1. An elastomer composite used as the material for the plug of a medical vessel comprising;
100 parts by mass of a block copolymer mixture containing 50 to 95 parts by mass of a block copolymer A, and 5 to 50 parts by mass of a block copolymer P, with the total of said block copolymer A and said block copolymer P being 100 part by mass, 100 to 300 parts by mass of a softening agent having a kinematic viscosity in the range of between 50 and 500 cSt, at 40\xb0 C.,
1 to 50 parts by mass of a propylene polymer C having a modulus in bending in the range of between 1000 and 3000 MPa,
wherein said block copolymer A is a hydrogenated polymer of a block copolymer Z1 having a polymer block Y1, and two polymer blocks X1 each combining to both ends of said polymer block Y1, said polymer block Y1 containing a butadiene monomer unit as its main constitutional unit, and a ratio of 1,2-bonding in said butadiene monomer unit being in the range of between 10 and 50%, with each polymer block X1 containing a styrene monomer unit as its main constitutional unit, the weight-average molecular weight of said block copolymer A being in the range of between 160,000 and 400,000, said block copolymer A being a block copolymer containing 20 to 50% by mass of a styrene monomer unit, and said block copolymer P is a hydrogenated polymer of a bock copolymer Z2 having a butadiene-styrene controlled distribution copolymer block Y2, and two polystyrene blocks X2 each combining to both ends of said copolymer block Y2, with the weight average molecular weight of said block copolymer P being in the range of between 160,000 and 400,000, said block copolymer P being a block copolymer containing 40 to 70% by mass of a styrene monomer unit, and further, said butadiene-styrene controlled distribution copolymer block Y2 comprising more than two domains YB2 containing a butadiene monomer unit as its main constitutional unit, and at least one domain YS2 containing a styrene monomer unit as its main constitutional unit, with both ends of said copolymer block Y2 being said domains YB2.
2. An elastomer composite used as the material for the plug of the medical vessel in accordance with claim 1, wherein said propylene polymer C is a polypropylene.
3. An elastomer composite used as the material for the plug of the medical vessel in accordance with claim 1, wherein the A-hardness of said elastomer composite is in the range of between 30 and 50, said A-hardness being measured according to JIS K6253, the measuring time being set at one second.
4. An elastomer composite used as the material for the plug of the medical vessel in accordance with claim 2, wherein the A-hardness of said elastomer composite is in the range of between 30 and 50, said A-hardness being measured according to JIS K6253, the measuring time being set at one second.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of determining an equivalent circuit model of a passive element, said method comprising the steps of:
(a) providing the equivalent circuit model using an RCL circuit comprising an RC circuit and an RL circuit connected in series to the RC circuit, the RC circuit comprising a resistor and a capacitor, the RL circuit comprising a resistor and an inductor;
(b) inputting a measured impedance of the passive element over a frequency range (f1, . . . , fN), the measured impedance including a measured real impedance R, a measured imaginary impedance X, and a measured complex impedance Z, the measured real impedance having a minimum value R0 at a frequency fm, (where fm\u2260f1 and fm\u2260fN);
(c) calculating an estimated impedance over the frequency range, the estimated impedance including an estimated real impedance RM, an estimated imaginary impedance XM and an estimated complex impedance ZM using values for circuit elements of the equivalent circuit model provided in step (a);
(d) determining first and second evaluation functions over respective first and second sub-frequency ranges within the frequency range, the first frequency sub-range including frequencies f1\u2266fn\u2266fm, the second frequency sub-range including frequencies fm+1\u2266fn\u2266fN, each of the first and the second evaluation functions determining an error between the estimated impedance and the measured impedance by calculating a difference between each of 1) the estimated real impedance RM and the measured real impedance R subtracted by the minimum value R0, 2) the estimated imaginary impedance XM and the measured imaginary impedance X and 3) the estimated complex impedance ZM and the measured complex impedance Z,
