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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,+ e) V. j) s7 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.
' R- X9 q& W' B" B, i3 H8 K! R5 G# Z  Loads are processed by each operator for the following time:
' D' C; g- {1 L: p  }  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
- o2 \9 S. M$ n' f; K2 z1 L5 s1 }  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.4 f6 x  _$ Z# y& A9 Z
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
- ^  g. e" K# }+ t, P+ WSend 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.  {: ~0 ]7 w" c* P9 `5 W$ m

3 a- A4 C7 {+ M) a& h# N问题:
, w' S3 \7 O# vAfter running the model for 10,000 days, what was the average number of loads in each process?) A, c: A5 J) {- O, a$ `0 ?

' U: U0 S/ i- X) W& U6 R- @" `不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
6 N  y" K) C  v* ~/ ^8 H" Xmove into Q_wait /*Capacity is infinte*/
8 H7 {1 E0 |4 e  }+ i! |1 ~8 xmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
! Y8 G9 D* h$ ?end3 @+ P2 r% e, [9 g. F

% t- V* z" y2 I0 t9 z1 M& IP_B and P_C is similar
- x9 N& k5 T) w6 L+ K4 Dtriangular 30,60,90 min
- v- T; w, ^+ R5 ~- su 60,30 min1 l( s, }" M! v( j* [* |
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in P_C, you need to send to die.
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: Y% ~* ]$ a* q9 x" M: `Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
* p$ M" t! P" V, a& H5 J" g; Z- G1 X& P  x  @3 w4 o
$ `9 ?- t$ i! N9 I) D5 i
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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