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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 m6 r' Q! |% _  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.
3 ?1 d: L) W' N  Loads are processed by each operator for the following time:
/ L0 r6 p: S" o+ M& ]0 j. q  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
& j% p3 U, v- N, V/ b2 J9 f  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.
* w2 {# I6 H# r; C3 b- U  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
$ @+ E$ y% y; D& GSend 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., X- R9 d" r8 J4 W
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问题:
$ n+ b8 c5 j) ^2 b' f/ g0 hAfter running the model for 10,000 days, what was the average number of loads in each process?8 k* i" ~3 U! a/ t% t6 [$ |8 |
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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 arriving& V% W7 `' K! N" O! [
move into Q_wait /*Capacity is infinte*/9 t0 J. q/ W% y& |
move into Q_process /*Single capacity*/
& n7 W, r7 M: ]/ e2 T! \+ E+ K% ~: J6 c0 w8 d; z/ v' ]  _
use R_A for n 60,10 min /*Resource A*/9 D7 m4 G& Q6 L! d- \

; _- \4 C  K% V5 P5 K5 vsend to P_B
, k6 ^1 v9 [4 G* B  r" p* K& t( tend
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P_B and P_C is similar
# t/ z8 I' H' z4 g7 N- }* Itriangular 30,60,90 min
, k$ z0 x% p5 H* }& h8 Xu 60,30 min4 ]: y: A& n- `3 q5 i

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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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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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