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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,$ S0 {3 B6 U  ^  t
  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.9 T7 ^7 V4 y) S; M* G
  Loads are processed by each operator for the following time:
# N/ |+ h  z$ L  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
/ y# k0 ]' D( V6 e; e( q/ O  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.& e7 e+ J! {1 f8 B5 N0 p
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
- S; k: S  R0 R1 W; ]% s1 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.# R, ]! Z" M$ {" `# z! p

7 q7 N$ w, a& q- d# r9 T) c- P7 w问题:1 q: s& w* C! \" E! T
After running the model for 10,000 days, what was the average number of loads in each process?2 C, E9 G# ^1 y: n3 X9 ^3 N2 s
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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 arriving9 J' Q2 r2 T4 u7 `  H2 j' g
move into Q_wait /*Capacity is infinte*/+ W6 E  ?$ v7 |; T. N9 b5 Z3 k
move into Q_process /*Single capacity*/
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: c" `) v: r7 zuse R_A for n 60,10 min /*Resource A*/9 A( L. h9 J( q$ `1 p! _

- M3 A* [' P  B6 u, A1 esend to P_B: C. M% I$ A- A6 i: ~9 e& H
end: P1 z5 m# I. J7 W2 Z

4 ~; i) b! j& C# I4 iP_B and P_C is similar' [+ k" D9 R2 z% I4 U9 A) {# m
triangular 30,60,90 min; `6 n! F( |' W4 W) X0 p
u 60,30 min
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6 v9 u& z* c3 R# x; O9 yin P_C, you need to send to die.; |* F' s& w1 A% U; T" W: I, `2 R

  n2 d) |# z" E7 i) dThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.2 R8 U: J% i2 S, c7 b0 q- `+ V
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, x' M2 w3 y: ?Remember 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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