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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,( o9 b3 Z1 R; Q8 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.
9 W8 B, h2 u3 }4 P3 G  Loads are processed by each operator for the following time:
% B4 c1 t0 a$ ]- P0 c( ~7 `  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.$ G( a; i' I4 X7 {  N
  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." ?( Q. Z: n' a; h. A
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins." a% g8 l$ t- g& Y% @
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.$ ]1 g! z, u. g* N  c

. b7 W; p: c# k. ~5 M9 l问题:
0 ?3 ~2 p2 V7 h0 E0 u. oAfter running the model for 10,000 days, what was the average number of loads in each process?
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. _! {; N* y! {, L( m: c不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving. I. u* C- ^! C- Q: v
move into Q_wait /*Capacity is infinte*/
" r* S1 U1 z+ r% imove into Q_process /*Single capacity*/: p! V. a/ {, W# w7 E/ O

$ c! L1 s4 E: x0 @: L$ g, Nuse R_A for n 60,10 min /*Resource A*/
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send to P_B% f' r9 ^" s" L5 p# d
end- Q- [6 C& j) B5 M- ~; F$ q

2 j6 x! w: R3 y0 R+ w+ J3 s  jP_B and P_C is similar
# O4 }; b/ W' T3 O2 rtriangular 30,60,90 min
7 F4 _% _5 ]/ k/ i( Fu 60,30 min7 l. W  \! H: d) I' |
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/ x$ @' O' T2 r$ _9 P9 T9 }) Kin P_C, you need to send to die.# }" _0 c) ]: d" M+ N

8 Z- b& @8 i3 x7 J6 j; bThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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& w; i6 ], r* y( {$ Y* c" FRemember 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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