Results 1 to 10 of about 4,540,131 (238)

Synthesis of nonlinear elastic couplings on the basis of modified kinematic graphs

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2017
In this work the analytical research of existing elastic couplings with linear mechanical feedback and synthesis was carried out taking into account passive elastic couplings with nonlinear mechanical feedback.
Ігор Іванович Сидоренко   +1 more
doaj   +7 more sources

Equivalent stiffness of elastic coupling with nonlinear mechanical feedback

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2013
The design of nonlinear elastic coupling mechanical feedback. The developed design scheme, which is derived from the dependence that makes its own equivalent stiffness of the elastic coupling.
Ігор Іванович Сидоренко   +1 more
doaj   +5 more sources

Non-Reciprocal Supratransmission in Mechanical Lattices with Non-Local Feedback Control Interactions

open access: yesCrystals, 2021
We numerically investigate the supratransmission phenomenon in an active nonlinear system modeled by the 1D/2D discrete sine-Gordon equation with non-local feedback.
Jack E. Pechac, Michael J. Frazier
doaj   +1 more source

Nonlinear Position Control Using Only Position Feedback under Position Errors and Yaw Constraints for Air Bearing Planar Motors

open access: yesMathematics, 2020
In this paper, we propose a nonlinear position control using only position feedback to guarantee the tolerances for position tracking errors and yaw. In the proposed method, both mechanical and electrical dynamics are considered.
Wonhee Kim, Donghoon Shin, Youngwoo Lee
doaj   +1 more source

Passivity Analysis of Nonlinear Euler-Bernoulli Beams [PDF]

open access: yesModeling, Identification and Control, 2002
The Lagrangian equations for distributed-parameter systems based on Hamilton's principle are developed. These equations are subsequently used to derive nonlinear models for beams. The passivity properties of the flexible mechanical systems based on their
Mehrdad P. Fard
doaj   +1 more source

Amplitude stabilization of micromechanical oscillators using engineered nonlinearity

open access: yesPhysical Review Research, 2021
Micromechanical oscillators provide periodic output signals for clocks and sensors by vibrating in a single mechanical mode. The mode is conventionally excited into self-sustained oscillations and stabilized with an external electronic feedback loop.
James M. L. Miller   +4 more
doaj   +1 more source

Nonlinear flexural response of a suspended Au nanobeam structure undergoing an electromigration-lead breakdown

open access: yesAIP Advances, 2020
The nonlinear resonance response of electromechanical structures, such as Duffing resonators, can discern both geometrical and internal anomalies, such as the “softening” response attributed to deviations from an ideal parallel plane for the former and ...
Seokwon Kang   +2 more
doaj   +1 more source

Nonlinear Fractional Active Disturbance Rejection Speed Control for Stabilization of Hydraulic Turbine Regulating Systems With Mechanical Delay

open access: yesIEEE Access, 2021
An improved fractional-order nonlinear active disturbance rejection speed control (FO-NADRC) method is proposed for hydraulic turbine regulating systems (HTRSs) with a mechanical delay.
Bo Ai, Ting Liu, Zhe Zhang, Bin Wang
doaj   +1 more source

Feedback Control of a Nonlinear Electrostatic Force Transducer

open access: yesSensors, 2020
We document a feedback controller design for a nonlinear electrostatic transducer that exhibits a strong unloaded resonance. Challenging features of this type of transducer include the presence of multiple fixed points (some of which are unstable ...
Ivan Ryger   +6 more
doaj   +1 more source

Elements of future snowpack modeling – Part 1: A physical instability arising from the nonlinear coupling of transport and phase changes [PDF]

open access: yesThe Cryosphere, 2022
The incorporation of vapor transport has become a key demand for snowpack modeling in which accompanied phase changes give rise to a new, nonlinear coupling in the heat and mass equations.
K. Schürholt   +3 more
doaj   +1 more source

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