the first evaluation function comprising:
A
\u2061
(
P
_
)
=
\u2211
n
=
1
m
\u2062
a
\u2061
(
R
M
\u2061
(
f
n
,
P
_
)
,
X
M
\u2061
(
f
n
,
P
_
)
,
R
\u2061
(
f
n
)
–
xR
0
,
X
\u2061
(
f
n
)
)
,
where
a
\u2061
(
R
M
,
X
M
,
R
,
X
)
=
c
R
\u2062
|
R
M
–
(
R
–
R
0
2
)
\u2062
|
2
|
R
\u2062
|
d
+
c
X
\u2062
|
X
M
–
X
\u2062
|
2
|
X
\u2062
|
d
+
c
Z
\u2062
|
Z
M
–
Z
\u2062
|
2
|
Z
\u2062
|
d
,
the second evaluation function comprising:
B
\u2061
(
P
_
)
=
\u2211
n
=
m
+
1
N
\u2062
b
\u2061
(
R
M
\u2061
(
f
n
,
P
_
)
,
X
M
\u2061
(
f
n
,
P
_
)
,
R
\u2061
(
f
n
)
–
(
1
–
x
)
\u2062
R
0
,
X
\u2061
(
f
n
)
)
,
where
b
\u2061
(
R
M
,
X
M
,
R
,
X
)
=
c
R
\u2062
|
R
M
–
(
R
–
(
1
–
x
)
\u2062
R
0
)
\u2062
|
2
|
R
\u2062
|
d
+
c
x
\u2062
|
X
M
–
X
\u2062
|
2
|
X
\u2062
|
d
+
c
z
\u2062
|
Z
M
–
Z
\u2062
|
2
|
Z
\u2062
|
d
,
and, for each of the first and the second evaluation functions, where 0\u2266x\u22661, {right arrow over (P)}=(P1,P2, . . . PK) is a circuit constant vector storing the values of the circuit elements and d, CR, CX, and CZ are positive real numbers or zero;
(e) applying the estimated impedance calculated in step (c) and the measured impedance inputted in step (b) to the first and the second evaluation functions determined in step (d);
(f) adjusting values of the estimated impedance to minimize the error between the estimated impedance and the measured impedance using the first evaluation function, thereby generating a part of element values of the equivalent circuit model of the passive element;
(g) adjusting the values of the estimated impedance to minimize the error between the estimated impedance and the measured impedance using the second evaluation function, thereby generating a further part of the element values of the equivalent circuit model of the passive element; and
(h) storing the part of the element values and the further part of the element values.
2. The computer implemented method according to claim 1,
wherein the equivalent circuit model includes an NC-stage RC ladder circuit and an NL-stage RL ladder circuit connected in series with each other.
3. The method according to claim 2,
wherein said step (f) of adjusting the values of the estimated impedance comprises the sub-steps of:
(f-1) distributing a resistance RC(k) and a capacitance C(k) in a k-th stage of the NC-stage RC ladder circuit at an equal ratio with coefficients \u03b1C and \u03b2C in accordance with formulae
Rc(k+1)=\u03b1c\xb7Rc(k), and C(k+1)=\u03b2c\xb7C(k),
under conditions of
R
\u2062
\u2062
c
\u2061
(
1
)
=
(
1
–
x
)
\u2062
R
0
,
and
\u2062
\u2062
\u2211
k
=
1
Nc
\u2062
C
\u2061
(
k
)
=
–
1
2
\u2062
\u03c0
\u2062
\u2062
f
1
\u2062
X
\u2061
(
f
1
)
;
(f-2) obtaining the coefficients \u03b1C and \u03b2C by minimizing the first evaluation function A({right arrow over (P)}) using values given in said step (f-1) as initial values; and
(f-3) obtaining the resistance RC(k) and the capacitance C(k) by minimizing the first evaluation function A({right arrow over (P)}) using values derived from the coefficients \u03b1C and \u03b2C obtained in said step (f-2) as initial values, and
wherein said step (g) of adjusting the values of the estimated impedance comprises the sub-steps of:
(g-1) distributing a resistance RL(k) and an inductance L(k) in a k-th stage of the NL-stage RL ladder circuit at an equal ratio with coefficients \u03b1L and \u03b2L in accordance with formulae
RL(k+1)=\u03b1L\xb7RL(K), and L(k+1)=\u03b2L\xb7L(k),
under conditions of
R
L
\u2061
(
1
)
=
x
\xb7
R
0
,
and
\u2062
\u2062
L
\u2061
(
1
)
=
X
\u2061
(
f
N
)
2
\u2062
\u03c0
\u2062
\u2062
f
N
;
(g-2) obtaining the coefficients \u03b1L and \u03b2L by minimizing the second evaluation function B({right arrow over (P)}) using values given in said step (g-1) as initial values; and
(g-3) obtaining the resistance RL(k) and the inductance L(k) by minimizing the second evaluation function B({right arrow over (P)}) using, as initial values, values derived from the coefficients \u03b1L and \u03b2L obtained in said step (g-2).
