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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,2 D9 M: a5 o( R8 Z* g" ~
  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.+ |4 o8 O6 b  u0 _5 N
  Loads are processed by each operator for the following time:
5 m. B9 D: g0 L6 U- t" z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
" u; x& {- _$ ]" s  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.
3 I: y$ R9 }& a& @  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
  ^' H9 }( q: n# C$ CSend 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.' D7 k/ g: P" m: r" z. i" V

: m" r0 Z( I3 N- c问题:4 ]' \+ O* }. f8 b! ]* F
After running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving5 Z! D; s1 ]3 @- q
move into Q_wait /*Capacity is infinte*/' ~8 g) X: J5 W
move into Q_process /*Single capacity*/% A( B  |6 u  F5 ^5 t, K* r) c. W

3 X" x! l3 }& h& tuse R_A for n 60,10 min /*Resource A*/
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send to P_B% @  ~# `  T) e% K; c
end$ @5 }: D7 U$ H1 _  Q! J
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P_B and P_C is similar
8 Q/ Y: c: h2 Q% j, atriangular 30,60,90 min
7 D6 ]4 W$ d" p; j$ d' |" F  k3 ]! Du 60,30 min
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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." v# b' V8 t# F0 z! x

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' k/ l% q% Y! i& `% [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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