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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,7 Q, N( V7 U' m% D* G3 p
  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.: I% _- ]2 _8 f& V0 m, a
  Loads are processed by each operator for the following time:* \; k5 h# {8 M! k. y6 u- r5 i9 f
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.& q# s1 k4 \  A
  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.2 ^  z$ E% b/ H) B+ B
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.+ @% H) L* W) Y. o; ~7 M
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.  d+ a( {2 H+ ?) b/ y2 s* O

4 C8 @% l/ F) ?$ C  @问题:2 s; B5 K8 g$ ]
After running the model for 10,000 days, what was the average number of loads in each process?
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& ]) ^6 g2 B! U不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
) H9 |2 X/ [( C# A" Umove into Q_wait /*Capacity is infinte*/
: |/ Z4 N0 P0 j- ~# h% t$ v/ Qmove into Q_process /*Single capacity*/# _$ j, R' J# [

* `9 W# i. G7 P! V: Huse R_A for n 60,10 min /*Resource A*/
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4 ~+ K: H! G$ J5 R4 W4 psend to P_B
# ^' b9 [% a! x3 r: Fend
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P_B and P_C is similar( z8 p  l' w9 X- k8 m7 L
triangular 30,60,90 min2 V1 F5 x! c4 L& g
u 60,30 min/ N4 C4 r- W/ \3 w  ~

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in P_C, you need to send to die.# ~4 N( h' P; j" t: w% c; P6 k

7 K+ ^6 r/ w' n4 }! R, D# DThen 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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