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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,! F% _. K8 P( G9 N( j
  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.
6 Q$ T  w" B4 u: n( ]/ ]! @3 z  Loads are processed by each operator for the following time:
9 n" s1 E2 a# @2 Y4 V  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
8 z) P; W7 t( i" h% \# ?9 v  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.! g2 H' N3 Y; G: R
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
5 [0 _/ L% N3 L3 q# JSend 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.9 e* S" j( d5 z' ~  V

$ T' z  g1 U* Z; Y: F. N问题:% w9 |  u$ e# s
After running the model for 10,000 days, what was the average number of loads in each process?
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% g( q) O+ U* {/ v* m' i+ T, j; t不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving0 |1 |; H! L* t) I* D4 y/ ^
move into Q_wait /*Capacity is infinte*/( K: {/ T) L" H$ Q
move into Q_process /*Single capacity*/9 ]+ X* n2 p4 r+ n3 Z" D2 u& p
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use R_A for n 60,10 min /*Resource A*/
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' z9 X! J) X% L0 w2 {9 Bsend to P_B
% y3 C' v5 O9 h. w8 I- Pend& t$ u6 V4 V8 G- U& |& q6 y# B

* x3 Q+ C& u- W* x$ ~P_B and P_C is similar) o, i. E7 k; L% E4 j  {: M
triangular 30,60,90 min
& H9 j' L1 q" a( K; c+ [7 Tu 60,30 min, u! r/ ~; Q. L% N
& F8 k$ k  Q8 f0 |# ?

  z0 q/ Q4 m$ @in P_C, you need to send to die.
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7 j4 ~& M3 c5 I7 j$ `Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.% U% u; U# P3 q/ c
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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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