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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,
" @. B# ?9 A- _$ r  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.( A( w: D0 ^+ E" z
  Loads are processed by each operator for the following time:- U+ o: f3 R  j. j6 q( T
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.# b% q1 ~/ u/ S" F* }
  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.
6 K$ o/ Y0 g$ }) w9 g1 A  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.& Y; K" M6 i* d; E; _# N
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! N$ L- D$ D; ]5 P0 O

" b# T( V! ]; O1 F0 \( H. p6 q问题:/ N4 |  I; i, T" k
After running the model for 10,000 days, what was the average number of loads in each process?
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2 L# c* R8 u, S不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving+ i  c- n% i  M% U$ e$ |- O
move into Q_wait /*Capacity is infinte*/; p; f! F  O8 N4 C7 A) L5 U4 D
move into Q_process /*Single capacity*/: m1 Z: m& z7 g3 p( M6 L

7 P. C+ g& a9 x* D9 l  Tuse R_A for n 60,10 min /*Resource A*/" H( Y8 h! l' s- [- p7 P3 c3 w" i+ g

% A: \2 k  z5 C# isend to P_B
8 ]3 [6 t2 T/ `# u7 fend
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P_B and P_C is similar+ u" K3 q: k+ g; o
triangular 30,60,90 min: N! G# i/ I9 B* T- D% `, ?
u 60,30 min& x9 }" i' U4 f2 h
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in P_C, you need to send to die.
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  W3 r" E8 Y7 w; b9 T4 F2 b5 mThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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. b5 y  H& Z& g2 E' {# u1 B. q6 JRemember 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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