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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,
4 k& p& {) r6 I  r" l* N2 o9 [( G  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.2 }& P7 H% U4 i
  Loads are processed by each operator for the following time:
0 N* R/ ^2 ?! P( u9 r  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
0 F8 K7 l* R* Y6 x9 |+ N" n; T  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.
! o, @7 Z$ N: I9 F/ p+ ~* G  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ i% N9 r- ?* h3 l! H
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:
. p' y+ }3 L% u% O/ A9 ~" aAfter running the model for 10,000 days, what was the average number of loads in each process?
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4 O# c- w# r3 Z9 p$ f+ c不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
$ {$ P) a6 A1 dmove into Q_wait /*Capacity is infinte*/
/ M+ ]7 h; _" t1 \% d+ z3 I/ _move into Q_process /*Single capacity*/; E/ [# j1 Z2 B* T9 E

3 i' M! d7 M. M% r9 M$ J, R3 s9 \use R_A for n 60,10 min /*Resource A*/( F6 S. c* a3 G; g6 ~) `

. x& L0 c. {, I$ ?: P- Fsend to P_B
  n4 p9 g4 f) c* h' \8 a9 }0 [+ {end/ W5 J9 U. [- Z  j; d
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P_B and P_C is similar
! f! n  \8 Z6 x- ?0 p! [/ u! Gtriangular 30,60,90 min
$ z" C+ T0 [9 w6 C( Eu 60,30 min  ~1 R" o. u5 K: P5 W. U

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in P_C, you need to send to die.4 q/ Q4 p- l. g" n% [
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.8 e$ f* _7 \5 v' y

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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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