基于LabVIEW平台的SMT贴片机路径优化的说研究.pdf

湖北工业大学 硕士学位论文 基于LabVIEW平台的SMT贴片机路径优化的研究 姓名:汪波 申请学位级别:硕士 专业:计算机应用技术 指导教师:王春枝 20080501

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湖北工业大学
硕士学位论文
基于LabVIEW平台的SMT贴片机路径优化的研究
姓名:汪波
申请学位级别:硕士
专业:计算机应用技术
指导教师:王春枝
20080501
湖北工业大学硕士学位论文
表面贴装技术在印刷电路板级电子产品制造中得到越来越广泛的应用。同时
电子制造业竞争日益激烈,产品投放市场时间越来越短,生产周期也日益缩短,
如何提高SMT系统生产效率,即SMT系统优化成为摆在我们面前的问题。
介绍了SMT系统组成,结构,工艺流程,发展现状及趋势。结合实际情况重
点研究了SMT系统优化的一个主要方面一贴片机路径优化。鉴于实际生产中贴片
机路径优化问题的复杂性、约束性、非线性、建模困难等特点,作出一些合理的
假设,在此基础上把贴片机路径优化问题转化为经典的优化组合问题_TSP问题。
TSP问题是一类有代表性的己被证明具有NPC计算复杂性的组合优化难题,
是目前国内外研究的热点和前沿问题。它的应用已涉及许多领域,如交通工程、
是关于生产调度、电路板布局、通讯工程等等,并且取得了很好的效果。但TSP
的理论分析和实践应用远未像其他算法那样成熟,还存在许多有待进一步研究的
问题。
介绍了一些常用求解TSP问题的算法。在比较它们优缺点的基础上将蚁群算
法优化思想扩展到贴片机路径优化问题。通过实验比较了几种改进的蚁群算法性
能,发现MMAS算法在求解TSP问题时性能最好。
结合实际生产情况,总结出贴片机路径优化的若干原则。针对单贴片头小型
贴片机,对这些优化原则进行取舍,在MMAS算法的基础上,使用LabVIEW
开发了贴片机路径优化系统。
通过仿真实验,发现路径优化系统在运算时间和求解精度上都有不错的性能。
说明MMAS算法是适合贴片机路径优化的。在单贴片头小型贴片机上使用本路径优
化系统可以提高生产率,降低成本。
贴片机路径优化的研究还处于起步阶段,对于一些复杂的情况还没有涉及。
对于多贴片头,多喂料器、单生产线多机平衡、多生产线多机化问题是下一阶段
重点研究的问题。
关键词:表面贴装技术,贴片机,TSP问题,蚁群算法,路径优化
湖北工业大学硕士学位论文
Abstract
ne
Surface
Mount
Tchnologv(SMn
is
more
and
more
used
in
Printed
Circuit
Board
electronic
product..At
the
same
time,the
main
fact
of electronic
manufacturing
is
the
shoner
produce
period,the
shoner
time 0f
prOduct
which
put
in
market.How
tO
improve
SMT
produce
efficiency
and
how
to
optimize
SMT
sVstem?It
is
new
problem
in
the
face
0f
people.
It
introduce
the
composing,configuration
and
technical
now
of
SMT
sVstem.and
also
introduces
it’s
phVlogenV
and
it’s
future.It
rcsearch
the
mostly
side
of
SMT
system
Optimization—_surface
mount
machine
route
optimizatiOn
aCtuallv.Because
surface
mount
machine
rOute
optimization
is
complex,restrict,non.1inear
and
difficult
t0
make
model,∞nis
anicle
give
some
lo百Cal
suppose.nen
it
transfo册the
problem
of
surface
mount
machine
route
optimization
to
the
classical
combinatorial
ma{orization
problem—-travelling
salesman
Problem(TSn.
The
traveUing
salesman
Problem
is
alwaVs
one
of
the
most
interesting
and
the
hardest
topic
in
combinatofial
majorization.There
is
currently
lot
of
ongoing
aCt.vity
in
the
scientific
cOmmunitV
tO
resear(m
TSP.It
has
been
used
sueeessfhUV
in
manV
fields,
such
as
communication
proiect,
produce
attemperation
and
PCB
lavout.The
theOrv
alld
aDplication
0f
TSP
are
not
mature,
s0
we
must
studV
it
more.
It
introduCe
some
al舯rithms
which
usuallV
used
to
solve
TSP.After
compared
their
stronl孵oints
and
shonpoints
it
used
the
idea
of
Ant
Colony
al擘roritlllIls
on
sudke
mOunt
machine
route
Optimization
problem.When
it
compare
some
improved
Ant
Colony
al舯rithms,it
find
that
the
MMAS
algorithm
is
best
than
others
in
solve
TSP
problem.
ActuaUv.
it
find
out
some
nlles
of
surface
mount
machine
route
optimization.Because
the
research
is
based
on
sin2le
cIlpule
smaU
suff犯e
mount
machine,so
This
anicle
gives
up
some
11lles.It
uses
hbVIEW
to
empolder
surface
mount
machine
route
optimizatiOn
sVstem
based
On
AS
algorithm.
Througll
some
emulational
experiments,it
found
this
optimization
svstem
has
霉rood
capabilitv.It
pmved
that
MMAS
arithmetic
is
adapt
to
surface
mount
machine
route
0ptjmizatjon
problem.S瑚a11
su而ce
mount
machine
install
this
Optimization
system
win
improve
pmduce
efficiency
and
reduce
produce
Cost.
is
begining
of
research
of
surface
mount
machine
route
optimization,and
This
anicle
does
not
research
the
complex
thin霉§.Moreover,the
balance
optimization
question
of
multi.productiOn
lineS
which
have
many
machines
is
the
next
key
question.
Keywords:Sumce
Mount
Technology,
Surface
MOunt
Machine,Travelling
Salesm锄
Problem,Ant
ColOny舢gorithm,Route
0ptimization
ll