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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,8 F# m, H/ {) `3 t
  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.# c- M; }+ H7 i
  Loads are processed by each operator for the following time:7 |) `9 w5 q/ @; T$ n- n
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.: m! ]9 m4 W3 f* Y. h9 x+ ?4 B
  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.5 {' H" k. @7 O
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
+ Z1 z9 e1 C8 RSend 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.. D0 x- I' D* L9 ^4 ~+ W9 Q3 m

, i) G1 V7 O( Y2 ^问题:
1 E1 n2 b! c; j1 q6 p' @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
  [/ T" P6 [1 m! v& u" Emove into Q_wait /*Capacity is infinte*/5 f6 x7 r  t$ H' f% K) G
move into Q_process /*Single capacity*/! G) H2 W( t! Q6 ~+ K/ u) |# @

5 g+ B- {& p; [+ T4 D5 Kuse R_A for n 60,10 min /*Resource A*/
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8 Q! ?# z( k1 g/ _4 X+ X6 E) @send to P_B
* Z' W) f9 @, L  u- `end9 g" w- t* q6 c3 |

( u5 U$ l4 G- wP_B and P_C is similar; g) Z$ @: s8 F( m
triangular 30,60,90 min
% a* T' t4 m" s: ru 60,30 min- y9 r8 y$ f( G6 h

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1 ~5 n& f, \3 A* }4 M. l3 Z& q8 i: u4 ein P_C, you need to send to die.+ a+ x) X' Y" L8 l/ l, q+ y

% r" x6 e( h2 E' x8 U3 dThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.2 H' x" M; i5 D2 b& t" B/ ~
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# d' C2 |6 I, K- [( yRemember 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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