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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,
% ?& d- ^  p) L* b0 G  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.8 i; N& [4 x' x- y
  Loads are processed by each operator for the following time:! G8 q' Q0 v. Q. L- T1 r
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.7 T5 X7 \9 \2 s, Y& Y0 {
  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.
9 r: f8 J+ x6 R; }  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
  }5 S8 ^* ^( a; j: FSend 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.
$ M: i; z0 Z+ N/ w3 j
& z$ e' V1 K+ k问题:
: x% i! H; D$ x  I5 UAfter running the model for 10,000 days, what was the average number of loads in each process?# t9 C! }+ l& X1 r/ u# O4 f
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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. {$ o# t$ ~. g2 R3 q5 v( L
move into Q_wait /*Capacity is infinte*/
8 l, M- _' w- J5 k: Ymove into Q_process /*Single capacity*/
% x' d  F3 O1 M0 s1 r5 F
, S8 h7 d% c/ X# a. A" @use R_A for n 60,10 min /*Resource A*/5 |- t* x: g+ v% f

7 i1 @/ C# ?4 z+ f1 k2 Osend to P_B
8 `$ @$ p+ y1 l) `end; i. \8 W% K2 z. d: w1 I8 a0 m: _
8 n: L5 ?* c& F1 D# w/ F3 q2 \
P_B and P_C is similar
' q+ P  N. Z, [; `triangular 30,60,90 min
0 g) `$ M3 y- ]u 60,30 min
  q4 B+ r0 d2 ]8 Q+ U" L
/ f$ V: d/ a+ ?, L; B9 K! B) G6 \
5 m6 V7 v1 B0 v9 L: f! ]2 ain P_C, you need to send to die.
4 R. c0 d1 z  [" s9 ]& l0 F" i6 o, }: U$ Y
Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.1 k- n! N' ~5 R( w7 C$ Z# s, @

( ]7 d' k$ M5 w) m
0 |; p/ R# s0 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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