TY - GEN
T1 - Improvement of driving efficiency of ultrasonic motor by improvement of vibration configuration
AU - Kumamoto, Shogo
AU - Hosoda, Kyohei
AU - Takemura, Kenjiro
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/10/20
Y1 - 2014/10/20
N2 - An ultrasonic motor is generally composed of a vibrator and a rotor, and is driven by the frictional force between the vibrator/rotor. Since the contact points on the vibrator draw elliptic trajectory, relative speed of the point against the rotor varies even when the rotor rotates with a constant speed. This may cause abrasion between the vibrator/rotor and decrease in driving efficiency. This research proposes a novel method to reduce the relative speed to improve the driving efficiency of ultrasonic motors by superimposing harmonic vibrations with driving vibration. Results of numerical calculation show that driving efficiency may be improved by 27% by the proposed method.
AB - An ultrasonic motor is generally composed of a vibrator and a rotor, and is driven by the frictional force between the vibrator/rotor. Since the contact points on the vibrator draw elliptic trajectory, relative speed of the point against the rotor varies even when the rotor rotates with a constant speed. This may cause abrasion between the vibrator/rotor and decrease in driving efficiency. This research proposes a novel method to reduce the relative speed to improve the driving efficiency of ultrasonic motors by superimposing harmonic vibrations with driving vibration. Results of numerical calculation show that driving efficiency may be improved by 27% by the proposed method.
KW - Efficiency
KW - Superimposing harmonic vibration
KW - Ultrasonic Motor
UR - http://www.scopus.com/inward/record.url?scp=84910071872&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84910071872&partnerID=8YFLogxK
U2 - 10.1109/ULTSYM.2014.0530
DO - 10.1109/ULTSYM.2014.0530
M3 - Conference contribution
AN - SCOPUS:84910071872
T3 - IEEE International Ultrasonics Symposium, IUS
SP - 2129
EP - 2132
BT - IEEE International Ultrasonics Symposium, IUS
PB - IEEE Computer Society
T2 - 2014 IEEE International Ultrasonics Symposium, IUS 2014
Y2 - 3 September 2014 through 6 September 2014
ER -