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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,0 Q- C$ ^4 t4 ]
  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 [8 J1 Q7 Y: ]( C& f6 k- L9 M0 E* \
  Loads are processed by each operator for the following time:
. `: I8 ~. V, J+ {  p" e9 @  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
& p" j; r4 b) n$ n' j  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.
7 H) k0 }5 V7 Q0 N- l! K  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
& I4 f% j$ K$ v2 g( ZSend 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.
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# Q3 e! I) y! ~( S7 ^& S  `( B1 Q问题:; `) [: [9 q- m9 F
After running the model for 10,000 days, what was the average number of loads in each process?: _' h8 o9 o' G+ P

7 o1 J4 w! j" t* J, f& ^不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving  I5 h) j: \; l2 E+ x6 Y. H
move into Q_wait /*Capacity is infinte*/
# i/ j9 i& T6 j6 e( ]0 E; t0 H9 x6 Rmove into Q_process /*Single capacity*/. r9 p) u3 O' R" O2 ^6 E

# C2 W# K: j' iuse R_A for n 60,10 min /*Resource A*/" z8 ~, f8 G7 U2 F

) j, ^( ^. a& C) @send to P_B, V2 S1 b  l3 T4 Z& H
end
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P_B and P_C is similar. b4 I' b0 b4 h8 [6 @
triangular 30,60,90 min
1 y4 N) k$ u1 K/ `u 60,30 min
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) m+ h$ g3 J3 |: p  ]  l( u  t
: y$ m4 T3 m* c# Y  b4 R5 r4 zin P_C, you need to send to die.
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% J# n4 |0 V% K# S) mThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days./ x! Y- z" N4 i- |0 {
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; I* b/ M# A( ?" K8 D1 oRemember 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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