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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,
  d# L% V& u) w  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.
" q  p' [9 C2 r( [  Loads are processed by each operator for the following time:
; W/ @, H" D$ H* k$ s, q7 R  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.( I0 J* e& j& M4 b- u7 g
  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." J6 v" K" }$ I8 A% y
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
5 Q3 o- U" I. WSend 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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9 s' K$ H8 T8 R% D: V' a2 U问题:
/ r+ Z- k9 D! U: ?8 W' ?3 rAfter running the model for 10,000 days, what was the average number of loads in each process?
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' E5 _; o8 h4 Q# q/ t不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving) _3 l9 }7 U. L* c0 g6 H" {9 ~
move into Q_wait /*Capacity is infinte*/( @  F9 D- `) p0 n: F1 k" {
move into Q_process /*Single capacity*/
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, x* t  R% P7 Ouse R_A for n 60,10 min /*Resource A*/$ K. G* Z+ J- b: K& |" x5 V: ~

  `+ w, C" K  j0 K; y. d3 n2 a2 wsend to P_B
6 Y1 i, M' i& C& o+ V& qend6 t  [! |' u4 |& r$ `5 V

0 C" {4 H6 c$ X  q5 N) f7 LP_B and P_C is similar
! T! d) @3 H: l8 Striangular 30,60,90 min
: f0 v0 g2 |$ F& j5 Pu 60,30 min
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in P_C, you need to send to die.! f1 W/ F( [/ C: \% R
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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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& t- @5 C. r9 }' \0 s5 QRemember 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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