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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,3 p8 s( V6 o7 ~8 e% 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.- u* U( y. X" z: J' o: q
  Loads are processed by each operator for the following time:
) ~6 E- Q3 R. z1 G0 D# M0 I  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 I5 y# \% q' V
  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.( `6 @  G5 F" ?7 N6 r  K
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.! Y$ D; G9 s3 T
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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After running the model for 10,000 days, what was the average number of loads in each process?4 @2 L" ]( @; ?5 H0 E

8 v! w5 N. y6 J* i  n1 e! Z( A不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving) K8 H4 F1 y: Y5 p# p8 _% H
move into Q_wait /*Capacity is infinte*/. X* P2 |; \: |9 [7 W2 d, m8 H
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/. }0 w; }/ L, l7 @3 b4 r; X

6 h) L; I) r4 ~5 q* tsend to P_B
$ j: s1 ~) C2 g7 Jend7 x$ a, u2 B& G2 g; a; Q4 I/ N
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P_B and P_C is similar$ r3 |, p5 e6 l
triangular 30,60,90 min9 V( k9 C% S/ i
u 60,30 min
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in P_C, you need to send to die.+ U( C7 j' ?6 N! U. I3 ]/ `& W& z
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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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+ H  z+ `& B# q5 j5 t' cRemember 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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