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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,1 W: F( Z# Q6 N) D0 y# ]
  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.% G& C4 b+ I5 _0 `9 D( u( T% c* @6 m
  Loads are processed by each operator for the following time:% D) r  p9 f9 _
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
- V4 ]* a  N7 K: E) u  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.: ^! b/ D* z# D$ ^
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
/ t2 a5 d: f- vSend 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:
, n: b4 B0 K8 eAfter 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
% M6 W4 R) k- J1 M. {5 imove into Q_wait /*Capacity is infinte*/
( f0 _9 ^0 @% R2 H% H, y, i; Y& ^, G% ]move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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' \" N4 {3 q# }0 N' d' i3 ~8 Bsend to P_B
: d4 K8 J7 G& b& Gend
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2 U/ x/ ~& e: @4 W, ^( W: RP_B and P_C is similar
3 U! q" }7 V) f: |. x/ c) Ntriangular 30,60,90 min' s) q' S* y. D. Z. M; f5 N
u 60,30 min
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& z- c' {  H7 K( g  \in P_C, you need to send to die.% l" x& q4 T- U, g
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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.9 s+ `: i1 X9 x1 r) P$ [+ f

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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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