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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,
6 Z( l, j! g7 w1 p  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.
6 U9 f% Z4 \' A! \; B4 U  Loads are processed by each operator for the following time:
0 J% M8 \5 A2 R2 y8 a6 @4 X  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 L4 ~7 Y1 D3 S' M7 P  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+ V! F+ J) m& `1 u/ G
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
$ L) c: c3 [' B; j5 i% `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:' H  B$ v8 Z) q; h) a* N$ U" Q* P
After running the model for 10,000 days, what was the average number of loads in each process?3 B+ X) R! J$ ]( [( f$ X- v. j
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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
5 e% ]1 c: `( e! }% r3 l+ X! q1 p! t. [move into Q_wait /*Capacity is infinte*/$ e# h- m( n8 ?9 c8 ^
move into Q_process /*Single capacity*/2 M$ v( ]% d2 w
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use R_A for n 60,10 min /*Resource A*/3 S/ P  A* F2 N: F9 d
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send to P_B
: w! r6 \$ W0 ]/ P7 H' r% qend
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P_B and P_C is similar
* [+ D( I' [& P, Btriangular 30,60,90 min- r, Z, o1 c* u
u 60,30 min
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in P_C, you need to send to die.2 z) X# a; l  R* G5 D6 _
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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.. H4 O2 G6 C, p2 \4 A- r8 B
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7 i% O  _: s8 ?/ c5 gRemember 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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