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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,
4 n) E1 f9 K3 B# |* y. 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.% ?) s2 Y: O! P& K: p
  Loads are processed by each operator for the following time:- ~3 X+ h2 A' p6 z' P6 f; f
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
- J4 b7 ^# `- D  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.$ J( @6 s% j; `& F( }% h( G' ?$ D
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.8 i3 R  j9 Z$ v
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.0 j% S- j" N' x

0 K) D: u' s$ @! I% K' ?问题:8 ^1 i# D! N' w2 ?- ~  p9 r, _
After running the model for 10,000 days, what was the average number of loads in each process?# ^. a' y; r" {" C, V! N
# Y7 @  B0 I# [$ }% r
不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
9 f+ C" X3 @1 F. U, B2 c* ^move into Q_wait /*Capacity is infinte*/
  u( Y- ?1 R1 U. N* ]0 X8 u6 cmove into Q_process /*Single capacity*/
% k! }3 S7 ^4 X/ k# r# e& R, @: l5 |0 y% P$ c& G2 Y# q
use R_A for n 60,10 min /*Resource A*/
7 u$ l: }6 r: o+ Z5 i* E* ^: J/ x4 n1 X5 F) X. \# Z( Q
send to P_B
! J$ j% V2 c% g! W; e4 m, k$ n+ t% Gend& N/ z/ C4 W& X% B" T2 q9 K

- v. V  W5 k, p+ F$ \- BP_B and P_C is similar
7 Y) H! d/ b  o6 a1 ftriangular 30,60,90 min& I* F1 \& p/ Q
u 60,30 min0 y5 |2 ]9 J* {3 N

  V: t  e+ o- I: u
6 T# j/ H9 ]7 _% Ain P_C, you need to send to die.6 b2 _! r- E; @( ^! k. N

- g% x0 X# k% v6 TThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.5 Z* D- `0 Y# A" h' e( e: F5 t' X
' p1 J1 l: C7 H1 {7 C* ~3 q+ I1 n0 E

* M, B; _  v! `) }8 dRemember 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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