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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,
3 S! y' y4 Z) N! q% h4 b  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 |. `1 k# F0 h, U, }3 ~/ N
  Loads are processed by each operator for the following time:
+ t, k; S0 B- K" @, U* K# u  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
! @2 N3 T% u6 Q2 }/ ?' M6 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.& [2 c5 h! e0 S5 l1 B+ S
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.& d0 s5 p2 z( w% [: L
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.: M6 z: V2 e* g/ T9 V+ C8 D
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问题:# B- J2 y& o& R! z' ?
After running the model for 10,000 days, what was the average number of loads in each process?/ A  u( m0 X/ t
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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
4 Y* n& b6 `# |% J. T8 cmove into Q_wait /*Capacity is infinte*/
" _  h$ |! C% g5 n/ {move into Q_process /*Single capacity*/: h! S7 p8 w: g" T2 g) J
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use R_A for n 60,10 min /*Resource A*/
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) G- \  S6 l9 Fsend to P_B
0 }# g- N- z* Xend, g& t! S: Z: h4 Y
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P_B and P_C is similar$ O: C8 V2 B% r8 z2 P
triangular 30,60,90 min
- k5 T3 I* S1 B+ V" tu 60,30 min7 ?1 G. P. t; v, b

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in P_C, you need to send to die.
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( O! C/ b9 X/ hThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.+ [1 i. h* W. w% I9 Q# S9 r

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  V( j" c7 A( i# c: ~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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