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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,
! I; v3 E9 m- i7 [, O( i  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.
5 J" f7 R: R) `4 y1 j- Z) \  Loads are processed by each operator for the following time:
2 v9 t( B+ i5 A3 O1 S6 F# d, l  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.3 t+ i9 J8 j' C; s3 k) ~
  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.; ]6 @: d% ~: U
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
) R1 G3 n+ s- ~& ]9 E4 dSend 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:& M' `4 s: U  N/ L
After running the model for 10,000 days, what was the average number of loads in each process?9 J# n3 z2 R' k$ G# D
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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) A% [  `* k+ `' L4 k
move into Q_wait /*Capacity is infinte*/, d' @' M0 r2 ]1 \5 @& }3 h" A
move into Q_process /*Single capacity*/! p5 }7 @7 \5 s2 g: C" k! o+ A

! O, x; x! }* K3 U. Guse R_A for n 60,10 min /*Resource A*/
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5 G! @- |- C+ d5 {send to P_B
: F6 x7 f  l: `1 |' N, Yend& ?1 J1 N; P2 G; G; t( W
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P_B and P_C is similar
; K: `8 I2 J4 N2 a  ]7 i. Ftriangular 30,60,90 min
1 T: n+ {1 Z+ Fu 60,30 min" O6 ?6 b$ ?/ j# J0 O

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( i, s) H" v2 |$ L3 fin P_C, you need to send to die.; [5 t4 }* S% x: I1 B! V5 ^
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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.+ A6 t" n; `  [# t8 p2 v$ x0 K
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, u1 g2 Z' f, Q, r* L+ RRemember 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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