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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,
! P4 h' l7 x4 D9 u1 ]* E  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.& F4 N0 [! H# M
  Loads are processed by each operator for the following time:( A, K, p: o# b" E6 C; Z6 H
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
' ?( Y7 d& d& H  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.- v) P: X9 C* `3 _, B
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
3 M# p2 r& q; w8 J2 T) YSend 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.* e. f- p6 `, y! ^. v9 J7 u) B

1 N0 X" k) W4 m+ n问题:
0 p, p" @( ^( V4 N7 R$ d+ qAfter 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 arriving8 s# G0 o- k1 z
move into Q_wait /*Capacity is infinte*/
% N* I7 T# H% Z/ `/ X2 C' Bmove into Q_process /*Single capacity*/" j6 u. p) L; i! E- ~: r
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use R_A for n 60,10 min /*Resource A*/+ b; |) R0 u3 E& q' P; [! _. P5 ^

7 `0 k% a, @/ q: u7 i0 r7 r( fsend to P_B
9 O. M& a+ V# `  Uend, D$ T5 j6 S" J# L" P1 R

8 T/ f- o) C/ L  x! P  ?) N* R* m$ LP_B and P_C is similar
) \, \( r5 |8 _7 o6 \  mtriangular 30,60,90 min8 H1 P, A& ^0 N$ l( R2 @' X9 J
u 60,30 min
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+ z5 O( O* @+ e  Y$ V9 ~% A+ q; ~
- d% v1 \0 d: h0 I( D5 I! Q) min P_C, you need to send to die.
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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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# n; R* x* w$ L! SRemember 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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