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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,
& z) b( }9 T* o/ ?' L7 p3 s  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.) {1 g% [" G' C6 Y& R: P. M
  Loads are processed by each operator for the following time:
! E  c3 L% i  r4 T3 z! Z* G  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.% k( i9 G$ C: l4 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.
. p% \; e6 `) v  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.0 |" l4 g# Q# [' V9 |, ^0 Q
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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问题:
7 z/ k) ~; @. f8 ~* S; s& |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, w$ x4 c, m. n2 q2 Q
move into Q_wait /*Capacity is infinte*/
* q  m# P. R' e9 T/ Q; P# omove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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/ W5 F  V( A2 E: H( fsend to P_B
" f/ v# o/ [* i1 f/ W& N' Tend% M- O+ f* d: n( a3 M  Q% f

# Z; [: p3 d3 w3 T, EP_B and P_C is similar! G4 O* Z4 D/ S
triangular 30,60,90 min
' A1 T: p0 C" i7 ~5 p6 Ju 60,30 min2 k( [. _1 m) n

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* ~" e/ P, M. }8 d) M" bin P_C, you need to send to die.
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) v1 i( R' H( B# ]% d" L$ qThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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( q0 ^: p7 j' v6 MRemember 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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