Results 11 to 20 of about 15,047 (298)
Single-Particle Self-Excited Oscillator [PDF]
Physical Review Letters, 2005 Electronic feedback is used to self-excite the axial oscillation of a single electron in a Penning trap. Large, stable, easily detected oscillations arise even in an anharmonic potential. Amplitudes are controlled by adjusting the feedback gain, and frequencies can be made nearly independent of amplitude fluctuations.
D'Urso, B. +4 more
openaire +4 more sources
Side force control on slender body by self-excited oscillation flag
Theoretical and Applied Mechanics Letters, 2016 Strong asymmetrical vortices appear on the leeward of slender body at high angles of attack, which has very unfavorable effect on the stability and control of the aircraft. A method is developed to control the side force of slender body at high angles of
Jian Zhai +5 more
doaj +2 more sources
Self-Excited Microcantilever with Higher Mode Using Band-Pass Filter [PDF]
Sensors, 2023 Microresonators have a variety of scientific and industrial applications. The measurement methods based on the natural frequency shift of a resonator have been studied for a wide range of applications, including the detection of the microscopic mass and ...
Yuji Hyodo, Hiroshi Yabuno
doaj +2 more sources
Self- excited oscillation under the influence of non - linear frictions
Vietnam Journal of Mechanics, 1982 In this article the influence of friction R1, R2 on Van der Pol oscillator is considered. It turned out that the mentioned frictions decrease the amplitude of self – excited oscillations and they stabilize the equilibrium position of the self – excited ...
Nguyen Van Dao
doaj +2 more sources
Numerical Analysis of Oscillation Death in Coupled Self-Excited Elastic Beams
Advances in Mechanical Engineering, 2012 The emergence of the oscillation death phenomenon in a ring of four coupled self-excited elastic beams is numerically explored in this work. The beams are mathematically represented through partial differential equations which are solved by means of the ...
Miguel A. Barron +2 more
doaj +2 more sources
Experimental Investigation on Surface Quality Processed by Self-Excited Oscillation Pulsed Waterjet Peening. [PDF]
Materials (Basel), 2017 High-speed waterjet peening technology has attracted a lot of interest and is now being widely studied due to its great ability to strengthen metal surfaces. In order to further improve the mechanical properties of metals, self-excited oscillation pulsed
Ding X, Kang Y, Li D, Wang X, Zeng D.
europepmc +2 more sources
Study on Self-Excited Oscillation Suppression of Supersonic Inlet Based on Parallel Cavity
Frontiers in Energy Research, 2022 Aiming at the problem of self-excited oscillation in a supersonic inlet, the oscillation suppression of parallel cavities in a shock system is studied. Based on the shock dynamic model, the theoretical calculation model of parallel cavity under dynamic ...
FeiChao Cai, Xing Huang
doaj +1 more source
Self-excited mono-ion oscillator [PDF]
Proceedings of the National Academy of Sciences, 1986 We propose self-excitation as a potentially more sensitive technique for studying a mono-ion oscillator of frequency v z ≈ 0.1-100 MHz. This technique also makes only low demands on the harmonicity of the ion oscillation.
H, Dehmelt, W, Nagourney, J, Sandberg
openaire +2 more sources
Experimental Studies on Suppression of Combustion Instability with the Addition of Helium [PDF]
Journal of Applied Fluid Mechanics, 2022 When combustion instability occurs, fluctuation in the release of heat couples with oscillating pressure, while the sensitivity of flame to acoustic disturbance restricts the oscillation intensity.
Y. Liu, J. Li, Z. Tian, T. Zhang, Y. Yan
doaj +1 more source
Test section of the wind tunnel IT for aeroelastic experiments with blade cascades [PDF]
EPJ Web of Conferences, 2019 The article presents the way how the existing small vacuum aerodynamic tunnel IT (Institute of Thermomechanics) has been adapted for the measurement of the aeroelastic properties of the NACA 0015 airfoil and of the blade cascades composed of various ...
Vlček Václav, Procházka Pavel
doaj +1 more source