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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,
* b+ f2 M5 y( [2 _; i  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.
& p0 O' c# W6 Z, r  Loads are processed by each operator for the following time:
' P1 h7 x! b  z9 z5 g  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 _5 Z7 Y8 O8 X4 Y3 y2 k  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.# g, W: r! ?( w! a4 Z$ t7 R9 q' d
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
: y, Q; q+ f/ c' h4 \5 bSend 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.+ [$ Y) m/ K- D- z7 c
: b) s) z3 \5 B; g1 ?( s. M! ~: O* d
问题:2 ^: @! ~2 J2 G6 `; @7 K  z. u# n
After running the model for 10,000 days, what was the average number of loads in each process?# P7 L2 G% R0 ~/ H! D' R: p

$ {4 L+ R+ U) _7 h& p: C1 C不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving/ N$ Q6 R1 C5 |& C
move into Q_wait /*Capacity is infinte*/: c% s: q! W+ }7 @
move into Q_process /*Single capacity*/' O1 C" v) @: J) H# z

* [; ^0 i/ Z, n8 {: p( |; t/ }use R_A for n 60,10 min /*Resource A*// C5 g  s' ^  T% V& K% V7 U/ b& E8 `
5 o, J5 W9 O# N  N2 y
send to P_B
' F. {/ P+ Y! jend3 a& p4 r4 V# O& c

6 z; i% a( n" O! d9 A' P! S& aP_B and P_C is similar
/ Z; w( Y+ u3 ?& f7 |triangular 30,60,90 min
$ ]/ {  {5 P4 [( L( R$ \u 60,30 min) d/ i: ^) W( ?
) W. h: [7 N# d

5 D9 J' X: x7 D' h' h& cin P_C, you need to send to die.( f: Q4 ^7 b# j; e5 A* J# [

6 S% k* d! Y+ I8 D9 D6 ^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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  a' |2 i+ J; U4 c: @8 x" ^4 u& f7 L0 t+ ^9 \8 j
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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