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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,
# A. t: W! A- [  i- B4 v1 y  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.
' c9 @- K- f5 d' y: u" ]  Loads are processed by each operator for the following time:: O8 k: r) K0 U7 s2 c2 u2 H+ E, U, h& ~8 c
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.! n0 t/ O+ v- G2 W
  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.
! h# p! Q  d% O8 r/ Y# \2 V  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
' B+ K. w: D3 L0 JSend 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.6 q! @) S3 e5 _7 Y
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问题:
7 \4 O* |& }" [! c' `After running the model for 10,000 days, what was the average number of loads in each process?9 I9 v" c, J+ z. _

. [8 E5 y$ q+ o4 A不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving2 Q1 v# T. l  h" Z' }5 [1 U4 E8 P
move into Q_wait /*Capacity is infinte*/
6 ?0 x8 D/ D- r8 C3 X. B6 omove into Q_process /*Single capacity*/
1 N) j2 y. c" V% r. p5 K$ A, X5 G
use R_A for n 60,10 min /*Resource A*/; g; p1 b* b- m0 r7 ?2 y' v

' E; |0 o% ^7 ]' H6 ~send to P_B7 q0 ^4 Q9 q4 A! |8 @1 e5 p" w! j
end0 S5 Q0 m' L* x$ k

" t3 \2 Q. U/ c$ y# U6 D! i9 eP_B and P_C is similar
% d- f. w; Q0 [4 b9 Ktriangular 30,60,90 min
6 z2 A8 D, E9 f* ?* |6 T5 M- U6 eu 60,30 min2 B/ n. U& ]% B& O

) r8 G, K* u& n, D: L. _- y; G6 a8 O  ^$ f+ D* T. a5 ]
in P_C, you need to send to die.; @2 [) M; D' R/ h% q2 d

5 h3 R7 x3 f( kThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.  W  D& Z3 r0 [" @) K
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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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