4. The method according to claim 3 further comprising the steps of:
(i) calculating a further estimated impedance over the frequency range by forming an RCL ladder circuit, the RCL ladder circuit formed by connecting, in series, the RC ladder circuit obtained in steps (f-1) through (f-3) and the RL ladder circuit obtained in said steps (g-1) through (g-3) using values for the circuit elements of the RCL ladder circuit; and
(j) determining a third evaluation function Q({right arrow over (P)}) over the frequency range, the third evaluation function determining a further error between the further estimated impedance and the measured impedance,
the third evaluation function comprising:
Q
\u2061
(
P
\u2192
)
=
\u2211
n
=
1
N
\u2062
q
\u2061
(
R
M
\u2061
(
f
n
,
P
\u2192
)
,
X
M
\u2061
(
f
n
,
P
\u2192
)
,
R
\u2061
(
f
n
)
,
X
\u2061
(
f
n
)
)
\u2062
\u2062
where
q
\u2061
(
R
M
,
X
M
,
R
,
X
)
=
C
R
\u2062
|
R
M
–
R
\u2062
|
2
|
R
\u2062
|
d
+
C
X
\u2062
|
X
M
–
X
\u2062
|
2
|
X
\u2062
|
d
+
C
Z
\u2062
|
Z
M
–
Z
\u2062
|
2
|
Z
\u2062
|
d
;
and
(k) determining the resistance RC(k), the capacitance C(k), the resistance RL(k), and the inductance L(k) by adjusting the values of the further estimated impedance to minimize the further error between the further estimated impedance and the measured impedance using the third evaluation function Q({right arrow over (P)}), using the resistance RC(k) and the capacitance C(k) obtained in said step (f-3) and the resistance RL(k) and the inductance L(k) obtained in said step (g-3) as initial values.
5. A method of determining an equivalent circuit model of a passive element, comprising the steps of:
(a) inputting a measured impedance of the passive element over a frequency range (f1, . . . , fN), the measured impedance including a measured real impedance R, a measured imaginary impedance X, and a measured complex impedance Z, the measured real impedance having a minimum value R0 at a frequency fm, (where (fm=fN);
(b) providing a first RC circuit including a resistance and a capacitance as the equivalent circuit model;
(c) calculating an estimated impedance over the frequency range, the estimated impedance including an estimated real impedance RM, an estimated imaginary impedance XM, and an estimated complex impedance ZM using values for circuit elements of the equivalent circuit model provided in step (b);
(d) determining an evaluation function over the frequency range, the evaluation function determining an error between the estimated impedance and the measured impedance by calculating a difference between each of 1) the estimated real impedance RM and the measured real impedance R subtracted by the minimum value R0, 2) the estimated imaginary impedance XM and the measured imaginary impedance X and 3) the estimated complex impedance ZM and the measured complex impedance Z,
the evaluation function comprising:
A
\u2061
(
P
\u2192
)
=
\u2211
n
=
1
N
\u2062
a
\u2061
(
R
M
\u2061
(
f
n
,
P
\u2192
)
,
X
M
\u2061
(
f
n
,
P
\u2192
)
,
R
\u2061
(
f
n
)
–
x
\u2062
\u2062
R
0
,
X
\u2061
(
f
n
)
)
,
where
a
\u2061
(
R
M
,
X
M
,
R
,
X
)
=
C
R
\u2062
|
R
M
–
(
R
–
x
\u2062
\u2062
R
0
)
\u2062
|
2
|
R
\u2062
|
d
+
C
X
\u2062
|
X
M
–
X
\u2062
|
2
|
X
\u2062
|
d
+
C
Z
\u2062
|
Z
M
–
Z
\u2062
|
2
|
Z
\u2062
|
d
,
where 0\u2266x\u22661, P=(P1,P2, . . . PK) is a circuit constant vector storing the values of the circuit elements and d, CR, CX, and CZ are positive real numbers or zero;
(e) applying the estimated impedance calculated in step (c) and the measured impedance inputted in step (a) to the evaluation function determined in step (d);
(f) adjusting values of the estimated impedance to minimize the error between the estimated impedance and the measured impedance using the evaluation function, thereby generating element values of the equivalent circuit model of the passive element;
(g) providing a second RC circuit including the first RC circuit having the element values generated in step (f) and a resistance xR0 connected in series with the first RC circuit; and
(h) storing the element values.
