TY - GEN
T1 - LEVERAGING FLOW REGENERATION IN INDIVIDUAL ENERGY-EFFICIENT HYDRAULIC DRIVES
AU - Padovani, Damiano
N1 - Publisher Copyright:
Copyright © 2021 by ASME.All right reserved.
PY - 2021
Y1 - 2021
N2 - The current demand for energy efficiency in hydraulics directs towards the replacement of centralized, valve-controlled actuators with individual, throttleless drives. The resulting solutions often require an undesirable sizing of the key components to expand the system's operating region. Using flow regeneration (i.e., shortcutting the actuator's chambers) mitigates this issue. Such an option, already stated for individual drives, lacks an in-depth analysis from the control perspective since the dynamic properties are changed (e.g., the natural frequency is decreased to about 60% of the original value). Therefore, this research paper studies a representative singlepump architecture arranged in a closed-circuit configuration. Linear control techniques are used to understand the system dynamics and design a PI-control algorithm that also adds active damping. The outcomes are validated via high-fidelity simulations referring to a single-boom crane as the study case. The results encompassing diverse scenarios indicate that flow regeneration is only interesting in those applications where the dynamic response is not demanding. In fact, the lower natural frequency reduces the system's bandwidth to about 69% of the original value and affects the closed-loop position tracking drastically. This poor performance becomes evident when medium-to-high actuation velocity is commanded with respect to the maximum value.
AB - The current demand for energy efficiency in hydraulics directs towards the replacement of centralized, valve-controlled actuators with individual, throttleless drives. The resulting solutions often require an undesirable sizing of the key components to expand the system's operating region. Using flow regeneration (i.e., shortcutting the actuator's chambers) mitigates this issue. Such an option, already stated for individual drives, lacks an in-depth analysis from the control perspective since the dynamic properties are changed (e.g., the natural frequency is decreased to about 60% of the original value). Therefore, this research paper studies a representative singlepump architecture arranged in a closed-circuit configuration. Linear control techniques are used to understand the system dynamics and design a PI-control algorithm that also adds active damping. The outcomes are validated via high-fidelity simulations referring to a single-boom crane as the study case. The results encompassing diverse scenarios indicate that flow regeneration is only interesting in those applications where the dynamic response is not demanding. In fact, the lower natural frequency reduces the system's bandwidth to about 69% of the original value and affects the closed-loop position tracking drastically. This poor performance becomes evident when medium-to-high actuation velocity is commanded with respect to the maximum value.
KW - Displacement control
KW - Energy efficiency
KW - Flow regeneration
KW - Hydraulic system
KW - Speed control
UR - http://www.scopus.com/inward/record.url?scp=85122570683&partnerID=8YFLogxK
U2 - 10.1115/FPMC2021-68594
DO - 10.1115/FPMC2021-68594
M3 - 会议稿件
AN - SCOPUS:85122570683
T3 - Proceedings of ASME/BATH 2021 Symposium on Fluid Power and Motion Control, FPMC 2021
BT - Proceedings of ASME/BATH 2021 Symposium on Fluid Power and Motion Control, FPMC 2021
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME/BATH 2021 Symposium on Fluid Power and Motion Control, FPMC 2021
Y2 - 19 October 2021 through 21 October 2021
ER -
