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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,
. T0 Z  V2 h; V4 T& @5 {9 w  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.
9 J, n# U) W* b( i! x  Loads are processed by each operator for the following time:: [3 Y6 u& m' j5 J' O
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins./ ^. G7 D+ n9 j4 J
  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 s4 ?6 y: `+ |$ q% Q) l6 L
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.& T* {$ Y) ?; l# a
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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问题:
7 {8 V1 ]: U* r6 ^After running the model for 10,000 days, what was the average number of loads in each process?8 J5 l6 b, ?: I" D" Q/ `# i8 C
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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; H, b' D8 f6 m, B+ i' {
move into Q_wait /*Capacity is infinte*/
) }8 V' B& G7 g- S: T, a: f7 bmove into Q_process /*Single capacity*/, H! P( }5 y+ H
* ?9 Z) O6 a0 s) B
use R_A for n 60,10 min /*Resource A*/+ e/ \, A3 B/ k: ]5 o2 k' @  t

2 R1 |( E! o3 D0 z, B0 Dsend to P_B5 X5 t6 q: a2 r
end  w  `% N$ c1 F. x2 p* n( b3 ~
5 X2 H, ]% y' w2 q, G* Z, U
P_B and P_C is similar
$ x$ r& f- U- o4 b+ ntriangular 30,60,90 min4 c& |" |- M1 y, H- \
u 60,30 min
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5 x! F6 u  ^; H8 h$ g; t+ [0 m7 ^! bin P_C, you need to send to die.) B/ C& v: O, S6 O6 \

0 y/ }# w8 O) Y: q3 Q/ XThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.& k/ E$ ~5 I! e
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3 Z# n# K2 u+ a+ Q) ^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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