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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,* h( ?8 Z1 C$ ~, h7 ^- }
  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 D+ Z/ `2 J4 x4 ~# N
  Loads are processed by each operator for the following time:
( c9 S) [* P) g3 F1 h# A( x  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
: A6 }: {6 o- z/ r! d7 P8 G  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.
- w' x/ D$ g# ]  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
/ W$ M5 B- E0 tSend 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." j8 K( }" H) U1 V/ C
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问题:
* X; h& {, y3 \After running the model for 10,000 days, what was the average number of loads in each process?: x: e% c" p9 U! x/ j: i8 S

& L1 V( X" [$ ?, D4 A. {9 v. u9 {7 F不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
: G7 A4 @7 M* [* ~: z5 [move into Q_wait /*Capacity is infinte*/; p1 i: A9 Z. R! J/ C
move into Q_process /*Single capacity*/* g' S- o8 C# Q, H. D$ o

: E; X: Z0 _( l7 t2 luse R_A for n 60,10 min /*Resource A*/
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1 ?6 }7 O0 c- G2 A. e" Z1 p0 F/ g. o0 fsend to P_B/ k: ^0 `2 y8 Q/ x5 {" S
end2 _# S7 d% H" E: E7 X- S
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P_B and P_C is similar5 Q, E  b% I. K- \: D
triangular 30,60,90 min7 s& J! {5 E! b" s
u 60,30 min
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in P_C, you need to send to die.
' _7 \; B/ ^. H( Z$ D  ]- u
# s# V) `% D% q/ G6 K3 xThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days." q' R5 U+ F& A. _' \

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. f3 Z+ |- F/ t/ 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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