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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,
6 K4 R, h8 b/ @' j$ 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.
  X$ K% F. l/ p  Loads are processed by each operator for the following time:2 d& r! g2 H2 K, P
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.1 r9 Q$ R+ L9 }1 e- l6 b$ g0 x
  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.+ J) m3 G) N! {- j
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
7 \) y' h; a) Q5 ?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:
) T' z# f$ r+ H& Q6 h5 JAfter running the model for 10,000 days, what was the average number of loads in each process?
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/ `- |! q5 U8 w; v% [不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving5 I) p2 W. L/ v% X, r: g
move into Q_wait /*Capacity is infinte*/
/ a! k0 M6 K- k3 B  Jmove into Q_process /*Single capacity*/4 r7 C7 |: d9 y0 c" n) p

4 {8 i: _  t2 x8 \use R_A for n 60,10 min /*Resource A*/. A, @. C0 `" O5 o8 T8 Y& }, G$ u

- E7 r' g4 f* q+ Lsend to P_B; T0 X9 \9 F& m1 X+ y
end
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P_B and P_C is similar
1 I5 y  c6 Y6 d8 c' c& Htriangular 30,60,90 min  y" |% }* T# W
u 60,30 min
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1 G. C* o8 `0 qin 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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