Biomedical Engineering Reference
In-Depth Information
0.0
−
5.0
Sample A1
Sample A2
Sample A3
Sample A4
−
10.0
−
15.0
−
20.0
−
25.0
−
30.0
−
35.0
−
40.0
−
45.0
0.001
0.010
0.100
1.000
FIGURE 7.36
Phase of the electromechanical impedance at 0.5 V.
7.4.8
C
ONCLUSIONS
1.
The electromechanical impedance of the ionic polymer material was con-
sistent over the five samples tested.
2.
The impedance of the samples had a significant reactive component in
the range of 5-10 Hz, but become primarily real (resistive) above approx-
imately 100 Hz. The resistance of the samples was on the order of 1.2
Ω
in the range of 100-1000 Hz.
3.
The samples were highly capacitive at low frequencies. This attribute
could complicate the development of the actuator power electronics.