6. The computer implemented method according to claim 5, wherein the first RC circuit includes an NC-stage RC ladder circuit (\u201cNC\u201d is a natural number) having a resistance arranged in a serial arm and a capacitance arranged in a parallel arm.
7. The method according to claim 6, wherein said step (f) of adjusting the values of the estimated impedance comprises the sub-steps of:
(f-1) distributing a resistance RC(k) and a capacitance C(k) in a k-th stage of the NC-stage RC ladder circuit at an equal ratio with coefficients \u03b1C and \u03b2C in accordance with formulae
Rc(k+1)+\u03b1C\xb7RC(k), and C(k+1)=\u03b2C\xb7C(k),
under conditions of
Rc
\u2061
(
1
)
=
(
1
–
x
)
\u2062
R
0
,
\u2062
and
\u2062
\u2062
\u2211
k
=
1
N
c
\u2062
C
\u2061
(
k
)
=
–
1
2
\u2062
\u2062
\u03c0
\u2062
\u2062
f
1
\u2062
X
\u2061
(
f
1
)
;
(f-2) obtaining the coefficients \u03b1C and \u03b2C by minimizing the evaluation function A({right arrow over (P)}) using the values given in said step (f-1) as initial values; and
(f-3) obtaining the resistance RC(k) and the capacitance C(k) by minimizing the evaluation function A({right arrow over (P)}) using values derived from the coefficients \u03b1C and \u03b2C obtained in said step (f-2) as initial values.
8. A method of determining an equivalent circuit model of a passive element, comprising the steps of:
(a) inputting a measured impedance of the passive element over a frequency range (f1, . . . , fN), the measured impedance including a measured real impedance R, a measured imaginary impedance X, and a measured complex impedance Z, the measured real impedance having a minimum value R0 at a frequency fm, (where fm=fN);
(b) providing a first RL circuit including a resistance and an inductance as the equivalent circuit model;
(c) calculating an estimated impedance over the frequency range, the estimated impedance including an estimated real impedance RM, an estimated imaginary impedance XM, and an estimated complex impedance ZM using values for circuit elements of the equivalent circuit model provided in step (b);
(d) determining an evaluation function over the frequency range, the evaluation function determining an error between the estimated impedance and the measured impedance by calculating a difference between each of 1) the estimated real impedance RM and the measured real impedance R subtracted by the minimum value R0, 2) the estimated imaginary impedance XM and the measured imaginary impedance X and 3) the estimated complex impedance ZM and the measured complex impedance Z,
the evaluation function comprising:
B
\u2061
(
P
\u2192
)
=
\u2211
n
=
1
N
\u2062
b
\u2061
(
R
M
\u2061
(
f
n
,
P
\u2192
)
,
X
M
\u2061
(
f
n
,
P
\u2192
)
,
R
\u2061
(
f
n
)
–
(
1
–
x
)
\u2062
R
0
,
X
\u2061
(
f
n
)
)
,
where
b
\u2061
(
R
M
,
X
M
,
R
,
X
)
=
C
R
\u2062
|
R
M
–
(
R
–
(
1
–
x
)
\u2062
R
0
)
\u2062
|
2
|
R
\u2062
|
d
+
C
X
\u2062
|
X
M
–
X
\u2062
|
2
|
X
\u2062
|
d
+
C
z
\u2062
|
Z
M
–
Z
\u2062
|
2
|
Z
\u2062
|
d
,
where 0\u2266x\u22661, {right arrow over (P)}=(P1,P2, . . . PK) is a circuit constant vector storing the values of the circuit elements, and d, CR, CX, and CZ are positive real numbers or zero;
(e) applying the estimated impedance calculated in step (c) and the measured impedance inputted in step (a) to the evaluation function determined in step (d);
(f) adjusting values of the estimated impedance to minimize the error between the estimated impedance and the measured impedance using the evaluation function, thereby generating element values of the equivalent circuit model of the passive element;
(g) providing a second RL circuit by connecting the first RL circuit having the element values generated in step (f) in series with a resistance (1\u2212x)R0; and
(h) storing the element values.
9. The computer implemented method according to claim 8, wherein the first RL circuit includes an NL-stage RL ladder circuit (\u201cNL\u201d is a natural number) having a resistance arranged in a serial arm and an inductance arranged in a parallel arm.
