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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,
) B* f2 E4 a8 X8 c* d. N. b  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.5 j8 _" W( ^- a# M) `+ X2 h
  Loads are processed by each operator for the following time:
( F: ?+ L3 z8 S  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins., ]! i( w$ @4 C& f9 y
  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.6 z6 F& j0 b5 z. n# ~5 J( W
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
  y, D; X4 ]  t" X, X4 u: USend 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.
5 I- Z# a+ ]8 J/ i& z7 p
* j# V9 e8 B. U; G0 u8 S- O& P3 S问题:
6 ^. @0 x5 r! d& [) V* V$ b' U; K8 ^After running the model for 10,000 days, what was the average number of loads in each process?, @6 ^4 X. {) b0 ?4 d
* a5 [" K9 c8 o- w* ^! z3 U
不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
1 y2 g: W# t9 \" emove into Q_wait /*Capacity is infinte*/
+ |7 X) x$ k2 vmove into Q_process /*Single capacity*/
( |2 i# c2 P, h; r9 v# {+ ~. J4 ~8 o
use R_A for n 60,10 min /*Resource A*/9 X2 f+ E7 m& H# p" f

6 N9 T7 ?& M& Q; Y5 d+ C, C' bsend to P_B% d" \6 o2 `( ^/ C
end! ]- o1 f9 `1 Q* a$ E% X( q

( F  z& ~2 m1 k, z! N. @P_B and P_C is similar
$ l, H- P. }; B  mtriangular 30,60,90 min; V: |8 X7 e5 O
u 60,30 min+ E' a% M" g' `7 z2 C% G- E
+ T  ]; b4 _# g5 t* f3 @; Y* V" i

0 ^- V" q: y0 p0 H! j3 Hin P_C, you need to send to die.4 n/ R' U" ~5 w% a6 w- c
  w' g  B  W# u! h" f) D
Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.7 G2 v# I0 D6 i& g/ X% h

7 J3 e' Y3 q$ ~: ]0 K. ]
$ S, }4 j$ V4 m* u; g) h& GRemember 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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