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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,
0 p  d2 e) U5 Q+ |; p& t- Q# 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.
" T$ j& Q5 n, f  Loads are processed by each operator for the following time:6 g- _! u' G3 X, `
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.+ f2 c/ U8 N6 w4 `$ \
  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.8 T  d0 H) ~* X# U$ L3 D/ n
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
5 I) p( G8 U0 t- kSend 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.
9 s8 `" r8 {6 U5 l/ ?& G& R9 d' w
7 Q' I# V% `8 E) p  b问题:
$ n* E4 D, L, h! DAfter running the model for 10,000 days, what was the average number of loads in each process?5 Z" o- M4 L. ?1 t7 K
6 N: d" @: u4 j6 H% F
不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
  [+ y' n1 B  C& h3 W# r8 ?. hmove into Q_wait /*Capacity is infinte*/, ~- n; B% e  T, t$ K9 N" v- w
move into Q_process /*Single capacity*/0 p' I0 U6 N: }% E

: r( Y6 R  }4 w; u. G: }use R_A for n 60,10 min /*Resource A*/
5 V7 Y# c/ f9 e% N) P8 g- f1 a0 x. V) u) k
send to P_B  {6 e# Z/ n. Z
end, X! d% E% G, B  ^  L; k. G& v
, z# X- V" ?. u# l! e
P_B and P_C is similar8 g8 V) N- Z$ a3 q( Z$ Q
triangular 30,60,90 min
1 w; ]! n* s( _/ E% vu 60,30 min1 \3 x+ |4 g4 ~0 c& x

3 J! g, Z. a2 h+ M7 h. A5 Y8 A2 }; ]# T2 T7 }, w5 ^. a* C1 F
in P_C, you need to send to die.
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9 {6 \. [3 D! KThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.# a8 \0 k- y6 R
) ^' y4 A: |& \/ E, S: F. E$ }

! l) u+ Y8 _8 ]# K6 J2 ~; T7 B4 bRemember 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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