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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,
6 Z  r% z2 _% Y9 j8 x( U) T- @  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." o# v- f& U- F8 H
  Loads are processed by each operator for the following time:
$ j5 `6 S) M. [2 z1 l  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
' r4 J; l. S2 m5 f3 j1 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.
7 q0 a* p$ v. b- C6 G# q  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.+ g6 _( @/ e4 @/ v1 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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问题:
# h: X5 d. j+ b$ XAfter running the model for 10,000 days, what was the average number of loads in each process?
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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
% V6 U% q3 W1 p0 S' f: v# F: ymove into Q_wait /*Capacity is infinte*/4 X; `2 G" b! K
move into Q_process /*Single capacity*/6 e/ |. p- F9 j6 h
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use R_A for n 60,10 min /*Resource A*/
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- B. x/ w2 J4 u9 tsend to P_B1 M& x$ |; B" S! ^
end
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P_B and P_C is similar
3 W4 C+ ~* m0 V7 [6 j+ @/ y. c+ Itriangular 30,60,90 min+ ?1 B0 A3 i; w% ?! W* l
u 60,30 min8 H4 \  ^9 B, N

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in P_C, you need to send to die.% C9 c5 d% Y. E3 [1 Y6 f

' V( ?+ H  p  t3 WThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days., q. B) B. X  s, F9 f: x9 A9 v; b
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9 U1 T, o; G1 BRemember 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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