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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 |9 A: A$ F; t4 K+ M3 M
  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.! i  y$ _9 g- y6 t3 l' H
  Loads are processed by each operator for the following time:* `5 L+ W# u) q6 i
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.  g& y5 G7 ^2 k, M% U; k! q
  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.. E, S2 P' G3 U8 x7 K
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
) k, I  w) e) {7 x' k+ zSend 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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After running the model for 10,000 days, what was the average number of loads in each process?
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving4 P9 W; ~7 q$ x, D$ Y: E  @, A4 R
move into Q_wait /*Capacity is infinte*/4 a/ E! k  i; {0 e3 W) k
move into Q_process /*Single capacity*/' x8 ?+ h: o! ?6 r9 M& A
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use R_A for n 60,10 min /*Resource A*/7 z5 v* ~3 U3 [7 X& O

% t! V/ _  a& c: n  f9 X& Isend to P_B; q% I- g4 @/ J! G* }5 s
end) Z0 q& o. k+ F) k$ u

1 F) d9 m$ W7 Z4 k  G7 [P_B and P_C is similar+ y, k2 L& E4 p) T
triangular 30,60,90 min
0 p8 w: G' C  D- q# wu 60,30 min& U2 p( c& e; I3 n! T* L

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in P_C, you need to send to die.0 w7 t! U* e* _: @. z& g
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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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