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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 ~; F  K" L/ X5 M# g* V
  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.
1 A1 H! D+ H9 m' D; \( ~( w1 V% F8 y  Loads are processed by each operator for the following time:
; m& ]- x* m, M- Q6 e  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.6 l1 R! w( ~/ c( @
  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.
% j% H8 n* W4 W  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.$ ^$ _, ]8 T& q
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.% p9 y9 ^9 Z! K6 Q  \

0 H3 q7 F& [* `' ]2 r# p问题:, @& t; C3 w0 x$ {4 i) p
After running the model for 10,000 days, what was the average number of loads in each process?- i* w: d) M; F" m

: T2 d# Q! s0 E/ f5 _不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving5 ~0 H& }. c( f
move into Q_wait /*Capacity is infinte*/
* d0 {2 O& r* y1 }move into Q_process /*Single capacity*/3 i- j6 `6 r4 J3 ~  q# _
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use R_A for n 60,10 min /*Resource A*/: {* z) J4 f: N0 E' C* H- [

. a! D  f4 n& ~! h( Zsend to P_B
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P_B and P_C is similar; j8 \0 l1 Q3 W( m1 |/ {7 a6 `  w6 B
triangular 30,60,90 min
, |- V' n4 X  g* m9 Hu 60,30 min
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2 }0 B0 ^! ]" }  D2 D
" f% D$ O* {- Kin P_C, you need to send to die.
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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( X( A% B. b' {& E8 b/ SRemember 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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