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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 o4 O9 X( r' B$ w9 `# 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.* z/ C3 Y! ?1 x7 H. a- J' P2 n* m
  Loads are processed by each operator for the following time:
) _. Q2 h) Y; M3 a5 }  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
6 Y6 t+ x0 n2 q- 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.' E2 E# l; n$ }
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins." d* f  f/ ]4 a% w3 M" s8 H  p! g4 P
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./ R. O6 A/ K2 K+ L3 Y; Y* X

9 o# n; a1 C: s- |: c' ~问题:0 S& ^2 z, l( c8 R
After running the model for 10,000 days, what was the average number of loads in each process?( x9 c3 @* t1 c  b* P

, C2 T3 X6 W( N# ]9 v- I5 ]不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving7 c, \' ^8 J" I# K) p; w4 }
move into Q_wait /*Capacity is infinte*/
0 y$ z* J' T3 r' E! a! ?. F" A' Imove into Q_process /*Single capacity*/! Y- b0 P9 X( e
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
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4 l$ ?. n  r/ Y! m( V: X, TP_B and P_C is similar( M' |+ X6 Y3 k* s
triangular 30,60,90 min
: y$ j& V. l" [0 R" A' P  V; ~u 60,30 min
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in 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.
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+ _$ u' D% b+ K% r) o7 {
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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