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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,
+ |- \% b  ~( V7 {! c/ n8 Y  ~  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.' |% p5 {1 i. g/ Y
  Loads are processed by each operator for the following time:
8 d! g' {+ P" l$ g  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.1 v( H# O8 Z; S: @" 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.
! O. F5 }3 z0 ?+ u$ t% J  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.: ]0 R( M# o. f0 z0 g( P; F
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.9 c( }0 D2 H7 w. R4 U  v! j' e' u8 ^) b' Q
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问题:2 f& M, ^) O9 u- k
After running the model for 10,000 days, what was the average number of loads in each process?; M+ [7 H( u6 a8 n" u' U* q

/ p# m5 Z: z* o不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving  e, ?0 v2 w8 p9 l9 {, _. J) d
move into Q_wait /*Capacity is infinte*/
& d# V% C" |$ F6 r" jmove into Q_process /*Single capacity*/2 H2 U  j% v2 V+ H; ~0 E! k
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use R_A for n 60,10 min /*Resource A*/
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6 X7 X3 ~+ M# ^# Psend to P_B( ?2 s" I1 I$ ~( X9 ]3 q/ |
end: H8 s' }9 o& o4 H2 Y/ U  `( Y

) d% o# U* v9 a. r  J/ \$ qP_B and P_C is similar
' Z8 x3 A, G7 X, e+ Utriangular 30,60,90 min
2 C/ C$ f6 ~9 ^) t% j6 J2 Fu 60,30 min% c5 z3 Q: v& F' B6 _" Q
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8 o9 D* |7 I# ]in P_C, you need to send to die.0 g2 v5 w- G5 b6 ~  j6 Z
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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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