ISSN: 1693-6
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Dynam
ic Mod
e
lling of A Flexible Li
nk Ma
ni
pulato
r
Ro
b
o
t Usin
g ……
(Moh. Khoiru
din)
DYNAM
IC MODELLING OF A FLEXIBLE LINK
MANIPULATOR ROBOT USI
N
G AM
M
Moh. Khairu
din
Electri
c
al Eng
.
Dept. Universitas
Neg
e
ri
Yogyaka
r
ta, Yogyaka
r
ta 5
5281, Indo
ne
sia
moh_
khai
rudi
n@u
n
y.ac.id
Abs
t
rak
Paper ini m
e
nyaji
k
a
n
pem
odela
n
da
ri sebua
h m
anip
u
lator lin
k fle
ksi
bel m
engg
una
kan
tekni
k
Lag
ra
ngian d
a
lam
hubu
ngan
nya
denga
n m
e
tode m
odu
s d
i
asum
si
kan
(AMM). Lin
k
-li
n
k
dim
odelka
n
seb
agai E
u
le
r-Be
r
no
ulli b
eam
s yang
m
e
m
enuhi kondi
si bata
s
m
a
ssa. Se
buah
beba
n
yan
g
terhub
ung
(p
aylo
ad) dita
m
bahkan
ke
ujun
g lu
ar l
i
nk,
sed
ang
kan h
ub i
nerti
as
dise
rtakan pa
da
a
k
tuato
r
sendi.
Pen
d
e
k
atan
L
agrang
ian di
gun
aka
n
untu
k
m
e
n
dapat
kan
m
odel
dinam
is da
ri
stru
ktur. M
o
d
e
l dinam
is d
a
ri
sebu
ah m
anipul
ator lin
k fleksib
e
l pa
da pe
nlitian i
n
i
dive
rifika
si m
engg
una
kan
sim
u
lasi M
a
tlab/Sim
u
link. Perum
u
sa
n
m
odel yan
g
diusulkan tel
ah
leng
kap
den
gan turut m
e
m
pertim
bankan
pen
garu
h
beb
an
ya
ng terh
ubu
n
g
(pa
y
lo
ad
)
dan
redam
an
yan
g
bera
da dal
am
keran
g
ka
kopling
(structural link). Penekana
n d
a
ri pe
rum
u
sa
n
m
odel ini telah di di
atur untu
k
m
enda
pat
kan persam
aan gera
k
a
n
yan
g
akurat ya
ng
m
enunjukka
n
aspe
k-aspe
k ya
ng pali
n
g berp
eng
ar
uh dalam
ko
pling, kh
ususnya u
n
tuk
ka
su
s
kopli
ng untu
k
tenaga ge
ra
k yang
ka
ku (ri
g
id) m
aupu
n yan
g
sel
a
lu b
e
rub
ah serta l
entur.
Kata kunci
:
assum
ed m
e
thod; dynam
ic m
odel; Lagra
ngian.
A
b
st
r
a
ct
This
pape
r p
r
ese
n
ts m
odel
ing of a fle
x
ib
le link m
anip
u
lator
usin
g L
agra
ngia
n
techniqu
e
in co
njun
ction
with the
a
s
su
m
ed m
ode method
(AMM).
The lin
ks a
r
e
m
odeled a
s
Euler-B
ern
oul
li
beam
s satisf
ying
pro
p
e
r
m
a
ss bo
und
a
r
y
con
d
ition
s
. A paylo
ad i
s
adde
d to the
tip of the ou
ter
link, whil
e hu
b inertia
s
are
includ
ed at the actu
at
or j
o
ints. The L
a
g
ran
g
ian a
p
p
r
oa
ch is
used
to
deri
v
e th
e d
y
nam
ic m
odel
of the structu
r
e. In this
re
search, the
dynam
ic m
odel
of a flexi
b
le li
nk
m
anipulator verified usi
ng Matlab/Sim
u
link sim
u
lation
.
The
m
odel form
ulation
p
r
opo
se
d
in
th
is
work is
com
p
lete in the se
nse that it co
nsid
ers the effects of payl
o
ad
and dam
p
i
ng stru
ctu
r
al of
the lin
k. The
em
phasi
s
h
a
s
b
een
set on
obtaini
ng a
c
curate e
quati
ons of m
o
tion
that di
spla
y t
h
e
m
o
st relevant
aspe
cts of th
e cou
p
li
ng b
e
t
ween ri
gid a
nd flexibl
e
dynam
ics.
Key
w
ords
: a
s
sum
ed m
e
thod; dyn
a
m
i
c m
odel; Lagra
ngian.
1. INTRO
DUCTIO
N
The first
step
of desig
n proce
dure is to
ac
kno
w
le
dge
the informati
on of co
nstru
c
ting the
dynamic mo
d
e
l of flexible
manipul
ators
usin
g
the
co
mbination
of
Euler-Lag
ran
ge a
nd A
s
su
med
mode m
e
tho
d
(AMM
). In orde
r to h
a
ve
a su
cce
ssful
modelin
g de
sign, p
r
io
r kn
owle
dge
of AMM
and Eule
r La
gran
ge eq
uat
ion are
nee
d
ed by integr
a
t
ing with Simulink. Simulat
i
on re
sult
s are
analyzed i
n
both the
tim
e
an
d freque
ncy d
o
main
s to a
s
sess the a
c
curacy
of the m
odel
in
rep
r
e
s
entin
g the actu
al syst
em.
Partial differential equ
ations (P
DE)
and
bo
unda
ry equation
s
of a flexible link
manipul
ator
system are obt
ained
by matchin
g
t
he
she
a
r force
and
bendi
ng mo
m
ent at the elb
o
w
joint, allo
wing
the ei
genval
ues to b
e
co
mputed
with
o
u
t re
co
urse t
o
dynami
c
formulation
s
[1].
On
the other
ha
nd, the vibra
t
ion mode
s
of a gene
ri
c flexible link
manipul
ator
are
studie
d
as a
function
of t
he lin
k, rotor and
tip ma
ss di
strib
u
tion.
Ne
ce
ssary
and
suffici
ent
co
ndition
s a
r
e
develop
ed for all vibration
mode
s to exh
i
bit a nod
e
at
the manip
u
lat
o
r. Vari
ous a
ppro
a
che
s
ha
ve
been devel
o
ped whi
c
h
can mainly be divided into two categ
o
rie
s
: the numeri
c
al anal
ysis
approa
ch
an
d the
AMM. The
nu
meri
cal
analy
s
is
metho
d
s th
at are utili
ze
d in
clud
e fin
i
te
differen
c
e (F
D) an
d finite element (FE
)
method
s. The
FD and FE a
ppro
a
che
s
ha
ve been u
s
ed
in
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