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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,
' E5 |, I) u* g; }6 W* r. s  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.
; Z# L; M6 r6 _$ I  Loads are processed by each operator for the following time:3 b: Q4 h* u8 I! i6 P7 P
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
" D. _5 }( ^2 O8 F& q+ I" P  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.; Z' L* B+ I# l* e6 X. ]% v
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
  s; k4 Z) Q- F5 f2 @! d; Y; p' ~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.
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问题:
, K- M5 ^$ \  w1 jAfter running the model for 10,000 days, what was the average number of loads in each process?/ N8 D* u  \! k+ L" a9 P

: `% |+ B" t: u$ E, T不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving; }; g$ V. {9 R0 P! j6 C, ]& f9 D- m
move into Q_wait /*Capacity is infinte*/
& V- e2 P1 v; V3 \move into Q_process /*Single capacity*/
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# @% D/ ?7 \; Fuse R_A for n 60,10 min /*Resource A*// c$ e, p8 D9 ?4 D2 L

! S% r- _- m' |& \7 tsend to P_B* M6 L4 j8 a2 h9 g; u* V. o
end
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P_B and P_C is similar
8 w: f1 t. B- M0 t; P9 |# \triangular 30,60,90 min$ y- h$ J' l$ l" _' Y* d
u 60,30 min
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( R. @5 C0 R& i3 z. [# yin P_C, you need to send to die.
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' S" l$ x! @' Q, iThen 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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