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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,
3 \& \2 O, `( B  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.
: h, B) @' [$ D3 r& V8 e' M  Loads are processed by each operator for the following time:5 `& b' j) [# ^# y& W/ T; V( e4 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 G' T0 \3 x0 U. x& U& X  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.) {* a) H9 o( b5 Y
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
2 U; L9 |1 O2 `9 ^: _* f3 R/ hSend 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.$ B3 w2 s: X* X1 [# a6 Z1 p9 S
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问题:2 Z% S3 Y8 I# F% n- t
After running the model for 10,000 days, what was the average number of loads in each process?+ @- B; d  U& ?/ R; R: _: u7 F

  }# }2 z3 n6 ?7 j- F3 Y- ?不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving+ h# u6 J: G6 d1 G3 V
move into Q_wait /*Capacity is infinte*/
# N' |  P* \  @4 e1 t) dmove into Q_process /*Single capacity*/
6 j# Q$ s4 F" [! N" R0 V2 [0 j6 k( T' E* R' J
use R_A for n 60,10 min /*Resource A*/
& q, ~2 E$ \: Y; x: M  M$ z! B
& J0 _5 @$ T/ X/ R1 k4 N# jsend to P_B
, Q6 G- {; _5 U1 u: {end7 p: [+ ?  f" D, f
8 C  [# k1 W, J3 P& v$ L: i
P_B and P_C is similar
' {* S) z5 U3 R$ A% U1 t8 ftriangular 30,60,90 min
: X) _+ X- J6 Y: [u 60,30 min% a4 }- |5 {; C; S1 Z8 J
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! j& Q4 B* l) f, s: f2 min P_C, you need to send to die.
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/ s+ D/ t2 X6 o  i) ~* V5 P, JThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.5 C- E) @. V( P6 X/ c- t/ T
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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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