نتایج جستجو برای: frequency response function

تعداد نتایج: 2450971  

Journal: :Applied sciences 2021

One of the factors that influence dynamic characteristics machining systems is cutting tool. Cutting tools are very diverse, and receptance coupling substructure analysis (RCSA) essential for analyzing each For RCSA, a full matrix equipment essential. In this study, rotational degree-of-freedom was estimated analyzed using translational receptance. Displacement/moment according to distance resp...

2000
V. Lampaert J. Swevers F. Al-Bender

This paper discusses the impact of nonlinear friction on frequency response function (FRF) measurements of mechanical systems with nonlinear friction. Having an idea of the level of nonlinear distortion is valuable information for robust linear control design: it allows to estimate the level of accuracy of a linear approximation of the system under consideration. The impact of nonlinear distort...

Journal: :Automatica 2015
Rik Pintelon Ebrahim Louarroudi John Lataire

The time-variant frequency response function (TV-FRF) uniquely characterizes the dynamic behaviour of a linear timevariant (LTV) system. This paper proposes a method for estimating nonparametrically the dynamic part of the TV-FRF from known input, noisy output observations. The arbitrary time-variation of the TV-FRF is modelled by Legendre polynomials. In opposition to existing solutions, the p...

2007
Manuel Duarte Ortigueira

ABSTRACT In this paper, the classic Levy identification method is reviewed and reformulated using a complex representation. This new formulation is able to solve the well known bias of the classic method at low frequencies. The formulation is generic, addressing both integer order and fractional order transfer functions. A new algorithm based on a stacked matrix and its pseudo-inverse is propos...

Journal: :CoRR 2017
Jeremy Stoddard Georgios Birpoutsoukis

Kernel-based modeling of dynamic systems has garnered a significant amount of attention in the system identification literature since its introduction to the field in [7]. While the method was originally applied to linear impulse response estimation in the time domain, the concepts have since been extended to the frequency domain for estimation of frequency response functions (FRFs) [6], as wel...

Journal: :JSME international journal. Ser. 3, Vibration, control engineering, engineering for industry 1989

2006
Xing-Jian Jing Stephen A. Billings

Analysis of nonlinear systems has been studied extensively. Based on some recently developed results, a new systematic approach to the analysis of nonlinear Volterra systems in the frequency domain is proposed in this paper, which provides a novel insight into the frequency domain analysis and design of nonlinear systems subject to a general input instead of only specific harmonic inputs using ...

Journal: :Automatica 2006
Johan Schoukens Yves Rolain Rik Pintelon

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