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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,; k' a; I  B0 }0 l
  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.
: r. n/ Z" O, J/ B/ S3 y  Loads are processed by each operator for the following time:
9 }, ?( k( i9 }% _3 v2 g$ S" G2 f  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.1 a! \6 k$ n3 q/ r3 D4 M
  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.
/ A- s+ I. I; ?# }0 P  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
% l0 E  p6 D, PSend 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:
; n3 l; T" x% f# @1 f; \After running the model for 10,000 days, what was the average number of loads in each process?1 N" L/ K! C/ L3 B! O: K  |: W

% M. X) D" x) I& y不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving! e4 e) z6 i0 e, B
move into Q_wait /*Capacity is infinte*/0 k+ I8 |1 K, I+ a  Y3 R
move into Q_process /*Single capacity*/' `6 i. D5 @! F- I' e" f" [
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use R_A for n 60,10 min /*Resource A*/2 M/ p# R; g: Q, T% P" q

2 E- ~( F! Y: C* w- asend to P_B
$ x& q( a8 P& M! K8 K3 i: {4 gend
# Z( J4 o; r& p# T8 ^
# r& {+ K7 \& S1 SP_B and P_C is similar
  ?# K3 C; w1 l6 Ftriangular 30,60,90 min" V8 c8 Y0 c1 J- O" h( ~2 U0 m& Q
u 60,30 min
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in P_C, you need to send to die.
1 ?, J1 c' E5 R. [& |; F. K# S( R) n9 ~# a% X' K; j( C8 V; t8 ~
Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.% p3 M3 M2 @2 l' V# n% v+ i

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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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