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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 j3 ?& o6 b6 K+ E  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.
" r# P; L% |2 v0 b. O, v  Loads are processed by each operator for the following time:8 p$ b  _. G2 Y2 U3 _2 x$ S
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
% C* ?  e9 y! J: `* W  b# \' x  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./ v# c, s: q3 _$ @* _( `3 D
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
# N" K; k) W& y' ?0 ?  N3 Z7 tSend 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:
1 I$ Q% t6 F. K# t2 ?& Z# sAfter running the model for 10,000 days, what was the average number of loads in each process?' C% n0 {  Y& D( S  y/ |

# t. y/ c( f: E1 |* w" X, _不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
( ~- h9 v) ^' ^+ @6 j8 ~move into Q_wait /*Capacity is infinte*/
+ r% u' d" b& N8 Z& O; [7 Dmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
* o1 k6 L, `6 ?; }' ~end
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+ n( A9 P) |9 Z9 `' m" O# p+ ZP_B and P_C is similar/ e/ B3 |7 e1 l: k) K- @
triangular 30,60,90 min
' F  y/ J5 A1 }& p! ku 60,30 min
7 S6 o% L& S8 {) T% c  h8 ^+ W# N1 j# G. C+ d$ C

- @6 l7 x, F3 I( S  J3 J6 Nin P_C, you need to send to die.1 j" x5 c! K. [! P
% S# M+ L( C0 c" t2 w
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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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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