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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 U1 Q8 y) c: _  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.
- J3 [6 o. N% Z% _7 W  Loads are processed by each operator for the following time:
2 H) ~5 U2 x3 s3 I) {  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
+ S8 D3 M; V; B' z  J0 y  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.
" @: ^1 Z0 J" z* {  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ C, I4 b, ?  c0 M7 X( 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.
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* G. q4 }5 L% K* n  D0 k3 s& V问题:$ U: A- h  h9 M) j, G4 \: f+ n5 \
After running the model for 10,000 days, what was the average number of loads in each process?2 ~+ Y# |: `/ H) H+ t2 f% _

% N2 G5 y/ N7 v- T8 p2 C" {% e9 l不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving- ^% c- a9 N1 T
move into Q_wait /*Capacity is infinte*/
7 l4 l0 X8 v2 @& g- h% |: wmove into Q_process /*Single capacity*/; B3 U/ J: ~( I1 r' u8 ]
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use R_A for n 60,10 min /*Resource A*/
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$ A! u, ^5 t8 g; L+ Rsend to P_B
5 s8 M* t* j2 K7 N  ?3 uend
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P_B and P_C is similar
) u4 s' Q* t* M) G/ ytriangular 30,60,90 min$ P6 O% t- j% F
u 60,30 min2 {" m, i; G9 k+ M, ~

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. C' ?4 D. S# @in P_C, you need to send to die.* k5 @6 t; }6 ]6 _8 C: o- Z3 Q

1 b1 [# r, i  ^: R2 l6 IThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.& b' u5 [' }" ?/ K8 Y1 l

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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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