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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* ^# Z8 |! e& V1 R, U( C1 R
  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.
! p7 `. d( p1 k. C3 y1 b1 |9 B; {  Loads are processed by each operator for the following time:
  q$ d0 K# Y7 g  h+ h7 B, 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 L2 ?$ J6 ]5 X, c0 _# S% }
  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; h5 c) T4 x. O* Z; t' h
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ u3 b0 w% S- A0 \, w0 L. [
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.# G+ w! w- e6 M) R  x+ Q
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问题:
8 D5 ?! o; V/ e/ v' x$ x' bAfter running the model for 10,000 days, what was the average number of loads in each process?7 z/ W% W% m0 z! x* i. i5 T8 a
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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
. e5 i. o5 p+ B- \# S+ O$ q* imove into Q_wait /*Capacity is infinte*/
3 [- H2 H7 f% R# A3 omove into Q_process /*Single capacity*/
! ^7 t- A+ B0 h3 v3 y
6 c1 f  _1 P* Euse R_A for n 60,10 min /*Resource A*/0 z, G6 t3 R3 P' N% o+ l

( P* }2 r7 f/ h- m7 x: {1 asend to P_B
5 @+ C! }0 _/ x" R- A: \/ z7 Nend. I( _1 E/ P) S

3 p% w& U8 j( |5 _  Q, jP_B and P_C is similar
$ h0 g/ d/ N! r7 f/ otriangular 30,60,90 min; V; z4 [2 M9 Z% T. s# M
u 60,30 min6 c! @2 `( o3 j$ W3 ?& `; N: X

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in P_C, you need to send to die.
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! l# n8 j* P8 D1 s- z9 `2 N( TThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.# k3 |% V$ S$ Q# M- U" ^- k

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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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