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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; D- i+ l: u* g# 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.& S; V- i6 t. H& U  ~2 n2 H9 V
  Loads are processed by each operator for the following time:
1 N2 }4 j5 L0 f0 i  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
$ ?0 |  Z7 I6 Z9 t  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.: p8 N. ]% z/ K+ x
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.5 J6 G( Y# d4 H& z" 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.
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问题:  X- @$ j5 X, b0 Y7 g
After running the model for 10,000 days, what was the average number of loads in each process?0 G0 [# T* p$ ], l. S

& J) R8 t7 \+ T9 ?不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving  L6 k' o9 Z1 J. ]4 ^
move into Q_wait /*Capacity is infinte*/
9 ~% @% P* i0 X& ^( }move into Q_process /*Single capacity*/: e5 B5 Y; \; ]0 \$ k

/ n+ b# W5 H: M' J, |: suse R_A for n 60,10 min /*Resource A*/
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send to P_B
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% `) g! {5 E9 S. t. T+ H/ w- P' A4 |P_B and P_C is similar: z- a2 ~1 _- {$ U4 _
triangular 30,60,90 min  U# D) D' ]: F; ]! P
u 60,30 min% ^( }. m5 f8 p, z3 `5 r! \
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. a4 E9 \( l! T  Z# S* p, tin P_C, you need to send to die.
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0 j4 i! P0 m# k9 }, l2 ^$ K+ \Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.3 ]! U3 d  }0 M4 a: K5 ]! k

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5 ~: M  `  S% fRemember 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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