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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,) o# u4 ^( a( v  T
  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.# B& v. g2 C$ [6 B/ n& b
  Loads are processed by each operator for the following time:
$ o. D9 P; d: V4 N  Q+ ]) K  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
' j5 ?! a4 ~9 i2 h0 Y/ o0 b8 T! R  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.+ j! ]$ ?; \& p  N* B% `( R
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.4 m2 H# G7 `1 ?8 j2 Y: u; U
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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$ I8 Q( Z$ c" p问题:- `4 n/ q$ i' Y' H' e( V, H
After running the model for 10,000 days, what was the average number of loads in each process?9 X: X( D1 F$ x" B

) l! a; q( m% y; x  L8 A" C不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
$ Z3 p' N' a2 p* N3 Nmove into Q_wait /*Capacity is infinte*/
; e- K/ m5 b' A* T; tmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/( \( v/ o7 a% }0 U' {7 T9 Z
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send to P_B3 Q0 M. A2 e8 T' V
end8 e( R# o. M* \, w

# `( }9 m. e7 M: i# c9 n! P  JP_B and P_C is similar
0 E3 G7 N) ]2 V- ptriangular 30,60,90 min5 y! B9 F: F) t9 ~. O
u 60,30 min
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& T( _" M0 Q8 s  Cin P_C, you need to send to die.
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& Z# |$ S8 Q* h2 r6 x: p7 [' [Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.3 W8 R. T8 ~, T; v+ B8 R* v5 b
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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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