Mechanical systems and signal processing the experiments are presented only for radial clearance of 45 mm. Mechanical systems and signal processing 90 2017 141153. Bewley mechanical systems and signal processing where u is the defection of the beam, e is the elastic modulus, i is the area moment of inertia, r. Mechanical systems and signal processing 26 2012 128140 129 in which f r. The application of this approach is limited to collision of multibody systems or contacts with perfectly frictionless surfaces. Mechanical systems and signal processing 99 2018 567585 as such, this study has two objectives. Mssp papers are expected to make a demonstrable original contribution to engineering knowledge, which should be significant in terms of advancement over established methods. Mechanical systems and signal processing 115 2019 2237 215 the recent achievements of dlbased mhms and discusses some potential trends of deep learning in machine health. Mechanical systems and signal processing 3 for a complete mathematical description of the induction machine besides voltage equations, it. Bewley, excitation design for damage detection using iterative adjointbased. Mechanical systems and signal processing please cite this article as. The equality holds if and only if the components are stationary.
Early efforts address this issue by approximating the time lag as a constant time delay and including compensation in the system 5. Mechanical systems and signal processing 36 20 604617. Mechanical systems and signal processing 48 2014 368387. Mechanical systems and signal processing 80 2016 206223. Request pdf mechanical systems and signal processing this paper deals with the dynamic response of pumpturbine impellers. Mechanical systems and signal processing 75 2016 589606 under harmonic excitation, hydraulic bushings exhibit signi. Mechanical systems and signal processing 25 2011 266284 detecting the onset of bearing failure, identifying the circumferential location of the defect on the race at very early stages of degradation, and the diagnostic potential of the measured ae signal by enveloping and using the ks statistic. Mechanical systems and signal processing 85 2017 468486 and mode shapes, using system identification techniques such as stochastic subspace identification 11, frequency domain decomposition 12, blind source separation, bayesian operational modal. The model development is very general, so it could also be extended to the.
Mechanical systems and signal processing 26 2012 128140 129. Articles in press latest issue article collections all issues submit your article. Mechanical systems and signal processing volume 18. Harnemechanical systems and signal processing 117 2019 609633. Wang mechanical systems and signal processing interval bounds can be con. Many energy harvesting studies assume that the harvester is excited by an in. Mechanical systems and signal processing 28 2012 319 the behavior of bridges under traf. Mechanical systems and signal processing 5051 2015 1126 a costeffective alternative to investigate parametric studies of structural damage due to the cost and safety implications associated with fullscale destructive testing 1. Mechanical systems and signal processing 5455 2015 336356. Antoni mechanical systems and signal processing 23 2009 9871036 densities that characterise cyclostationary signals in the time, the frequency and the cyclic domains. The difference between measurable outputs of the undamaged and damaged systems then simply becomes a state in this augmented system which may be then maximized by maximizing a related and easily developed cost function.
Unfortunately, due to experimental constraints, the majority of system identification methods that have been developed cannot be used with micronanosystems, as a lockin amplifier is used to acquire the typically small and noisy response of. Bistable systems also were employed in electromagnetic generators 17,18. The resulted intervalvalued probability density functions rigorously bound the realvalued ones computed from the classical path integral method. In practice, some vibration isolation paths are inherently nonlinear, though they might coexist with parallel linear paths 9. Under harmonic excitation, hydraulic bushings exhibit signi. An innovative modular device and wireless control system enabling thermal and pressure sensors using fpga on realtime fault diagnostics of steam turbine functional deterioration s. Mechanical systems and signal processing 75 2016 589606. Early efforts address this issue by approximating the time lag as a constant time delay and. Main mechanical systems and signal processing volume 18. One of the most important aspects in signal processing is to extract and present useful information from a signal, usually as a function of time, from physical or mechanical systems. Mechanical systems and signal processing vol 140, june 2020. Mechanical systems and signal processing journal elsevier.
Mechanical systems and signal processing 48 2014 260273 instability in the system. Mechanical systems and signal processing 2 2019 1227 123. Amplitudemodulated am and frequencymodulated fm sig. Antoni mechanical systems and signal processing 23 2009 9871036 989. By formulating an adjoint version of the optimization problem, the. Mechanical systems and signal processing 23 2009 170194 171 article in press and nonlinear modal analysis, nonlinear model reduction and the study of localization phenomena are then discussed in. Once localized faults develop on the surface of any of these components, the strikes of rollers on the fault surfaces excite the resonant frequencies of structures between the bearing and the transducers, triggering the.
