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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,% Y# L" c% I0 s+ }
  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.
  p0 ^6 [/ ~! J/ k& C  Loads are processed by each operator for the following time:* C2 D' x; }& g& `! `; W' T
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
2 f) b: q% ^1 U8 [0 s2 \" R% ^; V  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.7 N) v* q& o7 @' @4 l. \, S) r
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
1 b2 t5 w& b$ i- }* _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.* c+ ^0 j0 l  n& u/ C( M
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问题:
' q: ^, f9 K5 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 arriving$ g) l; r! e4 W( s) b8 v
move into Q_wait /*Capacity is infinte*/$ P* l( C) @. h  [# w+ q2 Z; G
move into Q_process /*Single capacity*/
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3 F% k6 `6 r4 L) H4 I! Wuse R_A for n 60,10 min /*Resource A*/
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/ w  ], }: U  G+ S% ]; L* Ssend to P_B
7 Q( [, k! z9 O+ }7 S1 Vend  n0 D' x/ n9 x- k& M
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P_B and P_C is similar
, S$ g6 d/ U- Utriangular 30,60,90 min
" ~# c, {5 Z  q4 D; X5 O4 g* su 60,30 min
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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.3 B9 K4 M, j  r$ m+ T
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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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