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Auctores Publishing – Volume 3(4)-051 www.auctoresonline.org
ISSN: 2692-9406 Page 1 of 5
Precision Engine for Nanobiomedical Research
Afonin SM
National Research University of Electronic Technology, MIET, Moscow, Russia.
Corresponding Author: Afonin Sergey Mikhailovich, National Research University of Electronic Technology, MIET, 124498, Moscow,
Russia.
Received Date: February 08, 2021; Accepted Date: March 01, 2021; Published Date: March 12, 2021
Citation:Afonin SM. (2021) Precision engine for nanobiomedical research. Biomedical Research and Clinical Reviews. 3(4); DOI: 10.31579/2692-
9406/051
Copyright:© 2021 Afonin SM, This is an open-access article distributed under the terms of the Creative Commons Attribution License, which
permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract:
The transfer function and the transfer coefficient of a precision electromagnetoelastic engine for
nanobiomedical research are obtained. The structural diagram of an electromagnetoelastic engine has a
difference in the visibility of energy conversion from Cady and Mason electrical equivalent cir cuits of a
piezo vibrator. The structural diagram of an electromagnetoelastic engine is founded. The structural
diagram of the piezo engine for nanobiomedical research is written. The transfer functions of the piezo
engine or are obtained.
Keywords: precision engine; electromagnetoelastic engine; transfer function; structural model and
diagram; nanobiomedical research; piezo engine; deformation; transfer coefficient
Introduction
A precision electromagnetoelastic engines in the form of piezo engines or
magnetostriction engines are applied in nanomanipulators, nanopumps,
scanning microscopes for nanobiomedical research [1-6]. The piezo
engine is used for nanodisplacements in photolithography, medical
equipment of microsurgical operations, adaptive optics systems and fiber-
optic systems for transmitting and receiving information [4-12].
The electromagnetoelasticity equation and the differential equation are
solved to construct the structural diagram of an electromagnetoelastic
engine. The structural diagram of the engine has a difference in the
visibility of energy conversion for from Cady and Mason electrical
equivalent circuits of a piezo vibrator [4-8].
Transfer function
The structural diagram of a precision engine for nanobiomedical research
is changed from Cady and Mason electrical equivalent circuits [4-8]. For
a precision engine the equation of electromagnetoelasticity [2-14] has the
form of the equation of the reverse effect
jijmmiiTsdS
where
i
S
,
mi
d
,
m
,
ij
s
and
j
T
are the relative deformation, the
module, the control parameter or the intensity of field, the elastic
compliance, the mechanical intensity;
621 ,...,,i
;
321 ,,m
; and
621 ,...,,j
are the indexes.
The equation of the force on the face of a precision engine has the form
[10-19]
TSFtdt,xdM 0
22
Where
M
,
F
,
,
x
,
t
,
0
S
are the mass and force of load, the
displacemen, the coordinate, the time, the area of engine.
The differential equation of a precision engine has the form [4-32]
0
222 p,xdxp,xd
cp
Where
p,x
is the transform of Laplace for displacement;
p
,
,
c
,
are the operator of transform, the coefficient of wave
propagation, the speed of sound, the coefficien of attenuation. The
system of the equations for the forces on faces of a precision engine is
written [10-40]
p,TSpFppM j0
011
2
1
p,lTSpFppM j022
2
2
Where
p
1
,
p
1
are transforms displacement of faces 1 and 2 for
a precision engine.
The system of equations for the structural diagram and model of a
precision engine for the distributed parameters in nanobiomedical
research on Figure 1 has the form
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Auctores Publishing – Volume 3(4)-051 www.auctoresonline.org
ISSN: 2692-9406 Page 2 of 5
plp
lpd
pF
pMp mmi
ij
12
1
1
2
11
ch
sh
1
plp
lpd
pF
pMp mmi
ij
21
2
1
2
22
ch
sh
1
Where
0
Ssijij
,
153133
153133
d,d,d
d,d,d
dmi
,
13
13
H,H
E,E
m
,
HHH
EEE
ij s,s,s
s,s,s
s
551133
551133
,
H
E
,
E
is the intensity of electric field,
H
is
the intensity of magnetic field.
Figure 1: Structural diagram of precision engine for distributed parameters.
The matrix equation of a precision engine for nanobiomedical research
has the form
pF
pF
p
pWpWpW
pWpWpW
p
pm
2
1
232221
131211
2
1
The equation of the direct piezoelectric effect for the piezo engine in
nanobiomedical research [10-14] has the form
k
E
mkimimETdD
Where
m
D
,
E
mk
are the electric induction and the permittivity;
321 ,,k
is the index.
The equation for the coefficient of the direct piezoelectric effect
d
k
for
the piezo engine at
constE
has the form
E
ij
mi
n
n
ds
Sd
p
pI
k
0
,
21,n
Where
pI n
,
p
n
are transforms of current and velocity;
n
is
number of the face engine.
