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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,8 y. D2 N( `5 V! s# U& N- V
  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.; w0 q& a4 m# ^, k6 t% M2 \
  Loads are processed by each operator for the following time:. ~4 M( W- J. `, J8 l% r
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.! D2 z8 {, X$ o
  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.7 w5 j) l% N" g' X1 U0 {+ V
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
: v8 S9 N/ [3 w$ HSend 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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8 e' f3 P$ B" ^问题:
. h& p+ m# r/ L( D# r; SAfter running the model for 10,000 days, what was the average number of loads in each process?, W( h* P% }3 Y

# u1 B. s: t2 g8 ?2 B- {4 L不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving! U: G" c, c& r4 r: h- n! l
move into Q_wait /*Capacity is infinte*/5 S3 R3 W* y2 ?, @( K/ K/ L
move into Q_process /*Single capacity*/
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/ v4 T* b8 a  `9 H8 Z8 [$ b" buse R_A for n 60,10 min /*Resource A*/
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send to P_B% k5 }5 s: u0 Z- Y
end
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P_B and P_C is similar
* E) A7 V* k- y8 K2 ltriangular 30,60,90 min* V3 q. D5 n3 i# l5 K: @; u
u 60,30 min& v. |: X' ]. a9 E& z) P

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in P_C, you need to send to die.% J. n2 }0 D0 |, o+ o$ a: G) w
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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.) G+ Y# e8 d4 t% h7 K- o- _. l3 d
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3 n7 m8 L2 X1 J1 BRemember 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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