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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,
5 I4 V" D0 s! S. b  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.
: I- Z* m% q3 t! ^$ R' [9 g' |  Loads are processed by each operator for the following time:# y6 ?( r% z' j" ?
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
+ l) s9 `5 V. a' Z0 F  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.5 y- W+ K3 ~) o4 G/ A; E, I& Z& r
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.7 h; }" n! c* ]- n  T* S" x( [, U
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.5 a, u+ s9 H# f
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问题:
( ?" B$ c+ {- u" wAfter 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# H- O5 ^+ \' C  R4 Q
move into Q_wait /*Capacity is infinte*/
& H. O0 s) [$ o' Z/ {' g% s, lmove into Q_process /*Single capacity*/
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1 h  J. G: c/ ]6 S# d! ouse R_A for n 60,10 min /*Resource A*/
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+ }1 {% c6 \" k: N: y0 s% Msend to P_B
& d4 T& Q6 V/ j$ k  fend* C+ m  r. B6 ]8 T
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P_B and P_C is similar
; X) F1 h# F5 U1 ftriangular 30,60,90 min5 j5 B# \5 S0 C
u 60,30 min" j0 s: _. n2 O6 D3 x: U# C
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) W* I% D5 u8 S% Z. pin P_C, you need to send to die., P3 r" k7 o9 H* i
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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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  T- H4 i! [6 r- g# `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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