10. The method according to claim 9, wherein said step (f) of adjusting the values of the estimated impedance comprises the sub-steps of:
(f-1) distributing a resistance RL(k) and an inductance L(k) in a k-th stage of the NL-stage RL ladder circuit at an equal ratio with coefficients \u03b1L and \u03b2L in accordance with formulae
RL(k+1)=\u03b1L\xb7RL(K), and L(k+1)=\u03b2L\xb7L(k),
under conditions of
R
L
\u2061
(
1
)
=
x
\xb7
R
0
,
\u2062
and
\u2062
\u2062
L
\u2061
(
1
)
=
X
\u2061
(
f
N
)
2
\u2062
\u2062
\u03c0f
N
;
(f-2) obtaining the coefficients \u03b1L and \u03b2L by minimizing the evaluation function B({right arrow over (P)}) using values given in said step (f-1) as initial values; and
(f-3) obtaining the resistance RL(k) and the inductance L(k) by minimizing the evaluation function B({right arrow over (P)}) using values derived from the coefficients \u03b1L and \u03b2L obtained in said step (f-2) as initial values.
11. A recording medium readable by a computer, said recording medium storing a program For allowing the computer to execute a method of determining an equivalent circuit model of a passive element, wherein said method comprises the steps of:
(a) providing the equivalent circuit model using an RCL circuit comprising an RC circuit and an RL circuit connected in series to the RC circuit, the RC circuit comprising a resistor and a capacitor, the RL circuit comprising a resistor and an inductor;
(b) inputting a measured impedance of the passive element over a frequency range (f1, . . . , fN), the measured impedance including a measured real impedance R, a measured imaginary impedance X, and a measured complex impedance Z, the measured real impedance having a minimum value R0 at a frequency fm, (where fm\u2260f1 and fm\u2260fN);
(c) calculating an estimated impedance over the frequency range, the estimated impedance including an estimated real impedance RM, an estimated imaginary impedance XM, and an estimated complex impedance ZM using values for circuit elements of the equivalent circuit model provided in step (a);
(d) determining first and second evaluation functions over respective first and second sub-frequency ranges within the frequency range, the first frequency sub-range including frequencies f1\u2266fn\u2266fm, the second frequency sub-range including frequencies fm+1\u2266fn\u2266fN, each of the first and the second evaluation functions determining an error between the estimated impedance and the measured impedance by calculating a difference between each of 1) the estimated real impedance RM and the measured real impedance R subtracted by the minimum value R0, 2) the estimated imaginary impedance XM and the measured imaginary impedance X and 3) the estimated complex impedance ZM and the measured complex impedance Z,
the first evaluation function comprising:
A
\u2061
(
P
_
)
=
\u2211
n
=
1
m
\u2062
a
\u2061
(
R
M
\u2061
(
f
n
,
P
_
)
,
X
M
\u2061
(
f
n
,
P
_
)
,
R
\u2061
(
f
n
)
–
xR
0
,
X
\u2061
(
f
n
)
)
,
where
a
\u2061
(
R
M
,
X
M
,
R
,
X
)
=
c
R
\u2062
\uf603
R
M
–
(
R
–
xR
0
)
\uf604
2
\uf603
R
\uf604
d
+
c
X
\u2062
\uf603
X
M
–
X
\uf604
2
\uf603
X
\uf604
d
+
c
Z
\u2062
\uf603
Z
M
–
Z
\uf604
2
\uf603
Z
\uf604
d
,
the second evaluation function comprising:
B
\u2061
(
P
_
)
=
\u2211
n
=
m
+
1
N
\u2062
b
\u2061
(
R
M
\u2061
(
f
n
,
P
_
)
,
X
M
\u2061
(
f
n
,
P
_
)
,
R
\u2061
(
f
n
)
–
(
1
–
x
)
\u2062
R
0
,
X
\u2061
(
f
n
)
)
,
where
b
\u2061
(
R
M
,
X
M
,
R
,
X
)
=
c
R
\u2062
\uf603
R
M
–
(
R
–
(
1
–
x
)
\u2062
R
0
)
\uf604
2
\uf603
R
\uf604
d
+
c
X
\u2062
\uf603
X
M
–
X
\uf604
2
\uf603
X
\uf604
d
+
c
Z
\u2062
\uf603
Z
M
–
Z
\uf604
2
\uf603
Z
\uf604
d
,
and, for each of the first and the second evaluation functions, where 0\u2266x\u22661, {right arrow over (P)}=(P1,P2, . . . PK) is a circuit constant vector storing the values of the circuit elements and d, CR, CX, and CZ are positive real numbers or zero;
(e) applying the estimated impedance calculated in step (c) and the measured impedance inputted in step (b) to the first and the second evaluation functions determined in step (d);
(f) adjusting values of the estimated impedance to minimize the error between the estimated impedance and the measured impedance using the first evaluation function, thereby generating a part of element values of the equivalent circuit model of the passive element;
(g) adjusting the values of the estimated impedance to minimize the error between the estimated impedance and the measured impedance using the second evaluation function, thereby generating a further part of the element values of the equivalent circuit model of the passive element; and
(h) storing the part of the element values and the further part of the element values.
