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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,: G0 n* T# G) c$ s
  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.4 X; g2 J9 B  v- b+ f6 L# ?. P
  Loads are processed by each operator for the following time:* l5 x: K1 }0 b) i3 v8 @1 i
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
4 T; r7 [. c1 L9 O7 H* Y% 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.8 d# z" p" m: J6 \( B# B3 z
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
/ G5 a9 H/ n! u. ^' j9 n2 ]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." F! U8 N- K8 C% F! W0 `' ]

! L9 f) C9 l# U6 z问题:
4 F7 v% |! l, B4 X: n0 CAfter running the model for 10,000 days, what was the average number of loads in each process?
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
& f' {( [6 c% n+ nmove into Q_wait /*Capacity is infinte*/) j& z# @1 v. Y% b
move into Q_process /*Single capacity*/' ~6 _: h9 N' f4 X  k9 ^

" L- S- b! B" ]  Kuse R_A for n 60,10 min /*Resource A*/. U. V1 }; I, S( p) i9 y

- g! y9 g  L  [, D: \send to P_B; h+ `- N5 e% E5 R
end
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# V/ F( S1 N3 n8 D- W; C, a6 ~P_B and P_C is similar0 d7 Q. b* W9 j" |+ ]5 X. M
triangular 30,60,90 min% L" [, @( Z& }( b3 N
u 60,30 min
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" c& w( W/ Q# Rin P_C, you need to send to die.2 J" x5 J# \. X7 f: K' n

# l* R5 `1 s) s: IThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.$ F7 {7 i- _" G: ^
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( C- {) A7 ^  |' kRemember 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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