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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,
6 |$ z/ ~- _4 ^0 m1 |8 h  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.
; Z1 F! g" |/ Q" h. `; L. k$ x  Loads are processed by each operator for the following time:
  F, ~4 `* D+ j! s$ }/ s  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
# b& J" `' P) H; J# E( k& e; Y5 q  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.% v+ s8 X) k  j
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
* m$ R1 C3 \3 CSend 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.
+ v' X7 S" ]5 G; r: j# }1 f$ p" x/ e2 |, e, ]
问题:
: z+ ^; b5 Y! TAfter running the model for 10,000 days, what was the average number of loads in each process?# s0 }. p. L; D! L9 x6 k( j  h. C

" W0 {* Q2 ^  s不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving0 j6 o3 P2 Z; m6 h
move into Q_wait /*Capacity is infinte*/
0 t: @4 W% R8 h5 Mmove into Q_process /*Single capacity*/3 d; I) K/ P" H, a0 L8 @
  ?2 a) n$ T5 X8 e: a
use R_A for n 60,10 min /*Resource A*/+ p* t$ ?$ m7 s$ G/ @/ g( M4 f

3 b9 S; x7 e! B# R1 ^# t4 B' rsend to P_B
! Z' V' `" Z2 ]" nend0 r9 _. _" z9 [6 D* n! q$ A) b
" a* P6 r! x+ a/ e3 y% [
P_B and P_C is similar
8 \! ]7 Y+ r& K# P2 J8 |) o" R1 }2 b" Ytriangular 30,60,90 min
) Y8 ~+ D$ n0 m1 w# y" O. Du 60,30 min, @7 V, n. r' X# p* ?
  [, E6 ^/ L9 m% ^8 Q
# D8 b/ S5 \) h
in P_C, you need to send to die.
6 g* t0 L# W& `* Y$ c* y5 f8 j( ~% [) W  q( i- T6 `: _
Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.7 ]( J, ?( S1 U9 J
. j: ~. Y' \4 _# v; u" f

( R9 U/ I- s6 _( A) [2 M* M3 e5 tRemember 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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