Results 31 to 40 of about 112,422 (307)

Remote rapidly varying pressures accurately measured [PDF]

, 1965
Transmitting-damping tube with one end closed, the other open to a pressure source, has a pressure sensor connected to a port close to the pressure source.

core   +1 more source

Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications

FEBS Open Bio, EarlyView.
This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley   +1 more source

Hoop strain-Based Approach to Detecting Leak Phenomena

e-Journal of Nondestructive Testing
Detecting leakage in aging underground pipeline remains challenging due to limited accessibility and complex hydraulic conditions. This study explores a transient damping-based method for leakage detection using both internal water pressure and external
Yuto Takahashi, Toma Tsubota, Taiki Hagiwara, Tetsuya Suzuki   +3 more
doaj   +1 more source

Transient beam loading in the SLC damping rings [PDF]

Proceedings Particle Accelerator Conference, 2002
Effects arising from heavy beam loading in the Stanford Linear Collider (SLC) damping rings are described. The stability of the RF system and particle beam is studied using a numerical model of the beam cavity interaction with multiple feedback loops. Nonlinearities of the power source are also considered.
Minty, M. G., Siemann, R. H.
openaire   +1 more source

Oscillatory transient regime in the forced dynamics of a spin torque nano-oscillator

, 2009
We demonstrate that the transient non-autonomous dynamics of a spin torque nano-oscillator (STNO) under a radio-frequency (rf) driving signal is qualitatively different from the dynamics described by the Adler model.
A. Blaquiere, A. Pikovsky, Andrei Slavin, Bruno Azzerboni, Ezio Iacocca, Giancarlo Consolo, Johan Åkerman, Vasil Tiberkevich, Yan Zhou   +8 more
core   +1 more source

Current Tracking Adaptive Control of Brushless DC Motors

International Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García, Axel Coronado‐Andrade, Gerardo Espinosa‐Pérez, Luis Alvarez‐Icaza   +3 more
wiley   +1 more source

Adaptive Feedforward Cancellation Scheme Temporarily Using Negative Damping to Speed Up the Transient Response When Counteracting Periodic Disturbances

IEEE Access
Adaptive Feedforward Cancellation (AFC) is commonly used to counteract periodic disturbances in mechatronic systems in order to enhance the control performance. So far, AFC algorithms either use no or positive damping.
Shota Yabui, Robin Oswald, Takenori Atsumi   +2 more
doaj   +1 more source

Ultrafast dynamics of coherent optical phonons and nonequilibrium electrons in transition metals [PDF]

, 2005
The femtosecond optical pump-probe technique was used to study dynamics of photoexcited electrons and coherent optical phonons in transition metals Zn and Cd as a function of temperature and excitation level.
A. Debernardi, C. K. Sun, D. Pines, J.-C. Diels, Jure Demsar, Kiminori Ushida, Kunie Ishioka, M. Cardona, M. I. Kaganov, Masahiro Kitajima, Muneaki Hase, P. Grosse, R. H. M. Groeneveld, S. I. Anisimov, T. Dekorsy   +14 more
core   +2 more sources

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

Enhanced active power response control for virtual synchronous generators: An active power compensation combined with feedback damping strategy

International Journal of Electrical Power & Energy Systems
The virtual synchronous generator (VSG) can enhance frequency stability and system robustness by providing sufficient inertia, particularly in scenarios with large-scale renewable energy integration.
Yan Xia, Yang Chen, Qingya Song, Shengyong Ye, Qinyuan Huang, Yiqiang Yang, Wei Li, Yao Wang   +7 more
doaj   +1 more source