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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,
& @8 U/ P3 n% 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.
6 M1 ^* o, }9 Y& }5 r# ]/ k$ q  Loads are processed by each operator for the following time:
7 x, [5 ?/ [+ j8 y  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
% C, }5 Z+ c' {8 K  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.$ g  [0 U+ C9 f0 N' T- m/ x, s' \/ J; p) i5 X
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
7 X# d: N/ R6 U+ L1 i* NSend 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.' R* L5 U/ |3 T: k; \
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问题:. Z) `3 T+ Y2 `; L, y
After running the model for 10,000 days, what was the average number of loads in each process?( b2 @7 }# N' f5 B4 t6 l
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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
! U0 G) m8 k  ~" omove into Q_wait /*Capacity is infinte*/2 h7 J9 W0 \! ~' I& t8 w. e
move into Q_process /*Single capacity*/! n: s: B( p+ P# R7 h
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use R_A for n 60,10 min /*Resource A*/
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  u7 h8 I' Z0 Tsend to P_B& I& x  F: k. a( ?
end- O' o$ Q: f3 g1 P7 X: \

2 [( k( S' D( l' BP_B and P_C is similar
% q  A* W2 _9 H- V3 Gtriangular 30,60,90 min
! G" K4 I* V0 C. mu 60,30 min5 T9 u: X3 x4 _8 r& i5 p' c- s

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in P_C, you need to send to die.% a/ R8 p# L1 F; B: i
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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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/ K/ z$ I+ w; M( i9 Y/ xRemember 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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