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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,
8 `/ `! w; z' p) g3 d! \5 k8 q  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.. g! r- L( q& E
  Loads are processed by each operator for the following time:& P, q. B, U! _5 E; `
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
+ P3 ^- w9 O& G- g, `& u  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.
% H6 ^. [# t' F8 l  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.: m8 F% i0 Z, ^1 E/ x7 ]% ^$ A
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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* v( c/ H* d; d# L- t问题:
# B8 X$ O% |8 P! C7 G) i5 i0 ?After running the model for 10,000 days, what was the average number of loads in each process?! y, c+ \1 j) B3 t" p

+ Y! K3 x8 ~, E- Y& J! H9 @不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
$ t3 L4 E! e, u, Wmove into Q_wait /*Capacity is infinte*/
& z( J9 W* D- x3 w& Y6 j+ ~$ Tmove into Q_process /*Single capacity*/
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' v* Y( [+ D, A; w4 g7 J8 J5 y# tuse R_A for n 60,10 min /*Resource A*/( T. M8 n0 g$ u9 s0 s- _

  s4 C, L, _$ y6 m4 rsend to P_B: P6 G5 l0 P& O
end
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2 G# y2 p9 T* F5 e+ pP_B and P_C is similar
* Z5 v5 O+ a2 X/ H! A, Itriangular 30,60,90 min
" c0 s+ c& O* v* k) h. B; N# n# K2 I. xu 60,30 min
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in P_C, you need to send to die., k- H, _3 e+ H5 z
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.  ^+ C( s5 x( I2 M6 p" A$ }$ J, C( S% |9 E2 T

, |/ y+ c- o  ^, a
9 r6 i. q4 x: O5 R( qRemember 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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