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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 j, h+ O3 D" l3 `6 Z5 P
  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.
( O( J* k, P" ?% }. M6 ?' q3 Q  Loads are processed by each operator for the following time:
& \9 d8 w# |8 K  r  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.: ]1 z" A9 Y+ Z) M- j. S
  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.
  e& |: x' {. V# \( ?; ^5 g* P  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
! T8 |4 \% w# Z) t, H  `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.
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2 J$ X( N$ Q) v! c& @! E问题:
/ G. L6 {4 g# n4 g# N5 tAfter running the model for 10,000 days, what was the average number of loads in each process?# E! l! a) L8 q  k- Z) w$ I- R6 z6 Y

; s% F  v! J9 m; y9 I" j* T不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving: [4 B5 K: B" O: s% b9 Z) p
move into Q_wait /*Capacity is infinte*/8 P$ W! R  o9 [: a/ @' E
move into Q_process /*Single capacity*/4 I" G# }' l5 i$ `. w  j, }' }

+ R5 P* E2 C. Puse R_A for n 60,10 min /*Resource A*// g/ Q* s* ^9 B
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send to P_B; E) N; K& d5 K, |8 N2 N# _
end# e  Z  w3 _6 m* f; @' S

: s- q, F6 q4 Z- d8 @# X0 Z$ ]P_B and P_C is similar7 l: A/ k6 y( ~1 U" b( ]
triangular 30,60,90 min
" Q) a- {2 k& Q/ X$ {u 60,30 min% ]1 u, z/ F: w+ B' O/ S# [4 Z

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in P_C, you need to send to die.# W' Q# D' m% R

) a& g& j3 s- Y+ v7 w% AThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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* J' q& l  d( q% d5 N% W0 jRemember 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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