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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 {8 w1 v) N* V
  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.& r4 x$ O/ T' A' l+ m
  Loads are processed by each operator for the following time:$ I3 J- N- f# n7 E$ ]7 |+ o8 M
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
0 ~8 V* C# l# u1 ?/ M3 z$ h  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.
$ n& G( S; m5 d6 c  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.' v6 Q( C% c! p( x4 n5 o
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.0 _. `( S4 ]; u0 D0 c
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问题:
8 R. A$ d* U$ c4 G* F2 iAfter running the model for 10,000 days, what was the average number of loads in each process?
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# x( z  u% [' ?# i& a不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
! w" h# r. \2 N  a* I8 D( q2 o; {move into Q_wait /*Capacity is infinte*/3 Z& A' c7 _  q& p; h2 n
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/9 ^; D: q+ d! `' h; r0 ~$ ~

& n1 o$ W2 r9 n: s" nsend to P_B
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9 T1 s: D( ~; v' Q! YP_B and P_C is similar% Q4 C' W& J2 ?" @
triangular 30,60,90 min( G$ \. Y/ x+ E3 ^
u 60,30 min
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7 Y* b9 r+ a- Oin P_C, you need to send to die.8 q2 Y; F9 X% }( \1 F3 \- W
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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.) _3 ~. B8 y' _# j
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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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