Results 11 to 20 of about 6,580,241 (312)

Experimental Study of the Direct Drive Hydraulic System with the Torque Mode

Energies, 2021
The torque mode is more suitable for the direct drive 6 degree of freedom (6-DOF) parallel mechanism than the speed mode that both dynamic coupling and current coupling among motors are easily solved, but its key parameters and dynamic characteristics ...
Chenyang Zhang, Hongzhou Jiang
doaj   +1 more source

Design of Quasi-Halbach Permanent-Magnet Vernier Machine for Direct-Drive Urban Vehicle Application

Machines, 2023
Removing the gearbox from the single-motor configuration of an electric vehicle (EV) would improve motor-to-wheel efficiency by preventing mechanical losses, thus extending the autonomy of the EV. To this end, a permanent-magnet Vernier machine (PMVM) is
Walid Guendouz, Abdelmounaim Tounzi, Toufik Rekioua   +2 more
doaj   +1 more source

Design and Analysis of a Novel Double-Stator Double-Rotor Motor Drive System for In-Wheel Direct Drive of Electric Vehicles

Machines, 2021
In-wheel direct drive (IWDD) of electric vehicles (EVs), which simplifies the transmission system and facilitates flexible control of vehicle dynamics, has evolved considerably in the EV sector.
Chunzhen Li, Xinhua Guo, Jinyuan Fu, Weinong Fu, Yulong Liu, Hao Chen, Rongkun Wang, Zhongshen Li   +7 more
doaj   +1 more source

Stanford Doggo: An Open-Source, Quasi-Direct-Drive Quadruped [PDF]

IEEE International Conference on Robotics and Automation, 2019
This paper presents Stanford Doggo, a quasi-direct-drive quadruped capable of dynamic locomotion. This robot matches or exceeds common performance metrics of state-of-the-art legged robots.
Nathan Kau, Aaron Schultz, N. Ferrante, Patrick Slade   +3 more
semanticscholar   +1 more source

Development and Wave Tank Demonstration of a Fully Controlled Permanent Magnet Drive for a Heaving Wave Energy Converter

Energies, 2022
One option for converting the energy in sea waves into renewable electricity is the development of floating wave energy converters coupled to electrical generators.
Nick J. Baker, Ahmed Almoraya, Mohammad A. H. Raihan, Steve McDonald, Luke McNabb   +4 more
doaj   +1 more source

Cooling Techniques in Direct-Drive Generators for Wind Power Application

Energies, 2022
Direct-drive generators are an attractive candidate for wind power application since they do not need a gearbox, thus increasing operational reliability and reducing power losses.
Petrica Taras, Reza Nilifard, Zi-Qiang Zhu, Ziad Azar   +3 more
doaj   +1 more source

Quasi-Direct Drive for Low-Cost Compliant Robotic Manipulation [PDF]

IEEE International Conference on Robotics and Automation, 2019
Robots must cost less and be force-controlled to enable widespread, safe deployment in unconstrained human environments. We propose Quasi-Direct Drive actuation as a capable paradigm for robotic force-controlled manipulation in human environments at low ...
David V. Gealy, Stephen McKinley, Brent Yi, Philipp Wu, Phillip R. Downey, Greg Balke, Allan Zhao, Menglong Guo, Rachel Thomasson, A. Sinclair, Peter Cuellar, Zoe McCarthy, P. Abbeel   +12 more
semanticscholar   +1 more source

Design, Analysis, and Verification of an Electro- Hydrostatic Actuator for Distributed Actuation System

Sensors, 2020
In order to provide a simplified and low-cost solution of the terminal for a distributed actuation system, this paper proposes an electro-hydrostatic actuator (EHA) based on the linear drive principle. The proposed actuator is directly driven by a linear
Yang Li, Zongxia Jiao, Zimeng Wang
doaj   +1 more source

Feasibility study of using amplified piezo-stack actuators for the actuation of direct drive servovalves [PDF]

E3S Web of Conferences, 2020
In this paper, we investigate the idea of using, in place of recent linear force motors, amplified piezo-stack actuators for the actuation of direct drive servovalves, in order to exploit the fast response of piezoelements accompanied by the increased ...
Tamburrano Paolo, De Palma Pietro, Plummer Andrew R., Distaso Elia, Amirante Riccardo   +4 more
doaj   +1 more source

Refined Modeling Method and Analysis of an Electromagnetic Direct-Drive Hydrostatic Actuation System

Actuators, 2022
The hydrostatic actuation system based on linear actuators improves the complex piston force and long transmission path of the traditional electro-hydrostatic actuator (EHA).
Jiayu Lu, Chaofan Gu, Yanjun Zhao, Cao Tan, Yingtao Lu, Changzhong Fu   +5 more
doaj   +1 more source