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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," z" \+ p, r3 N) X' |
  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.+ E# n$ K5 Q+ ~# ~+ L
  Loads are processed by each operator for the following time:
1 I& n+ X1 F) v% E) f- }  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
+ M' a2 C1 y( H/ i  Q  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." f/ ]# @# O5 A' c
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.: i* F/ f2 q# c9 o
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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( ?- I$ D" |, _5 Q' q$ k8 l问题:
7 n/ t% T& p; A! Y9 M% _8 ]After running the model for 10,000 days, what was the average number of loads in each process?
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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  X# e/ M$ [- ^0 r3 E
move into Q_wait /*Capacity is infinte*/: E" ^0 L5 w* @: q: _  g
move into Q_process /*Single capacity*/) M( c" r2 i, g1 f4 G$ E; f

% k" E& v9 R5 }# P0 `use R_A for n 60,10 min /*Resource A*/- ^" {5 b3 k  K$ R+ @
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send to P_B; P; u2 ?) V/ H, Z
end2 r. A" {! d$ D, [! d
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P_B and P_C is similar8 x, c4 r3 w$ F% s/ V# N
triangular 30,60,90 min/ |4 e4 s! t* q, Y8 |. J
u 60,30 min
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. V! x, K2 l, ]: j4 I4 z" [in P_C, you need to send to die.
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5 X! ~8 Z' a) V2 JThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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8 q! A3 O. {- K5 S0 FRemember 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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