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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,
( |" b9 m' R+ x- C& k- H  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 `; n0 B1 k4 \/ `+ J  Loads are processed by each operator for the following time:$ {# ^$ X2 o4 I8 A' V1 d. s" \
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.! O- q) q  I, K) G% M1 z
  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.! s! r* M+ h  {. ?
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.3 G$ R2 o2 ]; b. v
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.3 m7 J2 n; o; W4 z% ^
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问题:
% ~& g4 D$ K$ iAfter running the model for 10,000 days, what was the average number of loads in each process?
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; T9 v# v: }5 v4 Q9 @: M- \不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving, O; q2 d8 K2 O
move into Q_wait /*Capacity is infinte*/
3 q9 {" a& m3 }1 q& k8 X/ J/ Nmove into Q_process /*Single capacity*/& M! Y3 r* V. i7 A1 U2 {7 g, @
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use R_A for n 60,10 min /*Resource A*/
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send to P_B& j7 _& ?8 k% V( A9 ~% q
end" \& v2 O, p8 ?, c' R7 X. d& O& H0 z

/ ?7 Q; G* Y; S# U' F: ~P_B and P_C is similar
" i- }1 l" U6 |( ztriangular 30,60,90 min
; ?6 e9 i' B+ b( eu 60,30 min; i& z: K0 e' L: z1 t6 W2 `& [2 D6 y
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$ D8 e  ]3 {+ O( Kin P_C, you need to send to die.* \3 B+ Q8 ]6 r" @4 f

. m$ w8 \3 l% rThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days./ v$ f) u) T+ s* p9 t$ w, |

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/ d% N- p$ M6 S& W. b; K. w: E7 cRemember 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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