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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,( ?7 d3 j2 c6 w) F# M4 _; ?( D
  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.
/ g2 `3 d2 i# ]0 h& N: z  Y/ t% {  Loads are processed by each operator for the following time:4 v$ M) g/ N; F8 X' c* S
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
2 F% i+ O; Q4 j  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.
: ^5 Z% A/ V. p3 j' ]  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ R/ D1 x" N  A- z
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.
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0 P: P: F; m/ b问题:- f, Z, w1 L2 v3 {' m1 e
After running the model for 10,000 days, what was the average number of loads in each process?
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( h+ O  F3 i2 C7 Q" r+ H不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving' e* {  Q% E+ P
move into Q_wait /*Capacity is infinte*/
  u$ l! c; ?  b* [move into Q_process /*Single capacity*/
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  D! e4 I+ U* X5 y, n3 V5 x" `use R_A for n 60,10 min /*Resource A*/  p2 o# }) l0 a- G% n1 F
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send to P_B
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P_B and P_C is similar
+ f0 [7 A! d; v5 l7 Atriangular 30,60,90 min
# ?* z8 f" m2 G6 ~: y3 W9 ~6 pu 60,30 min
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3 R6 p! Y2 v+ X2 Z/ b8 c7 win P_C, you need to send to die.1 |8 m( a3 m5 q* P* N8 _6 N1 S

7 s, X: \+ p6 x/ k7 D! m( b' \# Z. qThen 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 g2 k: |- Z# h' P8 {! u3 A! DRemember 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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