Results 1 to 10 of about 1,710,535 (310)

Minimum Quantity Lubrication Jet Noise: Passive Control [PDF]

Micromachines, 2023
Jet noise is a common problem in minimum quantity lubrication (MQL) technology. This should be given great attention because of its serious impacts on the physical and mental health of the operators.
Xiaodong Hu, Junhao Yu, Yuanlong Li, Yu Xia, Xuefeng Xu, Ruochong Zhang   +5 more
doaj   +2 more sources

Passive Control in a Continuous Beam under a Traveling Heavy Mass: Dynamic Response and Experimental Verification [PDF]

Sensors
The motion of a heavy mass on a bridge span causes vibrations whose magnitude and frequency content depend on the mechanical properties of the structural system, including the magnitude of that mass and its speed of traverse. In order to limit vibrations
George D. Manolis, Georgios I. Dadoulis
doaj   +2 more sources

Passive Compliance Control of Aerial Manipulators [PDF]

2018 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2018
This paper presents a passive compliance control for aerial manipulators to achieve stable environmental interactions. The main challenge is the absence of actuation along body-planar directions of the aerial vehicle which might be required during the ...
Balachandran, Ribin, De Stefano, Marco, Kim, Min Jun, Kondak, Konstantin, Ott, Christian   +4 more
core   +4 more sources

A Simple Critical Response Evaluation Method for Base-Isolation Building-Connection Hybrid System Under Double Impulse as Representative of Near-Fault Ground Motion

Frontiers in Built Environment, 2021
We revisit a unique building system including a base-isolation, building-connection hybrid control system. The base-isolation system withstands pulse-type earthquake ground motions effectively and the building-connection system resists long-duration ...
Tomoya Nakamura, Kohei Fujita, Izuru Takewaki   +2 more
doaj   +1 more source

Fluid–Structure Interaction Analysis of a Wind Turbine Blade with Passive Control by Bend–Twist Coupling

Energies, 2023
The idea of improving the energy output for small wind turbines without compromising the remaining aspects of the technology, such as costs and structural integrity, is very appealing in the context of the growing concern for global warming and the goal ...
Jorge Mario Tamayo-Avendaño, Ivan David Patiño-Arcila, César Nieto-Londoño, Julián Sierra-Pérez   +3 more
doaj   +1 more source

Evaluation and Comparison of SEA Torque Controllers in a Unified Framework

Actuators, 2023
Series elastic actuators (SEA) with their inherent compliance offer a safe torque source for robots that are interacting with various environments, including humans.
Wolfgang Rampeltshammer, Arvid Keemink, Menno Sytsma, Edwin van Asseldonk, Herman van der Kooij   +4 more
doaj   +1 more source

Effect of a Control Mechanism on the Interaction between a Rectangular Jet and a Slotted Plate: Experimental Study of the Aeroacoustic Field

Fluids, 2023
The aeroacoustic field of a rectangular subsonic jet impinging on a slotted plate was investigated experimentally using microphones and stereoscopic particle image velocimetry (S-PIV).
Nour Eldin Afyouni, Marwan Alkheir, Hassan Assoum, Bilal El Zohbi, Kamel Abed-Meraim, Anas Sakout, Mouhammad El Hassan   +6 more
doaj   +1 more source

Suppression of Vortex-Induced Vibration and Phase-Averaged Analysis of the Wake Generated by a Circular Cylinder Covered with Helical Grooves

Fluids, 2022
The effect of triple helical grooves on the suppression of vortex-induced vibration (VIV) of a circular cylinder was investigated experimentally in a wind tunnel over Reynolds number in the range of 1 × 104 < Re < 4 × 104.
Zhiyong Hao, Chenlin Sun, Yucen Lu, Kaiming Bi, Tongming Zhou   +4 more
doaj   +1 more source

Generation and Mitigation Mechanism Studies of Nonlinear Thermoacoustic Instability in a Modelled Swirling Combustor with a Heat Exchanger

Aerospace, 2021
In the present work, 3D Unsteady Reynolds-Averaged Navier-Stokes (URANS) simulations are performed to investigate the generation and mitigation mechanism of combustion-sustained thermoacoustic instabilities in a modelled swirl combustor.
Yuze Sun, Dan Zhao, Xiaowei Zhu
doaj   +1 more source

Passive Sliding Mode Control Strategy for PCHD Model of MMC in Unbalanced Power Grid

Zhongguo dianli, 2023
When the voltage of the power grid is unbalanced, the DC transmission and distribution system using modular multilevel converters (MMC) as converter devices will encounter problems such as AC current asymmetry and secondary pulsation of active and ...
Daobing LIU, Miaosheng BAO, Shichun Li, Hancong Guo, Yingying Guo, Yue Qi   +5 more
doaj   +1 more source