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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,* E5 f6 Y( X' o/ k; U6 J! |8 K
  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.
1 ?. o. M7 w0 F5 G' z( X% v! ~  Loads are processed by each operator for the following time:
- |' I9 U, c3 D) u$ Z. B  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.) R- }( C5 D; p  K, Y5 p, y
  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.8 _0 b, ^# W' ?6 [( D5 t
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 u  W( M  N' F! W* z' b  X, R
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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" r. q% b# }3 h5 O  N问题:
/ W/ I  f0 h6 DAfter running the model for 10,000 days, what was the average number of loads in each process?: r7 {  U, W+ H2 L7 n
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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
9 `" M* C$ F( }/ C) [/ Dmove into Q_wait /*Capacity is infinte*/2 p( j4 w4 l' J) l
move into Q_process /*Single capacity*/, V* h. e0 D  b* M* `9 N* J. s
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use R_A for n 60,10 min /*Resource A*/- z( y4 M  h. d) |# A" }

) j7 I: R2 F) L; `! @* dsend to P_B; B: C! E( d6 P# Z; J% A; T, B
end
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" H/ U' K1 x' J5 j3 A2 dP_B and P_C is similar1 D8 J' }6 e0 h' x( `6 `8 w; k
triangular 30,60,90 min
$ A1 p' ~, j" n1 o8 vu 60,30 min
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! {; C* v! f0 i/ Ain P_C, you need to send to die.
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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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! I5 ^0 E9 p! H; r4 I/ H7 ~. `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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