Mechanical systems and signal processing 82 2017 260278 531 incidents have been reported every year 1. This course provides a solid theoretical foundation for the analysis and processing of experimental data, and realtime experimental control methods. Mechanical systems and signal processing 5253 2015 559576 561. In order to study the nonlinear dynamic behaviors of a hydroturbine governing system in the process of sudden load increase transient, we establish a novel nonlinear dynamic model of the hydro. Mechanical systems and signal processing vol 144, in. Mechanical systems and signal processing 85 2017 468486 and mode shapes, using system identification techniques such as stochastic subspace identification 11, frequency domain decomposition 12, blind source separation, bayesian operational modal analysis oma 1420, etc. Mechanical systems and signal processing 25 2011 266284 detecting the onset of bearing failure, identifying the circumferential location of the defect on the race at very early stages of degradation, and the diagnostic potential of the measured ae. Harnemechanical systems and signal processing 117 2019 609633 the porous and core bulk metamaterial layers may be similar to a tmd for metamaterial deformation that is due to trans. Mechanical systems and signal processing 5657 2015 92108 the hydraulic bushing design 1,2,1227 is somewhat similar to hydraulic engine mounts 2833, though it significantly differs from conventional hydraulic shock absorbers 34,35. Mechanical systems and signal processing 23 2009 170194. The emphasis is on practical problems with laboratory exercises. Mechanical systems and signal processing 28 2012 319.
Mechanical systems and signal processing mssp is an interdisciplinary journal in mechanical, aerospace and civil engineering with the purpose of reporting scientific advancements of the highest quality arising from new techniques in sensing, instrumentation, signal processing, modelling and control of dynamic systems. Mechanical systems and signal processing vol 9, may 2020. Zapomel and others published mechanical systems and signal processing find, read and cite all the research you need on researchgate. Mechanical systems and signal processing 5051 2015 1126. Mechanical systems and signal processing vol 102, pages. A pumpturbine impeller is a complex structure attached to a rotor. Mechanical systems and signal processing download booksc. Among the annualized impacts of these incidents are 19 fatalities, cost of. In progress june 2020 this issue is in progress but contains articles that are final and fully citable. Mechanical systems and signal processing 35 20 324344 then developed a two degree of freedom model to describe a laboratory experiment. Mechanical systems and signal processing 103 2018 368380 369. Mechanical systems and signal processing vol 9, may.
Mechanical systems and signal processing 82 2017 260278. Theoretical analysis of the static properties the geometry of the force sensing element in this study is a cross beam that is identical in shape to the cantilever beams. Mechanical systems and signal processing vol 141, july. Topics covered include spectral analysis, filter design, system identification, and simulation in continuous and discretetime domains. Mechanical systems and signal processing 48 2014 260273. Introduction to timedomain digital signal processing. Mechanical systems and signal processing 80 2016 206223 direction with no frictions in the contact e. The magnetic force adds cubic stiffness nonlinearity and makes the oscillator a duf. Singh mechanical systems and signal processing 48 2014 368387. Mechanical systems and signal processing 90 2017 317333 contents lists available at sciencedirect mechanical systems and signal processing.
Rhoads mechanical systems and signal processing 84 2017 241264 electromagnetically transduced microresonator. Wavebased motion and slewing control of a doubleappendage, flexible system with ungrounded actuator through development of direct actuator force control. Mechanical systems and signal processing 8 2020 106551 through a dynamic event while updating the model at the timescale of less than 10 ms. Mechanical systems and signal processing 84 2017 241264 7. The time series corresponding to inphase and outofphase normal mode motions of the linear system 3 are depicted in fig. Analogous mechanical system models of the system shown in fig. Mechanical systems and signal processing 5455 2015 336356 wang et al. Mechanical systems and signal processing 23 2009 15541572 14,15, it is critical to have a proper feature which adapts for different datasets. Mechanical systems and signal processing vol 140, june.
Mechanical systems and signal processing request pdf. Pioneering works in cyclostationarity date back tothe early sixties, but it is trulysince the eighties that cyclostationarity has become a subject of active research. Duan and singh 9 have approached the judder problem using a sourcepathreceiver network concept where the brake rotor, suspension system, and steering. Even though an estimation of their interfacial properties is critical to dynamic design and durability studies, only a. Mechanical systems and signal processing 35 20 324344. Mechanical systems and signal processing 24 2010 28442854 method to determine the response to harmonic excitations and in each con. Mechanical systems and signal processing 103 2018 368380 369 where w is a binary matrix with w ij 0. Signal processing sparse representation orthogonal matching pursuit vehiclebased inspection inertial sensing abstract collecting vibration data from revenue service trains could be a lowcost way to more frequently monitor railroad tracks, yet operational variability makes robust analysis a.
Volume 144 in progress october 2020 this issue is in progress but contains articles that are final and fully citable. Further, whenpursuing newconcepts for design, computational models are. The porous and core bulk metamaterial layers may be similar to a tmd for metamaterial deformation that is due to transverse updown motion of the core, as schematically shown in fig. Bewley mechanical systems and signal processing where u is the defection of the beam, e is the elastic modulus, i is the area moment of inertia, r is the density per unit.
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