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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," Z! `4 d5 V3 {: M' _7 r* C2 _; z' O0 W8 k
  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.! w3 t6 j1 W! }: K7 o) X- Z( D
  Loads are processed by each operator for the following time:6 d" H* F2 A- M. A/ @2 r" l
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.3 j. L0 A$ W$ w" k) q
  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.. ~. e8 J& J1 s3 d" m
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.% c1 F) N6 o) i5 Q  g  U3 A1 M
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.7 b0 _( S& A; Y8 a, Y$ b% O
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问题:
7 I* E3 Y$ Z3 F7 PAfter 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 arriving8 p  X" B5 m) v0 @& }/ w
move into Q_wait /*Capacity is infinte*/
. |; u2 |0 G1 K4 Vmove into Q_process /*Single capacity*/
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) P6 |+ F# g/ X  l% u4 Juse R_A for n 60,10 min /*Resource A*/0 m2 L; l( d  |& p8 C3 }
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send to P_B
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P_B and P_C is similar
% L  S: D) u, S6 h# mtriangular 30,60,90 min% X1 i- o. p# O% A3 _8 x) i" r
u 60,30 min5 A2 _! E; s- i" k+ b. z; T& J

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: B- i" \2 F+ ^. i7 A" W1 Nin P_C, you need to send to die.
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: p; B: c2 b, u' m4 yThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.- j3 W7 J1 T3 R1 M
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7 y8 f4 _% B2 t: Y6 F- ~; E; f8 {* ZRemember 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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