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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,4 U% V0 Z# ?/ N+ m, N% R' }8 r0 A. v
  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.
0 p2 ~+ i* d2 K( ?, o2 c- p' W& `& L  Loads are processed by each operator for the following time:
& k1 z# B$ d- b9 ^" @1 a3 J  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
, A, U' F, `  O- m6 K6 n. P# p; i  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.
; W4 R( A8 {8 K  n. f7 [  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.4 y( ~: ?, W' c
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.7 }3 K% L1 n9 O% I/ G1 R

5 f! s. Q7 L' q8 P, F8 J' w问题:
# ^- O# I3 L; C- K/ V: c/ u7 h2 ~After running the model for 10,000 days, what was the average number of loads in each process?2 X9 L$ \  T# l
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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 arriving4 y  z5 ~) ]( ]  S
move into Q_wait /*Capacity is infinte*/
% }0 F# [" I! T4 W: Y5 a) qmove into Q_process /*Single capacity*/3 \* ~. _% D! W( h2 u1 t+ }6 ]4 Y) s' u

3 o+ S' P* g$ v* u# I/ c) y) d0 nuse R_A for n 60,10 min /*Resource A*/
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1 K! e$ V! W; y( @send to P_B
/ }! {0 b( r1 {0 c( z( K$ rend
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7 ~2 M/ Y& B( g8 \P_B and P_C is similar: o8 Q: u( Y- }
triangular 30,60,90 min
4 B" W! T1 c7 [7 r8 z. J+ Bu 60,30 min
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in 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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* r2 w9 ?& ?  l* ^6 H* D  ~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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