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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,
/ u& E% I0 Y8 |4 @! y$ k  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 T0 e4 j5 V6 V7 i( i
  Loads are processed by each operator for the following time:! A" e( }1 S# }, b' H9 H
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.+ [( d; u0 q9 S/ D) D7 s8 G$ m
  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.
& p! M( z9 a$ L/ D  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
( }# H) d/ A$ ]6 z4 gSend 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.; w& {1 H" g, ~" O" L

" l0 E! g7 O  }) [4 X问题:
! E" c  p" s( T/ t& V! bAfter running the model for 10,000 days, what was the average number of loads in each process?" B/ m% o2 k! K- l. F

, ~$ D: P4 {0 X0 t! V不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving' `' G5 O1 e" {/ |; B
move into Q_wait /*Capacity is infinte*/
' N  E; A7 Q4 h- M% k6 B2 z2 k% Vmove into Q_process /*Single capacity*/% m7 c) W+ u" ~0 T, o. n

. V& i( A+ }- p3 Z) [3 H/ Buse R_A for n 60,10 min /*Resource A*/
- B( N  r5 G' \8 f" _- z
/ z4 V4 S8 t% C( J3 _send to P_B
! ^' v1 q0 e8 W+ Tend
& F4 P* O( D" x# p/ s" K# B; Q( x  j7 l+ i4 @* f
P_B and P_C is similar3 [* v* n5 }" X3 ]0 y+ |" u
triangular 30,60,90 min* f* P# `, F6 G5 K2 _! k1 W7 z
u 60,30 min
. ]8 ]9 Z! f, T& r% o8 Y' F/ j
5 W3 O& o8 c* \. F$ |2 O0 H* n9 _
5 O: N# b# W) S8 t* fin P_C, you need to send to die.
8 q) O1 m" k. a" k& i
3 ]! x. A4 j! n; r- c, [Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.5 j, c- p4 _9 g$ x" T5 N" d! C, I) ?
5 r( S4 \' y( @2 n/ ^& r( A. Z
1 }* g0 ]: W$ ~3 ]
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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