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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,$ x; R  F. A% w3 U8 j
  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.0 N9 Z" W+ I( U( c* c7 [  C8 O0 J
  Loads are processed by each operator for the following time:" w& |* I& \7 f5 N+ y
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
; k/ f% R1 q5 ]0 E7 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.6 H) `* M4 o: I5 q" Y
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins., V/ y# V- v& s' D* v% `; M; F( O
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.. h: O. D# l- o, \: L
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问题:
- O! t2 d- `0 S/ X3 `After running the model for 10,000 days, what was the average number of loads in each process?; P0 b4 z. {$ \  d

3 \' T+ @( L7 y不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
& j: v/ C& r7 F$ f8 S# Fmove into Q_wait /*Capacity is infinte*/: D+ X: @2 b# A- n! Y
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/, F0 U( g/ k8 }1 R( P# m
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send to P_B
! S0 W2 X. f) }0 Eend
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P_B and P_C is similar
' _* H) ]) S  C2 U% M! F4 b8 Qtriangular 30,60,90 min
! [6 k' `+ U6 x. X* P6 q0 [- A% Yu 60,30 min6 [; m1 u! B- E

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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., l% a3 V- m) N

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4 I4 S9 T0 y, y- x3 ?* i, ]! [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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