TY - JOUR
T1 - Ripple reduction control of the undulation pump total artificial heart
AU - Saito, Itsuro
AU - Chinzei, Tsuneo
AU - Mochizuki, Shuichi
AU - Abe, Yusuke
AU - Isoyama, Takashi
AU - Iwasaki, Kiyotaka
AU - Suzuki, Takafumi
AU - Karita, Tatsuro
AU - Ono, Toshiya
AU - Kouno, Akimasa
AU - Ishimaru, Mitsuhiko
AU - Baba, Atsushi
AU - Ozeki, Toshinaga
AU - Tohyama, Takahiro
AU - Kobayashi, Shin Ichi
AU - Imachi, Kou
PY - 2002
Y1 - 2002
N2 - An undulation pump total artificial heart (UPTAH) in which the revolutions of the motor are converted to undulation motion of a disk has been developed. In an experiment, a goat using the UPTAH survived for 54 days. However, a large ripple was observed in the device's output pressure and flow waveform. In calculating the spectrum of the ripple, we found that the ripple mainly comprised 2 frequency sine waves: 1 having the same frequency as and 1 having double the frequency of the motor revolutions. To reduce the ripple, 2 sine waves, 1 having the same frequency as and 1 having double the frequency of the motor revolutions, were provided to the motor current to modulate the pulse width of the pulse width modulation controlling the motor revolutions. This ripple control method reduced the pressure ripple by 90% in a mock circulation and by 70% in animal experiments. These results revealed that the ripple generated in the UPTAH could be controlled through the use of motor control software.
AB - An undulation pump total artificial heart (UPTAH) in which the revolutions of the motor are converted to undulation motion of a disk has been developed. In an experiment, a goat using the UPTAH survived for 54 days. However, a large ripple was observed in the device's output pressure and flow waveform. In calculating the spectrum of the ripple, we found that the ripple mainly comprised 2 frequency sine waves: 1 having the same frequency as and 1 having double the frequency of the motor revolutions. To reduce the ripple, 2 sine waves, 1 having the same frequency as and 1 having double the frequency of the motor revolutions, were provided to the motor current to modulate the pulse width of the pulse width modulation controlling the motor revolutions. This ripple control method reduced the pressure ripple by 90% in a mock circulation and by 70% in animal experiments. These results revealed that the ripple generated in the UPTAH could be controlled through the use of motor control software.
KW - Ripple reduction control
KW - Total artificial heart
KW - Undulation pump
UR - http://www.scopus.com/inward/record.url?scp=0036124902&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036124902&partnerID=8YFLogxK
U2 - 10.1046/j.1525-1594.2002.06798.x
DO - 10.1046/j.1525-1594.2002.06798.x
M3 - Article
C2 - 11872010
AN - SCOPUS:0036124902
SN - 0160-564X
VL - 26
SP - 40
EP - 44
JO - Artificial Organs
JF - Artificial Organs
IS - 1
ER -