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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,$ N1 n0 n; J# O4 p+ f5 Q
  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.
7 U1 M8 m% q% i) t' }/ j8 v  Loads are processed by each operator for the following time:+ Z% e4 k; W( X8 M- b6 e& ?; Z
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.8 O8 Y$ o" U5 u/ 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.
% @) M' f, i3 G% j- e" S- Q5 Q1 W  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
: U- D- @/ ?8 n* N- \! iSend 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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5 g* P9 O! S8 D9 W问题:
. i4 o, w- b; [& l: }; {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% i/ I7 L# J% ?, b, Q# O( q( t
move into Q_wait /*Capacity is infinte*/; ?) S: j  S2 k0 h. O9 c( [
move into Q_process /*Single capacity*/1 W5 c( O& ]5 m1 ^- z; O2 h; D

1 l1 ?0 h8 F$ \( w: Zuse R_A for n 60,10 min /*Resource A*/) j9 B; s5 H2 o. Y" O
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send to P_B
0 a. `0 q% t# `4 ?9 {% v; fend
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P_B and P_C is similar
# U$ o$ k& Z  |# A- t7 Ztriangular 30,60,90 min
, D- w7 \. Q2 a5 E$ D  I9 Zu 60,30 min$ ~2 T; V2 {- [

* U9 d* |* I# ?
. Q& }' `8 c, A+ o7 `in P_C, you need to send to die.' g* b* _8 S* j1 ]6 |

7 w* b+ k; B* K; ~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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3 T1 p8 q4 H6 mRemember 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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