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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,& v2 z3 B5 H: D' i1 T& H' A
  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.& Q$ y$ ?, J, U4 {; P. D6 q6 t
  Loads are processed by each operator for the following time:% V$ y: o% D/ r6 n5 j* E+ G/ G5 V
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
% D6 A$ Y2 e  W2 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.
8 Q0 G: v1 S7 K# t$ w9 w/ x  Worker_C does the job in a uniformly distributed time between 30 and 90 mins., I- }$ q" G8 o3 t$ N8 `) Z" H0 Q
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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5 o& b6 {2 p  R/ T问题:
* z* {. w' g6 h8 P" A. n, MAfter 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
6 c' n% s0 K9 }/ ~4 |3 gmove into Q_wait /*Capacity is infinte*/
- [# p! e$ F, `1 kmove into Q_process /*Single capacity*/
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( ~( m  F4 h, T7 r. |. q' _use R_A for n 60,10 min /*Resource A*/
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send to P_B
2 a3 @) h+ |8 q! C5 i1 `/ [end
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P_B and P_C is similar
) Y5 ^3 B$ }% ~; Vtriangular 30,60,90 min4 X8 C5 |' Y: i1 n9 Q
u 60,30 min+ H! U; K9 Z) Y; I5 v* v

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( U, e! ^$ ]% L! t( Bin 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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0 Y6 B) H1 u) X" ?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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