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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 i' E+ \9 X: i2 u* i+ d- g' 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.
7 q* U: V/ w. O" y1 q  Loads are processed by each operator for the following time:
3 B" f. P* G; G. j- W  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 Q7 f  ^2 W/ ^0 R  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.
& s, a1 x% ?; L8 i* K) |9 Y+ v% d# d  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
# f  l4 \. n, N& ?; y* TSend 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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& S/ q$ m- x* A6 Q/ X问题:( O3 z( `4 N8 N( b  y. k1 d5 B
After running the model for 10,000 days, what was the average number of loads in each process?+ B" M0 U& Q! _# e
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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, a& u% T; k7 D/ H
move into Q_wait /*Capacity is infinte*/
$ y& d" x! l; u, W7 L1 E: y) Umove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/6 \. @" i# B1 w% |+ c8 v
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send to P_B. f6 _7 F. ?: V- ?
end; g  k+ K$ F6 C; }/ N6 q
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P_B and P_C is similar  s8 j6 C$ b; M0 a# s7 ]% L
triangular 30,60,90 min
7 R, S, R# r) o  L4 au 60,30 min% b2 A' B0 a6 j

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2 w0 X1 l: o/ m6 Q3 Uin P_C, you need to send to die.( s! J, Z( N3 m

0 _+ u; r3 Q. MThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.1 a1 f& \7 U' |1 c6 v

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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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