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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,$ `4 [* {: w+ }, ?  S
  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.
. U, d5 ~! o4 \, ^2 r3 b& X. [9 g  ]  Loads are processed by each operator for the following time:2 t  v9 `2 j1 F" }! d; X/ r  ~
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.' D5 @5 ]) m& ]) u# f6 D* I
  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.9 [$ r, x' D  i" E$ D% \
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.3 j: u& }8 T. ?
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.- D1 o- b! h: T# e; V+ U
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问题:, V( P* O6 G; q/ z5 V8 M3 Y
After running the model for 10,000 days, what was the average number of loads in each process?; V* g5 ~" [6 ?# H7 `' B
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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: C$ A5 q+ M- r, B$ h0 g) @9 Y
move into Q_wait /*Capacity is infinte*/9 _4 l( G) p+ u( a2 g7 ~
move into Q_process /*Single capacity*/
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1 b# c+ I: R; b: {4 |) Yuse R_A for n 60,10 min /*Resource A*/
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/ V* h$ h2 e/ Usend to P_B
- v# w& b. _8 M0 O  ~end
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P_B and P_C is similar
1 Z* n2 ~2 ?! F( Qtriangular 30,60,90 min
: f8 E0 i9 Y: e& W3 N* D* y$ `- ju 60,30 min: b' b3 q8 e# {5 z
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in P_C, you need to send to die.
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( a/ m: r( W, f9 }' ?  d& f5 HThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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; L. a0 u1 E$ Q9 @& T; u/ uRemember 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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