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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,. W, n. M0 j2 e# 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.
3 t& p, `$ d" C, x3 T! q% R8 B  Loads are processed by each operator for the following time:
0 ^! T; v& F* x  G( q- l  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.% Z; ]  W$ \7 t5 Z( n/ i
  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.% {. k; y2 `$ q4 d3 s* s
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ x( w3 w% p/ W/ @# A5 s+ z
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:
* E! p# h( M" O% V! `7 LAfter running the model for 10,000 days, what was the average number of loads in each process?. C# D7 y6 c4 l7 l2 c  W
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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
, S* r0 z9 N9 x6 m0 g# m+ bmove into Q_wait /*Capacity is infinte*/
$ H- q5 o0 Z7 m3 \8 @move into Q_process /*Single capacity*/6 d- m. T. \  k6 C  J' p$ o

% b) `; ~/ F; B4 b8 [use R_A for n 60,10 min /*Resource A*/; j. H/ j  s. H2 R

$ b6 V& _/ _. k5 I7 o+ l6 Wsend to P_B
9 m6 M3 ]$ G; r$ [) N4 `end. g5 Q) W" ~$ ~+ L2 d$ e/ o: F" e0 v9 K
  J3 u! m# q8 t$ a+ q' K& J
P_B and P_C is similar
+ x9 g/ J7 E" V4 M( btriangular 30,60,90 min  u3 B# m% Q$ c) g; ^! z
u 60,30 min/ O0 R3 `3 ?7 F" d( u$ a

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in P_C, you need to send to die.
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* A( K! o& Z8 k0 T  n( f6 JThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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* r2 {; E+ ]8 Q1 r& y0 ARemember 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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