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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,) v7 E' |6 ^3 w$ p
  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.
+ D' r6 Y3 a$ Y' x" J3 O  Loads are processed by each operator for the following time:
: Y+ r; P5 k7 [# N9 C0 @4 O8 W  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.# h/ [4 j" Z% d$ X# K5 j
  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.
/ f( @" s$ @/ K  Q8 p( B  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ s. N% z: F! |+ D' `, o
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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) D! y7 Z2 L7 \' Q& M" N问题:5 L* K! j* O) h9 u) M7 u( O8 U; R6 M
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
8 [* S% r( R, r" K/ ~; Umove into Q_wait /*Capacity is infinte*/: Q+ x4 M/ z; o3 w8 W0 o
move into Q_process /*Single capacity*/9 Y0 {) g& O3 X9 Z

1 f4 n1 Y2 l! _' ?use R_A for n 60,10 min /*Resource A*/
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! G( N/ T2 _0 |" e! p, {send to P_B* x& b- r! D, N6 G, M0 w
end
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& i% n" T3 f' y$ SP_B and P_C is similar
: H0 e& B) K5 |5 n+ }/ g% A+ Ltriangular 30,60,90 min
! e  R0 g* x2 ^0 U6 h. |: K0 ku 60,30 min
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in P_C, you need to send to die.  s9 Z# [8 X0 o6 g# _7 _3 g% O( d6 q
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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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+ O% G. t/ f3 N$ {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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