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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,
7 H& P4 J  \# \9 A9 s4 g: H# [  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.
9 T0 [/ X, Y' |: W- a& E+ X1 h  Loads are processed by each operator for the following time:( K3 P0 j3 R4 `& l
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
! H* U5 i& \4 b5 w# y* |% h3 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.
" [; m1 f  e# F' n  O  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
6 K9 ~$ H$ ?$ M" jSend 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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' b2 R9 @: K" t" T) ?4 A3 H/ y$ V问题:
, y; c. z7 y: |After running the model for 10,000 days, what was the average number of loads in each process?9 E0 b) W5 ?" J; h# G

$ K) p' ^' v; N( Q; y4 d/ q# y) [不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
$ u7 k5 p( [3 P: i+ nmove into Q_wait /*Capacity is infinte*/
2 h* H. o' T! D. \+ Tmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B1 P5 E: i- g; }" j7 h0 ]
end
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P_B and P_C is similar9 ]9 u3 [! h8 V8 g2 |
triangular 30,60,90 min. d( u2 G' _* Y
u 60,30 min4 ~+ k0 V" B) ~7 A. `0 e! o
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8 ~% E, A5 I% b2 j) i' S, _in P_C, you need to send to die.
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" t# i0 V& [% H- M/ f6 ~0 MThen 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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