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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,, c- i& d. z' n# d# N
  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- M0 f7 ~+ z# R1 H9 l  Loads are processed by each operator for the following time:
& |! A' o, Y7 p- Q/ z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.- H/ L; L$ r* o' X- 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." p( A! K  }9 T) P$ @4 W' V6 q
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
3 R8 `& e4 u- M6 SSend 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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问题:3 D/ h4 H/ {: o' w
After running the model for 10,000 days, what was the average number of loads in each process?) T7 Z" }' s, D  X

, Z  H+ H7 |; q6 ~# R不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving8 q+ t# ^1 W  f/ g2 f& I+ l
move into Q_wait /*Capacity is infinte*/
& K. O- F' e* [3 Ymove into Q_process /*Single capacity*/1 }5 n7 y6 S4 i" X  d

9 X4 U8 ~4 b; S7 {) p% i2 ~use R_A for n 60,10 min /*Resource A*/
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send to P_B
$ J2 v; Q- E7 yend; y4 t1 e* h5 J) `6 o8 m  |

5 i! f" l# ^  V- q& zP_B and P_C is similar
% T; b3 w$ c: F( D+ U. j; qtriangular 30,60,90 min
5 g! u  T$ _6 e! q1 [" {u 60,30 min
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  I9 k7 S' m9 Nin P_C, you need to send to die.
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: c! s! _0 |- J$ ?' `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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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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