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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,( |" R& n; U9 _# I7 Y+ L8 D  P* d
  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.; f0 E2 h3 i' c8 b: c
  Loads are processed by each operator for the following time:
1 `$ i1 v/ q/ }7 N* p  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
! R0 b& x* U) e: ]  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.
" K* J7 |2 y% t) J. Z" Y: _  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
$ x. [/ }( n4 r' ]6 ^& K( d+ MSend 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:
* j* c! K8 S  aAfter running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
) _# P  d- Z- t% V0 Hmove into Q_wait /*Capacity is infinte*/
' a6 G" w) q% {! Amove into Q_process /*Single capacity*/: ~3 q2 Y8 X+ m6 u1 @* r1 P
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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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9 b, _- _+ r& Z& y# S3 j* }P_B and P_C is similar
& }+ i! V6 F4 J0 ~triangular 30,60,90 min
0 @: G4 o: p; K' V) t, gu 60,30 min
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in P_C, you need to send to die.
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0 e6 o* M& y. YThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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