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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,
) w3 k+ u+ R* N% A  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.
. c* ~5 G$ L$ `+ ]. c2 \  Loads are processed by each operator for the following time:' o& g  w! o" a/ f( M  m2 L) I
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
, l, G) W2 N5 e5 ?6 |% b: R# d  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.' \8 y* k$ }4 v8 a
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
. m9 [0 ?5 w4 p8 I3 }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.6 f, P3 g* R5 U" b- X
/ x* ~. ~: W3 R* {$ I. M4 {  r
问题:
0 j( P* b( W1 f, p3 NAfter running the model for 10,000 days, what was the average number of loads in each process?- F1 O8 L  V. n. X5 O7 P. a
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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 arriving
, }( g; [  @8 i/ Jmove into Q_wait /*Capacity is infinte*/
0 |  Q0 \1 }! v2 r7 ?0 \& Nmove into Q_process /*Single capacity*/+ m5 L* _3 j5 l1 |; A; v

' k! y4 g9 n1 _3 iuse R_A for n 60,10 min /*Resource A*/
9 F! S- v, y: K- F
& I6 O/ ], U" _8 Rsend to P_B
% d0 \; I) x, Z' j* E- tend
  ]2 v) f# |8 Y/ W) ~7 k, `+ t7 Z, T9 t
P_B and P_C is similar" a1 F1 F! z! |# A4 G% y$ E4 z
triangular 30,60,90 min; p3 C5 B( d; T  F* T$ Y# b9 e
u 60,30 min( R  f6 P4 ^* {4 D$ D% i

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in P_C, you need to send to die.' U2 i+ e- k: B

7 h) ~; I9 w# {- L2 @4 I2 k4 ]Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
' P+ m; w/ t3 P  f/ f) P. m* ]* S5 D' r, l  @% {2 W& F4 n

. B* t! j, G3 }" bRemember 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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