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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,
7 P# d3 K5 y$ y8 D/ ?8 [  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.
, c  D* ^3 q( \5 A8 o4 Y  Loads are processed by each operator for the following time:
9 O& L% d- e6 k: Z& Z/ z3 G  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.! o+ F7 m* k- l8 A% b0 c* x
  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.( O. K6 m0 C# @3 @; c
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.! o1 o. e2 p6 L* J/ @4 `! d( W
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 o. q( B9 l- K, i

6 [0 [, E: K( Y0 ~问题:
9 s0 ?1 t1 D9 d, z  u: lAfter running the model for 10,000 days, what was the average number of loads in each process?7 {- Z* P; ?! I3 Y# q  w$ R2 `8 p

& V5 A1 a; d$ O% [7 e不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
. P4 U/ d/ G3 `4 M6 w+ T: Ymove into Q_wait /*Capacity is infinte*/4 K% K  M5 p3 i* V
move into Q_process /*Single capacity*/+ Q5 q$ s  _9 H+ W% F% `

/ ]  X% A7 l" E8 ^use R_A for n 60,10 min /*Resource A*/
; [& t2 I8 N/ y5 T  j0 V
- |2 M5 E5 B* b: W! C. |  Ssend to P_B
- z& m& ^3 W- V6 Y' c3 i# X1 T6 o5 Xend+ ^7 r, i( Q; E) f

& T! \- n! [6 x+ FP_B and P_C is similar1 I# O* {' h4 J: Q
triangular 30,60,90 min& ]1 e" ]5 P4 W. W& A  v0 w# H
u 60,30 min& @3 I1 K* I7 r" v. c

2 }- r" E- L/ d) |8 R+ d
3 d' Y. ]* K& S9 U$ yin P_C, you need to send to die.
' O% ^4 @0 D  J$ f' D3 N! a9 ^$ ^7 G) o) f, m; n) A
Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.6 u0 g2 g. y! \; `  v9 M; k$ u
+ l; `( N; A, x! q

/ ?% w4 p  E  X0 M3 m6 ]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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