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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,' R! A3 ]& e7 \! X0 y+ j
  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 h" P2 a/ p: [  Loads are processed by each operator for the following time:
- a- H+ a+ U/ T  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
, }& w) p6 m( a4 n/ C1 S  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.
- S6 d1 K6 g: b) A8 B' i+ v4 r  Worker_C does the job in a uniformly distributed time between 30 and 90 mins." I* F- `0 U5 n3 U4 S
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.) q: m3 F7 c8 ~- e* Z( h

. K- q( F2 R3 }- I) D) J2 p. H$ t" h2 S问题:6 u2 q" ]$ t+ N9 O
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
& R/ W, _1 I& e" S0 Wmove into Q_wait /*Capacity is infinte*/
* Y! X: d! b# u1 O5 O  M: K) Hmove into Q_process /*Single capacity*/+ [1 k: U: I5 o4 k- _
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use R_A for n 60,10 min /*Resource A*/0 l, w6 m. {! Y' r" n( f

- l: K4 [2 ~- \send to P_B
, N; P' E3 e2 _7 {- _$ g( Uend: Y1 ?/ K4 o& @/ V. a" C

1 I( [; C2 y6 @) r. J* X0 l" @P_B and P_C is similar/ z2 X5 v' G9 q1 ]
triangular 30,60,90 min
! B1 s# `' L0 {: X& Xu 60,30 min/ P2 m0 m6 g' @8 d" @1 ^' y, q9 P

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1 r# [) G6 m: G( x3 C) Iin P_C, you need to send to die.: A4 e' N  w4 ^# ]9 ?# D# T$ y

% V" D* E. R$ Q( a* k1 _$ W8 I& s7 DThen 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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