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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,4 N4 l1 e7 M4 J4 q
  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.
# e1 y/ f+ z9 z" p2 U. a! |& g6 C  Loads are processed by each operator for the following time:
# Q) A, J' Y& p  O& N. m( M  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.  i( i2 D7 W6 m! n
  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.- ^" K  a* {5 X! v: s
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
, @4 z4 z4 u% zSend 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.+ U3 d  E* a% Y' o; ~  ~- I

; o8 X) V: U, g) m7 K# O* w问题:
( K+ f9 y- I0 K1 N$ GAfter running the model for 10,000 days, what was the average number of loads in each process?+ {$ ^$ e  v) u' A8 t+ Y' W
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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
1 p0 v1 c) t9 k! h6 X* L; g8 Hmove into Q_wait /*Capacity is infinte*/
% h6 F' p+ G6 U( Amove into Q_process /*Single capacity*/1 @0 j$ Q+ s) T6 Y

' \4 B! K% \- @3 ]use R_A for n 60,10 min /*Resource A*/2 ^& b; a9 T5 ]% E4 |

6 H' |2 D! Q8 Y5 Y9 msend to P_B* n* I* g" W& x0 c# U% v
end7 k( Y$ m% \/ s

: [& @1 D+ s# D9 r# ~( VP_B and P_C is similar
$ r( N1 H0 H0 o+ U4 x* x* [triangular 30,60,90 min. E  Q$ x. \$ x. s+ S
u 60,30 min. m6 x* _2 ]% B. q, P
: a9 c# E4 w9 n# X. K

- l$ p1 P7 E& x8 F0 \$ o4 ein P_C, you need to send to die./ P! C& o3 L$ i. y
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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