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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,
7 n4 _$ |1 R& `/ F  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.! n. D) v3 d5 ]7 W9 }5 I% T
  Loads are processed by each operator for the following time:  U1 Z( m! e. n/ I  R9 B
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.& M4 t- f1 o: U5 ?
  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 x9 I5 G( c2 O( k  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 T5 V$ R3 T8 C9 E3 Y9 s
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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问题:
+ `# p" n, y2 \, G8 L, @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
% p" e6 R% C, I2 C$ rmove into Q_wait /*Capacity is infinte*/7 s$ W! B( ~/ T4 P
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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! \4 g5 w8 U: f4 D- x" fsend to P_B3 z7 v7 g% y/ q/ L) M
end
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+ T/ u! b# L( t" A% z6 CP_B and P_C is similar' U$ Q) ^9 e& H; E
triangular 30,60,90 min
0 s9 ~: U/ o0 F/ [$ m% ~' mu 60,30 min
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+ |( }- E4 D7 H8 Rin P_C, you need to send to die.& Q8 p: x, ?. ~3 E1 q0 l6 i

" c" M- s/ h) F9 g# \- |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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: U( @' Y! Y* W0 Z& W- B0 FRemember 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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