12. A computer implemented method of determining an equivalent circuit model of a passive element, said method comprising the steps of:
(a) providing the equivalent circuit model using an RCL circuit comprising an RC circuit and an RL circuit connected in series to the RC circuit, the RC circuit comprising a resistor and a capacitor, the RL circuit comprising a resistor and an inductor;
(b) inputting a measured impedance of the passive element over a frequency range (f1, . . . , fN), the measured impedance including a measured real impedance R, a measured imaginary impedance X, and a measured complex impedance Z, the measured real impedance having a minimum value R0 at a frequency fm, (where fm\u22601 and fm\u2260fN);
(c) calculating an estimated impedance over the frequency range, the estimated impedance including an estimated real impedance RM, an estimated imaginary impedance XM and an estimated complex impedance ZM using values for circuit elements of the equivalent circuit model provided in step (a);
(d) determining first and second evaluation functions over respective first and second sub-frequency ranges within the frequency range, the first frequency sub-range including frequencies f1\u2260fn\u2266Fm, the second frequency sub-range including frequencies fm+1\u2266fn\u2266fN, each of the first and the second evaluation functions determining an error between the estimated impedance and the measured impedance by calculating a difference between each of 1) the estimated real impedance RM and the measured real impedance R subtracted by the minimum value R0, 2) the estimated imaginary impedance XM and the measured imaginary impedance X and 3) the estimated complex impedance ZM and the measured complex impedance Z,
the first evaluation function comprising:
A
\u2061
(
P
_
)
=
\u2211
n
=
1
m
\u2062
a
\u2061
(
R
M
\u2061
(
f
n
,
P
_
)
,
X
M
\u2061
(
f
n
,
P
_
)
,
R
\u2061
(
f
n
)
–
xR
0
,
X
\u2061
(
f
n
)
)
,
where
a
\u2061
(
R
M
,
X
M
,
R
,
X
)
=
c
R
\u2062
\uf603
R
M
–
(
R
–
xR
0
)
\uf604
2
\uf603
R
\uf604
d
+
c
X
\u2062
\uf603
X
M
–
X
\uf604
2
\uf603
X
\uf604
d
+
c
Z
\u2062
\uf603
Z
M
–
Z
\uf604
2
\uf603
Z
\uf604
d
,
the second evaluation function comprising:
B
\u2061
(
P
_
)
=
\u2211
n
=
m
+
1
N
\u2062
b
\u2061
(
R
M
\u2061
(
f
n
,
P
_
)
,
X
M
\u2061
(
f
n
,
P
_
)
,
R
\u2061
(
f
n
)
–
(
1
–
x
)
\u2062
R
0
,
X
\u2061
(
f
n
)
)
,
where
b
\u2061
(
R
M
,
X
M
,
R
,
X
)
=
c
R
\u2062
\uf603
R
M
–
(
R
–
(
1
–
x
)
\u2062
R
0
)
\uf604
2
\uf603
R
\uf604
d
+
c
X
\u2062
\uf603
X
M
–
X
\uf604
2
\uf603
X
\uf604
d
+
c
Z
\u2062
\uf603
Z
M
–
Z
\uf604
2
\uf603
Z
\uf604
d
,
and, for each of the first and the second evaluation functions, where 0\u2266x\u22661, {right arrow over (P)}=(P1,P2, . . . PK) is a circuit constant vector storing the values of the circuit elements and d, CR, CX, and CZ are positive real numbers or zero;
(e) applying the estimated impedance calculated in step (c) and the measured impedance inputted in step (b) to the first and the second evaluation functions determined in step (d);
(f) adjusting values of the estimated impedance to minimize the error between the estimated impedance and the measured impedance using the first evaluation function, thereby generating a part of element values of the equivalent circuit model of the passive element;
(g) adjusting the values of the estimated impedance to minimize the error between the estimated impedance and the measured impedance using the second evaluation function, thereby generating a further part of the element values of the equivalent circuit model of the passive element; and
(h) storing the part of the element values and the further part of the element values.