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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,
/ W, |6 m0 E0 u$ K4 W* ?. d  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.8 x" y8 c# Y8 n+ J' X5 a& f
  Loads are processed by each operator for the following time:2 W/ i" a8 ?8 N  `0 K2 @& H
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.& ~1 G7 Y$ B8 X( V* n. [
  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.  a) |3 H9 ^8 \  ]; d
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.: g% f! L8 {- r; }
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.( t+ L3 `0 U+ A: [+ U- z+ _6 l) Q

3 d4 M: m3 \) ^, V问题:
8 k# q  F, K  e9 r# a  X6 wAfter running the model for 10,000 days, what was the average number of loads in each process?. r1 U; n% K3 B- c, ^- h4 s3 C
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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
; d. {# K  g: |0 w" A" c: _  s# fmove into Q_wait /*Capacity is infinte*/
& f9 q! ?* C5 O4 ], Hmove into Q_process /*Single capacity*/7 y: y5 _" U; u7 o: s5 e
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use R_A for n 60,10 min /*Resource A*/
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send to P_B; _6 W- F3 U5 d: e2 x% c
end7 t' M/ F( [! K3 r$ p) o/ z( b

; E) S- J6 }9 p2 H5 E0 d' uP_B and P_C is similar5 I, L2 j0 |; }4 E
triangular 30,60,90 min( P5 \! o0 Z# L6 k2 F6 }2 P( z+ }
u 60,30 min7 |' M% h, {7 J3 M

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in P_C, you need to send to die.  L# e2 W- ?5 |& e" R

" ]7 u( a: ^. S$ o  iThen 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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