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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,
, O. d7 K0 t$ h! q  m  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.6 |/ k  f% M# V# x; f
  Loads are processed by each operator for the following time:
4 p4 |  m# C, n6 ]7 h  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.5 i( e) ^5 B% g) T$ M
  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.
. D7 P- H0 A+ f" ~# [& I7 {$ L  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
9 A  k1 D; w) f/ W* U2 SSend 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:
+ p1 |4 E) L$ C! I4 U& gAfter running the model for 10,000 days, what was the average number of loads in each process?8 V3 o+ i1 D: d+ Y

  B4 D! p; Q) s9 K) p不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving) r% y) |% m' [' U1 S' f# k
move into Q_wait /*Capacity is infinte*/% V8 H" b: [# w4 y6 D7 T6 w
move into Q_process /*Single capacity*/! @  E1 W! m. ]# }+ j$ @3 V' Y8 z
% ]$ ^( S  \8 D- L) s$ y! M
use R_A for n 60,10 min /*Resource A*/
" \( ?7 O# A, r' B9 j! Z- m" w4 i- w* e2 p1 W4 b
send to P_B
& `$ P5 c2 x( \* u3 R1 S2 s  r1 Oend: b1 y/ \# y5 J: o2 N2 v# b3 @

1 r) D$ u! C# W6 k& x! ]P_B and P_C is similar5 `5 u" z; u3 q# v4 ]+ Z
triangular 30,60,90 min
9 Y( q. _* s3 X  {u 60,30 min! f. m  [2 @) R+ C

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in P_C, you need to send to die., q* a% j: e5 i0 C) r7 m) ]0 {

) U3 l7 }4 O: a2 x% @0 a4 S7 D5 SThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.0 B1 s; J3 r% [# k- Q

3 {- r: k. w6 U" ~8 B  W0 ?; M: Q; o8 Y! b4 B. v
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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