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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,
: O1 ]9 G2 X) p6 e4 I% E8 i9 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.
  R8 J1 S: x: t* h- Q# _( _% h  M  Loads are processed by each operator for the following time:; F* T7 t  r( R% Q, f
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.# A$ B  [2 o5 Y* w
  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.
& w0 n( D% `3 M0 Q; p0 X' d6 }; N4 Z  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.& M& r4 j8 ~9 Z. g5 u0 g) ~
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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, J0 g; [; K4 t0 V9 e/ J! g问题:4 W% \% J: R9 e: J6 Z/ v% J& [( F' g- w
After running the model for 10,000 days, what was the average number of loads in each process?% J  Q- x& H" |/ G1 M* R9 r% o

, [/ r9 j/ P6 o" Y" S  `: F不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
& A& B' c' u8 f% emove into Q_wait /*Capacity is infinte*/
8 A' J" t8 h! n8 |( @# fmove into Q_process /*Single capacity*/
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% i6 E' t8 u9 P6 `7 I4 nuse R_A for n 60,10 min /*Resource A*/
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* w7 C# `/ P0 vsend to P_B6 _6 {- T& V0 b! L
end
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; ?2 y8 c$ E1 v3 W( tP_B and P_C is similar
" m3 Q1 m3 d7 {9 [1 striangular 30,60,90 min
. b- `4 h+ b. V4 G4 U/ Lu 60,30 min6 }, r# P  Y) r+ t; q0 ^
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in P_C, you need to send to die.* \7 {1 s% ~: n/ h- O+ X
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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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( l, z# a; ^' NRemember 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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