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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,! H7 C& \& u3 g9 f
  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.
$ J) W$ a# p% Y$ N. }/ q# p# X  Loads are processed by each operator for the following time:7 R3 _8 D5 ^' a3 _$ K8 r5 s: F5 J
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.7 g- [9 e: R! j! [+ O
  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.
7 f0 Y3 L9 @# F/ e  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
0 W7 E3 v, Q& D1 I3 o  Y0 oSend 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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- Q! y2 d0 q% r1 \' G问题:
$ f& x3 U+ e1 T& W' gAfter running the model for 10,000 days, what was the average number of loads in each process?
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8 j' `. n: z# F9 a9 |2 g不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
9 a' A. l6 t8 S9 k! imove into Q_wait /*Capacity is infinte*/0 p" i- M9 ?5 _6 w) l7 I
move into Q_process /*Single capacity*// g: {) S2 @$ q* `) |

/ y5 F+ g2 j- Z8 ruse R_A for n 60,10 min /*Resource A*/
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) J$ ?$ }0 V: O. f# B1 z& |send to P_B
9 R- M- t% |* a5 n+ q3 Aend
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- X  ~4 X% D4 @$ {8 y" UP_B and P_C is similar
3 u  x* |# t9 a4 I$ atriangular 30,60,90 min
9 s+ W" m7 t: k. B4 p7 ~* zu 60,30 min
3 s4 B$ |2 C; S9 }- ?
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! e, q( j; v) {0 Qin P_C, you need to send to die.- d9 z; S2 h  F+ Q

2 c' c' E. A4 K  O, q/ |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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9 ~. K$ U6 _0 wRemember 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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