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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," r, g4 f  r! F. ^- a4 _
  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.
& \, d0 y$ c# N1 {/ a  Loads are processed by each operator for the following time:
* Z( L$ E# L' i2 p4 [  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.# M* [6 h, u2 ]. U  m
  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.
* A8 x: X. [2 U( A- C! h9 Y  y  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
# b! o# X0 G0 }9 h* |% LSend 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., y5 k% |. k. K: s2 ~# \
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问题:, K7 s6 d+ r0 u. ]5 D
After 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
: z7 Z' X' d& i* l) mmove into Q_wait /*Capacity is infinte*/1 y0 r, C# U- s5 [
move into Q_process /*Single capacity*/. U( c; L  v) i: J
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use R_A for n 60,10 min /*Resource A*/! E$ s  H$ G2 y; x

; O- a2 K2 f5 z% U; Z& Bsend to P_B& u$ u" r/ X9 A3 \0 q
end
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  {5 F, w: l- j8 rP_B and P_C is similar1 A$ @- u% j! M4 i3 x: ?# S9 S- D$ R
triangular 30,60,90 min/ x( o. v+ Z# q' t% I0 s$ y
u 60,30 min
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! m  m$ r$ p/ sin P_C, you need to send to die.* A' D# b2 W! J! a: A7 L

& g: c  \4 B2 P1 w+ lThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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