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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,; f9 J5 R+ ^+ K; }4 Q: D$ S& D
  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.
& Y1 b9 Z( f7 e. X& Z# v  Loads are processed by each operator for the following time:* h7 _) d8 |2 N
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.+ X& J" M5 ~4 A- n5 T4 g
  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.
( O; M$ i  O1 l6 r4 Y7 v  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
0 Q# D: x2 y4 U3 i# `, n3 dSend 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./ t8 c' H3 G0 _6 b2 c7 J
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问题:
% w3 Y' l: P  T% }7 WAfter running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
1 r0 \3 P9 C+ m3 J% g: ^move into Q_wait /*Capacity is infinte*/
# x' G8 W$ |  h/ l$ H' l9 {move into Q_process /*Single capacity*/
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( E% X3 D3 L5 A9 V# \use R_A for n 60,10 min /*Resource A*/
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send to P_B
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0 ]3 Z) P) d: r: ~6 Q) gP_B and P_C is similar5 \6 D6 ]' z5 {7 p( d% _5 L
triangular 30,60,90 min' m* ?# V: D3 M, [6 m
u 60,30 min* ]* f! f+ i8 f% H/ `& v. k
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in P_C, you need to send to die.) ]# N1 H+ c" x0 h3 e+ U: A( r
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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.& e& P5 I& |" h' L

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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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