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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,2 N4 C5 K7 _/ y* d
  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.6 X: ]9 h/ X% G" p" I
  Loads are processed by each operator for the following time:9 @2 q+ w6 V5 U! e. T
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.- T( a, F% Z" D" z% 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.6 ^7 z4 o" `" l* y4 z- J: p
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
( h3 Q: }: h! K3 ~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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/ \% Z/ E$ y! {6 V( D) d问题:
/ l+ s: [5 b3 x8 f- YAfter running the model for 10,000 days, what was the average number of loads in each process?0 d( B( H! v7 L& `

, p7 m7 P3 N+ {, G不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
) t, G; }4 B1 ]: }# D- [8 v# b3 R3 i' Xmove into Q_wait /*Capacity is infinte*/
% ~) u! Z0 Z$ ]8 \, m7 n( nmove into Q_process /*Single capacity*/- Q! f* l9 t! d6 B8 |

+ Q7 z, t7 Y4 J% J1 U/ _% [1 J$ luse R_A for n 60,10 min /*Resource A*/
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! [  m: N  R. }. L+ a/ lsend to P_B$ Q/ x. {# i- X& s
end
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$ B! L9 E* W+ X6 }2 k$ hP_B and P_C is similar+ \, C( f5 o5 B9 v; a4 j2 ]
triangular 30,60,90 min
) q# t9 Q! k9 ^! p  Yu 60,30 min$ M% [% y0 `- X9 E

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9 I$ f9 k2 Q8 q7 U1 \in 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.# }) B- u* j( |2 U  B9 c) V1 w* O
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& C2 C4 D/ U/ _$ k7 q
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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