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PID fuzzy control applied to an electrosurgical unit for power regulation

Ali Mohammed Ridha
Ali Mohammed Ridha
, 
Ali Jafer Mahdi
Ali Jafer Mahdi
, 
Jameel Kadhim Abed
Jameel Kadhim Abed
 y 
Shah Fahad
Shah Fahad
   | 24 oct 2020
Journal of Electrical Bioimpedance's Cover Image
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Publicado en línea: 24 oct 2020
Páginas: 72 - 80
Recibido: 28 jul 2020
DOI: https://doi.org/10.2478/joeb-2020-0011
Palabras clave
© 2020 Ali Mohammed Ridha et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig.1

Mono-polar ESU Modes.
Mono-polar ESU Modes.

Fig.2

Bi-polar ESU Modes.
Bi-polar ESU Modes.

Fig.3

Block diagram of the proposed ESU.
Block diagram of the proposed ESU.

Fig.4

Equivalent electric circuit of a biological tissue.
Equivalent electric circuit of a biological tissue.

Fig.5

PID-ZNS controller for the proposed ESU.
PID-ZNS controller for the proposed ESU.

Fig.6

FLC-PID controller for the proposed ESU.
FLC-PID controller for the proposed ESU.

Fig.7

Buck converter for proposed ESU.
Buck converter for proposed ESU.

Fig.8

High-frequency inverter for the proposed ESU.
High-frequency inverter for the proposed ESU.

Fig.9

ESU output RMS voltage for original controller.
ESU output RMS voltage for original controller.

Fig.10

RMS output voltage for proposed ESU with PID-ZNS and FLC-PID controller.
RMS output voltage for proposed ESU with PID-ZNS and FLC-PID controller.

Fig.11

ESU output RMS current for the original controller.
ESU output RMS current for the original controller.

Fig.12

RMS output current for the proposed ESU with PID-ZNS and FLC-PID controller.
RMS output current for the proposed ESU with PID-ZNS and FLC-PID controller.

Fig.13

ESU output power for the original controller.
ESU output power for the original controller.

Fig.14

Output power for the proposed ESU with PID-ZNS and FLCPID controller.
Output power for the proposed ESU with PID-ZNS and FLCPID controller.

Fig.15

Power signal for the proposed ESU with PID-ZNS and FLCPID controller (Zoomed).
Power signal for the proposed ESU with PID-ZNS and FLCPID controller (Zoomed).

Simulation specifications of the proposed ESU.

Description Symbol Value, Unit
Source Voltage 24 V
Buck Converter
L 33 μH
C 220 μF
Switching frequency 500 kHz
Tissue Impedance
1st layer, Z1 90 Ω
2nd layer, Z2 60 Ω
3rd layer, Z3 30 Ω
Zmin 130 Ω
PID Parameters
kp ZNS method 0.0102
ki 13.16
kd 1.98e-6
kpref FLC method 0.0102
kiref 13.16
kdref 1.98e-6
kpnew 0.0114
kinew 13.197
kdnew 2.005e-6
Power Reference 50 W
High-Frequency Transformer
L1 40 μH
L2 0.1 μH
L3 0.1 μH

Summary of results.

Performance criteria Original Controller PID-ZNS PID-FLC
Power increasing 36.20% 17.00% 10.00%
OS% of voltage 0.34% 3.70% 2.07%
OS% of current 0.93% 4.26% 2.22%
OS% of Power 0.80% 7.60% 4.20%
STD of voltage 3.38% 3.85% 3.04%
STD of current 3.72% 4.51% 3.39%
STD of Power 36.40% 18.00% 10.60%
Tr of voltage 0.37 ms 0.9 ms 0.89 ms
Tr of current 0.37 ms 0.9 ms 0.89 ms
Tr of power 0.37 ms 0.9 ms 0.89 ms
Ts of voltage unstable 2.4 ms 2.1 ms
Ts of current unstable 2.4 ms 2.1 ms
Ts of power unstable 2.4 ms 2.1 ms
(Z1 to Z2) period (0–0.01) sec
Performance criteria PID-ZNS PID-FLC
Power increasing 7.60% 4.20%
OS% of voltage 3.70% 2.07%
OS% of current 4.26% 2.22%
(Z2 to Z3) period (0.01–0.02) sec
Performance criteria PID-ZNS PID-FLC
Power increasing 14.00% 9.00%
OS% of voltage 3.34% 3.15%
OS% of current 7.08% 7.08%
(Z3) period (0.02–0.03) sec
Performance criteria PID-ZNS PID-FLC
Power increasing 17.00% 10.00%
OS% of voltage 3.45% 3.25%
OS% of current 9.00% 8.53%
eISSN:
1891-5469
Idioma:
Inglés
Calendario de la edición:
Volume Open
Temas de la revista:
Engineering, Bioengineering and Biomedical Engineering, Biomedical Electronics, Life Sciences, Biophysics, Medicine, Biomedical Engineering, Physics, Spectroscopy and Metrology
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