Values of Frequency Response Functions
Estimation of generalised frequency response functions
... true values from the original system (15), and the reconstructed parameters of continuous time model (15) from Table 1 using (17) are shown in Table ...the frequency domain features of the underlying system ...
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Estimation of generalised frequency response functions
... true values from the original system (15), and the reconstructed parameters of continuous time model (15) from Table 1 using (17) are shown in Table ...the frequency domain features of the underlying system ...
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The parametric characteristics of frequency response functions for nonlinear systems
... output frequency response function, including how the frequency response functions are influenced by the parameters of the underlying system, and the connection to complex non-linear ...
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On the treatment of uncertainty in experimentally measured frequency response functions
... However, if one were to measure multiple FRFs simultaneously, for example, through a SIMO approach, there would exist the possibility of correlation between measured FRFs, since they are acquired as part of the same ...
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Boundary Element Model Updating Using Frequency Response Functions
... Under this circumstances the update process converges to incorrect parameter values. This is a common behavior of FRFs based model update procedures and has its origin in the existence of local minima which leads ...
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Crack detection using nonlinear output frequency response functions - an experimental study
... (c) lagre crack Figure 7. The output responses under strong excitations Tables 1, 2 and 3 give the NOFRF evaluation results for the three specimen beams. It is worth noting that all the NOFRFs in the tables have been ...
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Pilot study on the Non Invasive Detectability of Femoral Neck Fractures with Frequency Response Functions
... The FRFs of Figures 3-7 lead to the following two main conclusions: The FRFs obtained by impact testing (Figure 3 and Figure 4) do not indicate a clear change due to the frac- tured femoral neck. The shaker FRFs (Figures ...
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Analysis of multi-degree-of-freedom nonlinear systems using nonlinear output frequency response functions
... 4 Numerical Study In order to verify the analysis results in the last section, a 6-DOF oscillator was adopted, in which the fourth spring was nonlinear. As widely used in modal analysis [13], a damping characteristic was ...
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Relationships between the nonlinear output frequency response functions of multi- degree-of-freedom nonlinear systems
... 4 Numerical Study To verify the analysis results in Section 3, a damped 8-DOF oscillator was used to conduct numerical studies, in which the fourth spring was nonlinear. As widely used in modal analysis, the damping was ...
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Frequency Response of Filters
... the functions determined in pre-lab exercise ...theoretical values of the amplitude and the phase at the frequencies that were used to take readings during the ...experimental values of both ...
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Estimation of unmeasured frequency response functions
... Maia, N. M. M. IDMEC/IST, Tech. Univ. of Lisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal e-mail: [email protected] In the present work, the authors propose a new methodology for the estimation of Frequency ...
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Sensitivity study of generalised frequency response functions
... The frequency response is inherent, invariant and totally independent of the input signals, and therefore it is always desirable as a linear description of the underlying ...linear frequency ...
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Spatio-temporal generalised frequency response functions
... The frequency response of the system can then be evaluated using these transfer ...transfer functions of purely temporal systems or lumped-parameter systems are rational functions whilst the ...
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The analysis of nonlinear systems in the frequency domain using Nonlinear Output Frequency Response Functions
... the frequency domain has been ...the frequency properties of nonlinear systems, which are a new extension of the well known FRF to the nonlinear case and have been successfully used by many researchers to ...
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Analysis of Pump Storaged's Functions at Grid Frequency Control and Contigency Response
... Abstract: Frequency stability is one of the crucial indicators of electric power ...system. Frequency regulation is one of PSH's important ancillary services offered to ...of frequency regulation, ...
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Mapping from parametric characteristics to generalized frequency response functions of nonlinear systems
... system frequency characteristics by using the nth-order ...the frequency domain analysis and design of nonlinear systems based on the GFRFs, and can be regarded an important extension of the parametric ...
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Subsystem identification in structures with a human occupant based on composite frequency response functions
... Subsystem identification using measured FRFs from shaker testing. 293[r] ...
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Spatio-temporal generalised frequency response functions over bounded spatial domains
... of frequency response functions (GFRFs) has been extended to describe the characteristics of spatio-temporal dynamical systems over an unbounded spatial domain from a frequency domain point of ...
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Spatio-temporal generalised frequency response functions over unbounded spatial domains
... system frequency response we should study the (frequency) response of the underlying spatio-temporal system with respect to the above mentioned control ...and frequency approaches for ...
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Nonlinear output frequency response functions for multi-input nonlinear volterra systems
... the output frequency range can be determined by Equations (2.22), (2.23) and (2.24). The validity of this method will be verified by numerical studies in Section 3. 2.4 Evaluation of the NOFRFs for Multi-Input ...
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