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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,
( j  u  W; p) y3 J  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.
7 W" E4 r3 f* N/ p  Loads are processed by each operator for the following time:/ v% {2 ?4 I0 F, D$ k5 a6 H/ `
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.0 q% a( K7 `: P) Q; @: u, k
  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.6 r7 w0 k5 W: `* _5 \' T
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins." L5 O- l1 J% O& [+ 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.
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; \7 D& A: y2 J1 ^# N/ M问题:
6 y( J4 ~3 \# [4 H( F, lAfter 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$ Q9 @; C1 T4 @' S
move into Q_wait /*Capacity is infinte*/( ]0 `1 @7 q$ d1 h9 K* C6 W
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/+ y: _+ m1 u* c( \
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send to P_B
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6 i& z+ Q; g$ \+ ^$ w2 Q4 p; EP_B and P_C is similar
, n- B/ c. d- N1 o! @triangular 30,60,90 min% G: \8 ~4 ?& d3 j! z" w
u 60,30 min/ R; I: q' g4 S5 F2 P9 D  u7 B* ?

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in 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.! N6 @; ]* i% c$ l
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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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