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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 `5 U" |6 J1 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.+ z' x' x1 `3 x8 k1 H: n
  Loads are processed by each operator for the following time:# k# a/ \/ {- X: X9 u0 ?  Y
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
  X& G# B8 l6 \2 q* C' l. x  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.
5 F! c  V$ v4 h  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
7 ~" V6 y$ J4 \" a$ `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:
% ?* X$ H- I! g, r) uAfter 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
9 L8 z/ ~# k/ r; Gmove into Q_wait /*Capacity is infinte*/8 {; M) i! n  \5 E2 M+ B+ K
move into Q_process /*Single capacity*/1 \# G! U/ t: X  x2 {

' K0 p8 k7 p7 @# Suse R_A for n 60,10 min /*Resource A*/
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, C6 ^# @2 M1 v3 \* L; {1 Zsend to P_B
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P_B and P_C is similar- y& F8 f2 x2 i: u  U0 \5 }
triangular 30,60,90 min
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, g' T4 s% i( a) p- h; L9 Rin 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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) Z4 q) q1 S3 z. K# X' pRemember 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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