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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,3 t5 [2 h# h& Y. R) G
  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.
& _; G; N# H8 l% g; o  Loads are processed by each operator for the following time:
: ^" q: N( X3 m+ ~% S# m  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.2 R& x: v. ^# C+ Z! H% a+ s
  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.
( t  E) N" ^3 }7 t. e  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
; r7 L* u' e; I7 }% v$ K! R! s5 ^8 BSend 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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问题:. |! e' E4 @* s: E
After running the model for 10,000 days, what was the average number of loads in each process?# u0 j  I# W4 N
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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* T/ C6 Q7 ^$ k# A, P
move into Q_wait /*Capacity is infinte*/% e3 T) w; R3 W, s/ @* g3 `
move into Q_process /*Single capacity*/6 W: j& h* z. T  M% i6 L- q+ I, N

, ?  v7 P0 L  T$ x" z1 Ouse R_A for n 60,10 min /*Resource A*/2 H* I3 q: Q) Q$ p8 ~

5 q  T9 d$ Q) ^+ }$ F  lsend to P_B
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6 s$ z9 J5 \4 E% {! ^) T( i, K( @+ rP_B and P_C is similar
: v. M& s3 c- ^8 R# d$ B; k4 Mtriangular 30,60,90 min
+ k' c! Y# ~0 Z' qu 60,30 min
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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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