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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,+ }- g9 f" ~3 C6 s+ v
  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.
& k) _! p% e3 a# T) }7 G0 |* Z  Loads are processed by each operator for the following time:; Y! u' g; e9 C+ [) ~5 c6 }
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
, r. h- g7 O2 [" O( D  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.
6 {* x; |% A! L6 K# C- ?  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.$ S5 S/ v+ F: @. K2 n* C$ 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.
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问题:
2 A. v, I2 O/ c# Q7 C; 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
! o' X8 P6 H" A1 Umove into Q_wait /*Capacity is infinte*/
- D+ `8 A5 y7 X  _7 [move into Q_process /*Single capacity*/
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+ B0 V' L/ k: o# Q9 {6 E8 t# quse R_A for n 60,10 min /*Resource A*/
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send to P_B
  f$ D% d+ a' u. Z6 Nend
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1 j1 i! J8 o% o+ J! ~P_B and P_C is similar( ^2 X* I# K7 M7 w: o, R. N# d
triangular 30,60,90 min
0 A. J+ W& Q* a% _3 D) mu 60,30 min
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in P_C, you need to send to die./ @2 u% O' u- M* ?' M

% A* w( [" |2 w7 |0 e( }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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