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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,
: U& j& ]6 [, c3 A, l  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.0 a+ x# M- M/ `+ [4 q8 d
  Loads are processed by each operator for the following time:' P$ @9 i+ j, e* [8 @$ q0 [
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
$ k/ L; z% ~" U4 K. j" q! 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.
2 C" A. y' X0 R3 u, f1 T  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
% K  J0 [" m+ {6 @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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. `( t3 ~$ I8 L( W问题:) U3 Q7 y& o1 v5 Q
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 arriving
6 c/ a$ o9 i$ {# l& p$ m+ k" Qmove into Q_wait /*Capacity is infinte*/, b, R. W6 g9 c2 F3 p
move into Q_process /*Single capacity*/
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3 I+ z7 ^, V! i% n' v, vuse R_A for n 60,10 min /*Resource A*/
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send to P_B
9 S& q6 E, }1 ?5 \: Iend
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P_B and P_C is similar
0 H$ G6 r) i( Vtriangular 30,60,90 min
- s; Z+ l. n) Wu 60,30 min
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in P_C, you need to send to die.
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% D. g  u, }- {- E- z: u& vThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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. `' D, Q9 X! g' y7 C: QRemember 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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