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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,5 G8 t& {& @7 H+ o9 _
  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 @1 z/ _: P) c0 O( m, m  Loads are processed by each operator for the following time:$ J- }% g4 |3 I8 Z/ G, U
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.! b4 T  b& Y, p- p6 P( N
  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.
- {; r  c; U0 ^9 o0 p7 C  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.3 Y/ J  w. [, H( j6 V* Y
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:3 C" c) k1 k3 A3 E, X  }
After running the model for 10,000 days, what was the average number of loads in each process?! i8 ~$ B8 A4 `% H. o0 \# Y
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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 r& w- N# `" Z' Z
move into Q_wait /*Capacity is infinte*/
* q$ [9 {5 \! M4 T* Kmove into Q_process /*Single capacity*/
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: c) v; c' X3 s9 ~9 Z1 cuse R_A for n 60,10 min /*Resource A*/* J- D& b. Q3 m
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send to P_B
1 e% d9 b8 z, C3 q. e7 eend# V3 _+ H" n$ Q( X
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P_B and P_C is similar
' x$ X8 J  L% J, `5 |3 n9 Btriangular 30,60,90 min
# W) b" A/ R7 _) m9 Ru 60,30 min
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% b0 K/ [( Q- O, z1 Yin P_C, you need to send to die., @* e, m5 x/ x, P+ y9 L$ M3 Z- ]
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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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, D# w9 J& _( b4 q+ c& |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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