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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,
, f# }7 m$ V. o( i# L- b" w  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.8 c4 j( W0 D8 e
  Loads are processed by each operator for the following time:
( H& _" l& I0 U  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.+ I$ C5 Z" z" Y2 [  b* T2 H
  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.# h! o5 q+ z) o! }, @
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.6 i/ d; v: G9 U, [  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.+ D- _* A( s' `* A5 F
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问题:
% u, L& g/ J5 B6 g4 {7 b) n3 WAfter running the model for 10,000 days, what was the average number of loads in each process?
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: \+ s+ n2 q$ V+ C3 m0 n/ R不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving2 P2 M0 l, o. G. ?: ]
move into Q_wait /*Capacity is infinte*/8 O. j; c, D6 z1 j
move into Q_process /*Single capacity*/
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" B0 w) M9 M" }- E) n4 R8 J) v1 E7 Quse R_A for n 60,10 min /*Resource A*// Z: @& h* f9 {1 y. ~

8 [' F" S8 _. a  X) ^send to P_B3 |) I: b6 `5 J3 X: m; |/ T
end+ V0 t- x5 B# T! E! b
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P_B and P_C is similar. O$ V& G) f8 j) G! z5 Z" J
triangular 30,60,90 min: v. H/ q0 S- B; M$ f% Y0 e
u 60,30 min* H# Z' M! P+ N/ N9 R

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in P_C, you need to send to die.$ j  F4 n( K' p
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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." d' U: X+ q& Q; F6 k8 U
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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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