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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,: d( |* s( L; x3 i0 X# L
  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.
) t- C: u: K4 U" I  Loads are processed by each operator for the following time:9 l9 Y6 J5 ^8 v9 |; w9 _, l& X6 T  q
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
" j8 D$ m5 j( q, b+ l+ m! c  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.9 i$ T1 H1 n1 _. g
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.1 ?3 x1 ^2 U& t% r! c
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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问题:) q! N" y5 w, h) W4 y3 J
After running the model for 10,000 days, what was the average number of loads in each process?
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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 arriving
( X# B  k1 D* A2 _9 umove into Q_wait /*Capacity is infinte*/
: d" g$ l9 v& {5 |8 J' \# [: \move into Q_process /*Single capacity*/
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" ?! K, l3 f( F- luse R_A for n 60,10 min /*Resource A*/# u0 E7 c; S; N7 c: D" Y% I
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send to P_B
, X0 A; ?1 X" P2 |' d/ \end
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P_B and P_C is similar: @- c0 C5 w% J) W& R
triangular 30,60,90 min
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in P_C, you need to send to die.
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7 D: q0 b) h/ h% d$ dThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.2 ]5 a3 I6 F9 C# a9 U4 F+ }2 M- r
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3 F7 q1 v5 V" ]7 U( nRemember 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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