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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,
" Q+ M6 `# S* i( h3 q$ |4 A  x- g: L  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./ v2 Q5 f) q' N. k5 n* s  l
  Loads are processed by each operator for the following time:
) G* x4 g. S8 a6 A0 @7 a& a  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
  F: X& ~0 @( F: q% N' I# b  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.
2 v4 F  T. _4 @. Q2 L0 W  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
  t3 i% u+ |, W& i4 _' e, E- iSend 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.# o' \# F# C+ K3 B+ a7 o$ V9 \
0 X1 B  A' |- Z( n2 {
问题:# p# w1 y; R9 S# u" a8 K
After running the model for 10,000 days, what was the average number of loads in each process?
8 {- R: M9 g+ W( p- L! y! z; L* W: |% u/ T8 T0 u9 m4 T% ]9 l
不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving* C# X8 g* ]* C- h* E
move into Q_wait /*Capacity is infinte*/* D, T1 b( o; B3 i/ M' x
move into Q_process /*Single capacity*/
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$ v. x! e' j% }, q  V  a) D7 Ruse R_A for n 60,10 min /*Resource A*/
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: }* E7 \$ e8 U; x" hsend to P_B* Y. z: ~+ @- B" z$ e
end: s3 m! {: U8 ~

2 x, z5 m# ]; y- }- \& S8 ZP_B and P_C is similar$ C& O: y, m* o! S- J" z8 R
triangular 30,60,90 min
& d; L/ X( j& q6 Mu 60,30 min. w1 Q8 Q' i4 E! B
# O. ^9 z1 R4 v, I2 r: m

6 ^' C  n+ ^3 Q0 pin P_C, you need to send to die./ z: R9 G. @$ g4 f  F

3 [) ?9 ^2 G4 z* F  w1 CThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.; P( _$ f) D" V1 C1 ~* T

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+ k9 O) o8 K/ p: ?% `2 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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