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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,
4 o! F( C8 r# H/ x' D  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.
8 g& r1 f1 u- e- g: r  Loads are processed by each operator for the following time:! v/ \) N3 R4 h( }! S5 [6 @
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
/ P- e! m+ Q, d$ r# A' ^  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.
+ c  b# V3 t# I' e- x& v) }  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.( [: j9 T2 x) N8 l/ J7 H
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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3 ~) F- Q0 M1 D: D问题:
5 a, ^: V* C+ d  i. f1 VAfter running the model for 10,000 days, what was the average number of loads in each process?4 Z( X2 P5 Q- c4 \0 L, g. z: e# o$ z, A

7 k/ O; {) C2 H) m3 I不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
( L' B; D4 |  E, @, `0 e$ h1 wmove into Q_wait /*Capacity is infinte*/
* |3 e! k% h; N# o& m. y4 q& Z% Imove into Q_process /*Single capacity*/: s! u. j& t  F4 m
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use R_A for n 60,10 min /*Resource A*/
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send to P_B( d( Q$ f7 R* D2 E
end
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P_B and P_C is similar8 ~# j( g7 y6 R7 V/ \  h
triangular 30,60,90 min/ U2 P- t8 N& k7 r1 U: R
u 60,30 min
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; a% d! C3 p" `$ Sin P_C, you need to send to die.( `2 i8 o! M4 c9 `7 K/ A
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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.: S8 h/ c6 z& f8 A8 [) b

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, V+ h$ m6 R/ m' L3 k2 {2 }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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