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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,
1 t% u& j1 a/ Y) {1 X, 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.' g* p) ]1 D2 w1 k2 ]
  Loads are processed by each operator for the following time:
& q! C3 P* o7 A- x5 \! N3 v  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
# d/ Z" _& }9 k$ p; o+ c2 Z  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.
" ]3 R" `; A) g6 c  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.: X! J1 l" m5 ^# K; |1 S/ I5 A, A" C+ V
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., C' `* K* Q( e' W9 k8 A2 Z/ ~. e/ G( `

) Y  T2 X- m4 D5 V) V9 Z6 M' s; N! K问题:1 u, C. ^2 k! g. S
After 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 arriving0 E* n( c$ C/ W* B, t3 A% c& c
move into Q_wait /*Capacity is infinte*/
& k. y+ w$ F3 {/ r2 Emove into Q_process /*Single capacity*/8 h6 J. _0 o& ~6 ?: @5 z) r

$ I3 U6 u: u3 l5 N  W/ L# zuse R_A for n 60,10 min /*Resource A*/
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$ o% {" D$ E1 [8 b$ a# U2 ~8 ksend to P_B( Z4 b( ^0 {. c  r8 ?% E
end
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P_B and P_C is similar
$ [; w; e' B: gtriangular 30,60,90 min( a2 h4 H4 R% e& A4 }
u 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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( ?+ w* P1 }. U1 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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