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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,& p0 L# y7 i5 l7 \6 Q/ B
  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.
  C' l5 V2 Z( \; P* }8 a& p  Loads are processed by each operator for the following time:1 o* F, i: F3 I/ Y- a+ t6 b7 e
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
8 c7 q2 k2 r. D8 {7 L1 y( S; 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.
( }1 L# u8 h: v, q# @$ k  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
* n. {" ?) m6 V$ DSend 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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4 y$ o# K1 M9 I3 Z问题:
' A3 y, j8 H- U3 `) Z& YAfter 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
4 M* U# u9 K" ?& ]move into Q_wait /*Capacity is infinte*/
6 F: Q: Z! w. S+ Nmove into Q_process /*Single capacity*/  q. V6 t' O- {1 w4 B0 X9 C

3 ^; D6 b" D' Z9 juse R_A for n 60,10 min /*Resource A*/3 g& D! S" [8 e8 J
3 h7 }6 s0 g/ _6 f" m4 I
send to P_B
! b0 x6 w2 ~. |& r9 qend; ]; H% w1 p5 j2 W+ E4 `

( Y8 g6 C$ `& }" Z0 |- `& C- w) E( PP_B and P_C is similar
. I$ B9 l! d$ `  M8 gtriangular 30,60,90 min
! S& c4 w5 t: F' `0 f2 K+ ]8 vu 60,30 min' B" D  D" G2 R+ D  t5 S
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( e% m5 [4 P4 ]  nin P_C, you need to send to die.
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, _, M4 q4 f/ \8 q# n( M, m  }! }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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6 V1 q! Z1 F% N& _$ x4 RRemember 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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