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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,
; X. p. O. g1 F" [  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.
# W* ^9 A% T4 T3 q0 h  Loads are processed by each operator for the following time:
% X1 M* _' k" |2 B  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
5 c2 g" F3 g2 r+ I) o5 j6 l- D* ]# _  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 z/ V- B0 a/ h  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.2 D7 u1 f  e9 Q4 q
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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$ Y* s* f/ Q: A* \% L) O问题:
( \2 p( [1 M4 I( n+ F8 x2 NAfter running the model for 10,000 days, what was the average number of loads in each process?
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0 r, N$ u! J/ J  c6 [不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving8 g( f6 p# W! y$ T) b
move into Q_wait /*Capacity is infinte*/& ~+ _8 [( H, e$ b* b, P
move into Q_process /*Single capacity*/: a2 h* g. ~# z4 E' Y3 U% e' i
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use R_A for n 60,10 min /*Resource A*/
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: `- b9 ?: d% M3 y3 v* k7 Dsend to P_B
7 U! I1 z/ P2 ?+ \4 V2 |end  R& Y& D* S' B) s6 S( \* _9 K  N
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P_B and P_C is similar
& H% X3 _3 Q' s: ]triangular 30,60,90 min; f* \/ P* J9 Q; X+ B5 K
u 60,30 min
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: y! |* r( g: C* Uin 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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" [1 x  i+ d! Y8 K) Q5 [! QRemember 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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