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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) ^% @2 c$ ^. V' z  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.! T* E1 I( M" W' s5 f
  Loads are processed by each operator for the following time:
$ f" g6 B; M* y( O* R  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.0 ^! y$ Q( @- V( h) Q
  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.
. i: t0 S/ f9 J3 S  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.1 f! I* c( ^9 F# L& [/ T
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.
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' ~& Q( U- N1 w7 A0 q6 [: N问题:$ ?/ I  E5 O! p
After running the model for 10,000 days, what was the average number of loads in each process?
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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/ u  b; z; c/ Z7 |8 u
move into Q_wait /*Capacity is infinte*/8 F* M/ ^2 ]( n& g; F
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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9 o: B0 W! Y0 n1 [send to P_B+ M& ^4 b( P+ I
end: u+ q0 J. T4 P5 K- I$ l0 f

* c8 M( s/ w* w" ~8 f# P/ HP_B and P_C is similar
/ ~6 x8 J& O! \  etriangular 30,60,90 min- h0 A$ _6 C9 f& ?4 x! ~" C
u 60,30 min
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7 ^( s8 H6 G. \$ Y6 D1 i/ U* cin P_C, you need to send to die.
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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.$ M5 d& `" i% C, R% j' R

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$ A5 H1 T. j( v; b: IRemember 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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