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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,# K* F9 M1 f/ j# i0 F( }
  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.
, s# i$ v- @5 X9 [$ L9 B& M" L" R, Q/ u  Loads are processed by each operator for the following time:
+ l+ I# i# _4 t% I& T  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.+ u, J" @8 U/ Q8 X$ c1 U4 B
  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." B- _) W; z; R8 K: Z. L& \( b
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.1 w( \% S4 T. c
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.$ r) B% L2 p9 Z! B1 U- f5 m# W

8 a8 p5 t8 w1 e* Q& p- j, Q4 h, c$ u问题:' R) ~9 W2 S& u# a
After running the model for 10,000 days, what was the average number of loads in each process?4 `6 C$ f  t5 A: B# |% u( E
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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 arriving5 L1 ~" f3 ?) R+ Z
move into Q_wait /*Capacity is infinte*/
7 d- i3 v* s2 x8 w' D; Jmove into Q_process /*Single capacity*/$ S8 |/ V3 T* o: {/ P1 g  j! K/ X7 ^

8 l: {  F  g: D$ C0 {$ euse R_A for n 60,10 min /*Resource A*/1 y6 n3 z) `4 V. F, K
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send to P_B0 ?! u& C; p2 C0 o2 K
end" j4 A9 f9 {' V8 }7 I; N) _

& o/ V) E7 |6 ?3 jP_B and P_C is similar1 Y. ~5 @5 R/ W; E5 h1 x
triangular 30,60,90 min/ }; z0 t1 ~% m  y6 L/ @0 J
u 60,30 min
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' g3 y: M% f6 L4 ^$ j: Hin P_C, you need to send to die.  w5 w0 w  c  y+ V1 O8 b( ^" B+ j6 k

1 G- l5 C7 r+ H- p+ g0 m: 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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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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