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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,
- q" h: W+ t6 D  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.6 r" J# r! M  k- z& l
  Loads are processed by each operator for the following time:# D, W/ k2 A- s. x8 [4 h1 h. l
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
. k  Z& N5 @4 `  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 b6 s! i* D- e( r  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.& }# X& ^( \) {) ^& @- z
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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! }  f" k9 p) K7 }1 m% W问题:. p1 V9 A0 r6 c! G
After running the model for 10,000 days, what was the average number of loads in each process?
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% E0 i9 z- k3 H2 Z! K+ b  U. r; C不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
/ J$ I7 [8 {- X) W, Z# rmove into Q_wait /*Capacity is infinte*/7 K7 @5 o, @8 n/ o
move into Q_process /*Single capacity*/$ A* W; {- w& M. r) `$ x

6 }8 b1 Y) l% i* I! L9 puse R_A for n 60,10 min /*Resource A*/* t- |7 ^# z: E" Z+ P- o/ l

7 P0 z6 Z6 x8 k2 C, Osend to P_B
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4 A, [/ f+ e. FP_B and P_C is similar
5 u. d" W* Z. D0 ]4 A" Qtriangular 30,60,90 min
5 m( N" w- F) i% [' d+ D& o, V$ ?u 60,30 min2 c5 Z" @9 i  @
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4 l$ A. s! N( e* Q( E6 ?in P_C, you need to send to die.
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8 L* H5 y, X% `7 @( 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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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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