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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,
! c3 s, W2 j: D/ V4 M  _0 U  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.& g( f  V5 z6 T$ E& a
  Loads are processed by each operator for the following time:
% W; K& v) _7 R$ i2 k1 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% E# f+ z. ]  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.
/ j/ h0 A' I7 \: ]4 a# W8 _  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.  b5 b1 r% S- i: b/ h3 F" B
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./ t; w1 d4 H9 E3 `5 o+ c& K5 r
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问题:" t- F& X: i! k9 C' e" P7 A5 [; k
After running the model for 10,000 days, what was the average number of loads in each process?% |' Z! `) R, l" J

2 c- W; J7 v* }" z, O# ~不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
  w( a# ^0 n0 j% Cmove into Q_wait /*Capacity is infinte*/
5 W) U: G5 o: I+ x6 @move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/- V1 X; R3 W: \& u
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send to P_B
7 v# ]/ o8 A2 X& N4 C5 zend
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) d  W& u. z- v: R" U" CP_B and P_C is similar
9 I6 D' G; X4 `- utriangular 30,60,90 min
% a0 y! x2 g0 }# J  H% z! Qu 60,30 min
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in P_C, you need to send to die.
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' m3 l; L* |$ _/ m% u; g, MThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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