Results 21 to 30 of about 234,043 (311)
Компьютерная оптика, 2022 Topography is the study of an area on the earth's surface. This term relates to the land's slope or contour, which is the interval of elevation differences between two adjacent and parallel contour lines. Topography generally presents a three-dimensional
P. Musa +4 more
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International Journal of Advanced Robotic Systems, 2013 Off-pump coronary artery bypass graft surgery outperforms the traditional on-pump surgery because the assisted robotic tools can cancel the relative motion between the beating heart and the robotic tools, which reduces post-surgery complications for ...
Fan Liang, Xiaofeng Meng
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A New Type of Hydraulic Muscle
Actuators, 2016 This paper presents the invention and development of a new fundamental type of hydraulic actuator, aimed at delivering better actuation efficiency. This actuator is a flexible tube, composed of two different materials, which deflects while applying inner
Nitai Drimer +2 more
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Multivariate Autoregressive Model Based Heart Motion Prediction Approach for Beating Heart Surgery
International Journal of Advanced Robotic Systems, 2013 A robotic tool can enable a surgeon to conduct off-pump coronary artery graft bypass surgery on a beating heart. The robotic tool actively alleviates the relative motion between the point of interest (POI) on the heart surface and the surgical tool and ...
Fan Liang, Xiaofeng Meng, Yang Yu
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Foundations and Challenges of Low-Inertia Systems (Invited Paper)
Power Systems Computation Conference, 2018 The electric power system is currently undergoing a period of unprecedented changes. Environmental and sustainability concerns lead to replacement of a significant share of conventional fossil fuel-based power plants with renewable energy resources. This
F. Milano +4 more
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On the Inertia of Future More-Electronics Power Systems
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2019 Inertia plays a vital role in maintaining the frequency stability of power systems. However, the increase of power electronics-based renewable generation can dramatically reduce the inertia levels of modern power systems.
Jingyang Fang +3 more
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Improvement of Frequency Regulation in VSG-Based AC Microgrid Via Adaptive Virtual Inertia
IEEE transactions on power electronics, 2020 A virtual synchronous generator (VSG) control based on adaptive virtual inertia is proposed to improve dynamic frequency regulation of microgrid. When the system frequency deviates from the nominal steady-state value, the adaptive inertia control can ...
Xiaochao Hou +5 more
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Design of Motion Controller for Satellite-Borne Data Transmission Antenna
International Journal of Aerospace Engineering, 2019 In order to realize stable, reliable, and high-precision motion control of the satellite-borne data transmission antenna, a FPGA-based motion controller is designed and achieved.
Lijiao Li +4 more
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Frontiers in Energy Research, 2022 Large-scale photovoltaic (PV) generation grid connection causes lack of inertia and insufficient frequency regulation capacity of power system. To solve this problem, this study proposed the active power-frequency droop control (APFDC) and virtual ...
Xuan Fu +3 more
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International Journal of Advanced Robotic Systems, 2013 Off-pump Coronary Artery Bypass Graft (CABG) surgery outperforms traditional on-pump surgery because the assisted robotic tools can alleviate the relative motion between the beating heart and robotic tools.
Fan Liang +3 more
doaj +1 more source