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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,4 Z0 J* L! n' r' h/ e! V6 r1 f3 T
  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.' h4 |$ s9 [8 `' A
  Loads are processed by each operator for the following time:) u" _* I( V, q8 i( ^' V! K
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.6 z2 A  o0 y% S6 G% N( D
  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.
' u' A9 u5 M  {/ `  Worker_C does the job in a uniformly distributed time between 30 and 90 mins." Z+ @# b7 I9 x: ?7 d9 x. W$ [
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.2 M; e  O& S9 y: y

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After running the model for 10,000 days, what was the average number of loads in each process?1 L2 R2 P# Z: m+ c: h) b

+ x- `4 s+ r1 S5 ~" @不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
% T1 r3 D/ i/ e' v6 {% |move into Q_wait /*Capacity is infinte*/8 b5 B( H  H5 i# o- B4 l
move into Q_process /*Single capacity*/1 [; H. B/ I- y) S8 o3 V

; R! O( x  a$ S6 e$ g$ I# Puse R_A for n 60,10 min /*Resource A*/* H+ U1 h1 y2 o5 \, Y, [( r" e
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send to P_B8 p; |/ Q5 I# N3 v4 r
end
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P_B and P_C is similar
, J7 G6 N! F" L" X+ [9 `7 @triangular 30,60,90 min( u8 z# e  E- @7 t& m; Z  B
u 60,30 min/ Z, p, U  E- p) W
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in P_C, you need to send to die.
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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.
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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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