After conversion the structural diagram on Figure 1 the structural diagram
of the piezo engine for nanobiomedical research has form Figure 2. The
equation for negative feedback for structural diagram of piezo engine on
Figure 2 has the form
p
s
RSd
pU n
E
ij
mi
n
0
,
21,n
The equation for
r
k
the coefficient of the reverse piezoelectric effect for
the piezo engine in nanobiomedical research is obtained in the form
E
ij
mi
dr s
Sd
kk
0
J. Biomedical Research and Clinical Reviews Copy rights@ Afonin SM
Auctores Publishing – Volume 3(4)-051 www.auctoresonline.org
ISSN: 2692-9406 Page 3 of 5
Figure 2: Structural diagram of piezo engine for nanobiomedical research.
The structural diagram of the piezo engine with one fixed face for the lumped parameters is received on Figure 3.
Figure 3: Structural diagram of piezo engine for lumped parameters.
The transfer function of the piezo engine for the lumped parameters in
nanobiomedical research on Figure 3 at
0R
has the form
e
E
ijv
r
CCpkpM
k
pU
p
pW
2
2
2
Where
pU
is transformations of the voltage. Therefore, the transfer
function of the piezo engine has the follow form
12
22
2
pTpT
k
pU
p
pW
ttt
U
mi
E
ijemi
U
mi CCldk 1
,
e
E
ijtCCMT 2
Where
U
mi
k
,
t
T
,
t
are the transfer coefficient, the time constant, the
coefficient attenuation;
llsSC E
ij
E
ij
E
ij 1
0
is the stiffness of the
piezo engine at E= const. The transfer function of the transverse piezo
engine has the form
12
22 31
2
pTpT
k
pU
p
pW
ttt
U
E
e
UCChdk 113131 1
,
E
et CCMT 112
J. Biomedical Research and Clinical Reviews Copy rights@ Afonin SM
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ISSN: 2692-9406 Page 4 of 5
Where
h
,
are the height and the thickness;
hhsSC EEE 1111011 1
is the stiffness of the transverse piezo engine
at
constE
.
The transient process of the piezo engine at the transverse piezoelectric
effect at the step input voltage has the form
tt
t
t
t
Ut
T
t
e
Ukt sin
1
12
312
t
t
tT
2
1
,
t
t
t
2
1
arctg
For the piezo engine with the transverse piezoelectric effect made from
ceramic PZT at
31
d
= 2∙10-10 m/V,
h
=16,
2
M
= 2 kg,
E
C11
=
2.8∙107 N/m,
e
C
= 0.4∙107 N/m,
U
= 25 V, its parameters are obtained
t
T
= 0.25∙10-3 s and steady-state displacement
ht t
22
= 70 nm.
The characteristics of an electromagnetoelastic engine for
nanobiomedical research are obtained. The mechanical characteristic of
the engine is received as
ji TS
or
Fl
[10-15]
jijmmiiTsdS
constconst
The regulation characteristics of an electromagnetoelastic engine for
nanobiomedical research is obtained as
mi
S
or
Ul
[10-15]
const
const
T
jijmmi
T
iTsdS
The mechanical characteristic of a precision engine has the following
form
maxmax 1FFll
The maximum of the parameters
max
l
and
max
F
of the mechanical
characteristic of a precision engine have the form
ldl mmi max
ijmmijsSdSTF 00max max
Where index max is used for the maximum value of parameter of a
precision engine.
The maximum values of parameters of the piezo engine for the
transverse piezoelectric effect have the form
hEdh 331max
E
sSEdF 110331max
For the transverse piezo engine at
31
d
= 2∙10-10 m/V,
3
E
= 0.5∙105
V/m,
h
= 2.5∙10-2 m,
0
S
= 1.5∙10-5 m2,
E
s11
= 15∙10-12 m2/N its
parameters on are found
max
h
= 250 nm and
max
F
= 10 N. Theoretical
and practical parameters of the piezo engines are coincidences with an
error of 10%.
The regulation characteristic of an electromagnetoelastic engine for
nanobiomedical research at elastic load
lCF e
is obtained in the form
l
S
Cs
d
l
leij
mmi
0
The equation of the displacement of an electromagnetoelastic engine at
elastic load has the form
ije
mmi
CC
ld
l1
The equation of the displacement of the transverse piezo engine at elastic
load has the form
Uk
CC
Uhd
hU
E
e
31
11
31
1
For the transverse piezo actuator at
31
d
= 2∙10-10 m/V,
h
= 20,
E
C11
= 2∙107 N/m,
e
C
= 0.2∙107 N/m,
U
= 55 V, its parameters are found
U
k31
= 3.64 nm/V and steady-state displacement
ht t
22
= 200 nm.
For calculations the mechatronics control systems for nanobiomedical
research with a precision engine its characteristics are found.
Conclusions
The transfer function and the transfer coefficient of a precision
electromagnetoelastic engine are received. The structural diagram of a
precision engine for nanobiomedical research is obtained. The structural
diagram of an electromagnetoelastic engine for nanobiomedical research
is distinguished by the clarity of energy conversion from Cady and Mason
electrical equivalent circuits of a piezo vibrator.
The electromagnetoelasticity equation and the differential equation are
used to construct the structural diagram of an electromagnetoelastic
engine. The structural diagram of an electromagnetoelastic engine is
found from its electromagnetoelasticity and differential equations. The
structural diagram of the piezo engine is received using the reverse and
direct piezoelectric effects. The back electromotive force for the piezo
engine is founded from the direct piezoelectric effect. The characteristics
of a precision engine for nanobiomedical research are obtained.
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