w# _* a- B' o2 r; SAfter running the model for 10,000 days, what was the average number of loads in each process?5 v7 ?! Y. y! `: v& Y6 [
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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" F+ M6 P: F$ d' H0 g. c5 p
move into Q_wait /*Capacity is infinte*/
+ u% h  C$ P2 V3 W. Lmove into Q_process /*Single capacity*/2 Y; Z( O0 ]- R3 ]7 h3 |+ ~# |  \- F

% i! C0 N: s7 c2 `use R_A for n 60,10 min /*Resource A*/
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send to P_B
4 H' i* p' {# ^" J9 W  q/ v1 X- Dend1 u4 [* C3 e: z; j, r0 F! W

! ^. G. L  c" F2 [3 UP_B and P_C is similar
% e( B# e+ B* f2 g: {( @triangular 30,60,90 min5 E' l8 Y; H; L6 c  S* ~
u 60,30 min
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in P_C, you need to send to die.
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- y/ }( v) A5 |( ^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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8 Z1 _  g: `6 H; T" |0 S" SRemember 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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