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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,
  Q4 t) [8 ]. d  n8 s, p; M& _! G: J  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.2 t, K* b# _! V" W7 N
  Loads are processed by each operator for the following time:
1 v/ d4 Z. p/ b( L# q  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.+ J6 ?9 `& ~9 Q0 X7 x) c
  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.5 K$ x4 K& u% j9 b0 [( a
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
0 O" T6 Q. g" E: P1 P) W2 [% L  USend 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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7 G% ?: h5 T3 q  h: v! [问题:
. {# c( C( _. C* fAfter running the model for 10,000 days, what was the average number of loads in each process?
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8 A; L, p! g3 F$ l* @不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving! g/ |; c3 U; u, O) J# F
move into Q_wait /*Capacity is infinte*/
9 u) F) c% m- }! h- hmove into Q_process /*Single capacity*/' D7 d4 ?3 W: H( a

: n* x' ]( q, suse R_A for n 60,10 min /*Resource A*/9 [, @8 H3 G' }1 |# L6 F9 D
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send to P_B
& z& a% z+ d: i8 f( hend
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P_B and P_C is similar
9 {- H, {, Y# p0 y. J% {triangular 30,60,90 min
8 A0 _5 h: P# S8 o. N; Y0 |6 T  `u 60,30 min; p% }% K/ r2 d7 n" D. [+ A! L
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in P_C, you need to send to die.
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9 E$ u5 X- p8 Y* FThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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1 R. F7 ~4 ?- nRemember 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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