TY - GEN
T1 - Continuously Variable Transmission by High-speed Path Switching of Linear Electro-hydrostatic Actuator
AU - Sugihara, Kei
AU - Nozaki, Takahiro
AU - Murakami, Toshiyuki
N1 - Funding Information:
This research was supported in part by the Ministry of Education, Culture, Sports, Science and Technology of Japan under Grant-in-Aid for Encouragement of Young Scientists (A), 16H06079, 2016.
Publisher Copyright:
© 2019 IEEE.
PY - 2019/10
Y1 - 2019/10
N2 - In robotic systems, reduction drives are utilized to increase actuators' force. Actuators with a constant reduction ratio can not achieve characteristics of both high velocity driving and high force driving. In order to perform various tasks, high force drive and high velocity drive are required for robotic actuators since required driving characteristics are different among tasks. Therefore, a mechanism which can change a reduction ratio continuously is needed. This paper proposes a mechanism that can change a reduction ratio with a linear electro-hydrostatic actuator (EHA). The proposed mechanism switches between two discrete reduction ratios by switching two oil paths with solenoid valves. Furthermore, this paper realizes a continuously variable reduction ratio by switching the solenoid valves quickly. This paper confirms that the reduction ratio changes continuously and widely by simulations.
AB - In robotic systems, reduction drives are utilized to increase actuators' force. Actuators with a constant reduction ratio can not achieve characteristics of both high velocity driving and high force driving. In order to perform various tasks, high force drive and high velocity drive are required for robotic actuators since required driving characteristics are different among tasks. Therefore, a mechanism which can change a reduction ratio continuously is needed. This paper proposes a mechanism that can change a reduction ratio with a linear electro-hydrostatic actuator (EHA). The proposed mechanism switches between two discrete reduction ratios by switching two oil paths with solenoid valves. Furthermore, this paper realizes a continuously variable reduction ratio by switching the solenoid valves quickly. This paper confirms that the reduction ratio changes continuously and widely by simulations.
KW - Continuously variable transmission
KW - cylinder
KW - electro-hydrostatic actuator
KW - force
KW - solenoid valve
KW - velocity
UR - http://www.scopus.com/inward/record.url?scp=85084047898&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85084047898&partnerID=8YFLogxK
U2 - 10.1109/IECON.2019.8927282
DO - 10.1109/IECON.2019.8927282
M3 - Conference contribution
AN - SCOPUS:85084047898
T3 - IECON Proceedings (Industrial Electronics Conference)
SP - 3603
EP - 3608
BT - Proceedings
PB - IEEE Computer Society
T2 - 45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019
Y2 - 14 October 2019 through 17 October 2019
ER -