Kurum Yazarı "Akçay, Hüseyin" Scopus İndeksli Yayınlar Koleksiyonu İçin Listeleme
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Frequency domain subspace-based identification of discrete-time singular power spectra from uniformly spaced measurements
Akçay, Hüseyin (IEEE Computer Soc, 2012)In this paper, we propose a subspace algorithm for the identification of linear-time-invariant discrete-time systems with more outputs than inputs from measured power spectrum data. The proposed identification algorithm ... -
A frequency-domain iterative identification algorithm using general orthonormal basis functions
Akçay, Hüseyin; Heuberger, P (Pergamon-Elsevier Science LTD, 2001)In this paper, a two-step frequency-domain identification algorithm is proposed, in which the identified model is parameterized in terms of general orthonormal basis functions. Furthermore an update scheme is presented, ... -
General orthonormal bases for robust identification in H?
Akçay, Hüseyin (2002)In this paper, the problem of system identification in H? with general orthonormal basis functions is investigated. A two-stage algorithm is shown to be robust, provided that the number of basis elements as a function of ... -
General orthonormal bases or robust identification in H-infinity
Akçay, Hüseyin (Siam Publications, 2001)In this paper, the problem of system identification in H-infinity with general orthonormal basis functions is investigated. A two-stage algorithm is show to be robust, provided that the umber of basis elements as a function ... -
A generalization of a standard inequality for Hardy space H-1
Akçay, Hüseyin (Pergamon-Elsevier Science LTD, 2001)In this paper, we generalize a standard inequality for the Hardy space H-1 to involve a family of rational basis systems with cyclically repeated poles. This inequality is used to derive an inequality that gives information ... -
Identification of acoustic spectra for fault detection in induction motors
Akçay, Hüseyin; Germen, Emin (IEEE, 2013)In this paper, we study fault detection problem for induction motors by using a recently developed cross-power spectral density estimation algorithm from sound measurements. In a test rig, from multiple experiments the ... -
Identification of continuous-time power spectra by generalized Fourier series
Akçay, Hüseyin; Türkay, Semiha (Chinese Automatic Control Soc, 2007)In this paper, we present a generalized Fourier series based algorithm for the identification of continuous-time, linear-time invariant systems from power spectrum measurements. The algorithm is strongly consistent and it ... -
Identification of power spectra by reweighted and regularized nuclear norm minimization
Akçay, Hüseyin; Türkay, Semiha (IEEE, 2015)In this paper, we study model order choice in subspace identification algorithms using uniformly spaced spectrum measurements. In these algorithms, model order is determined by singular-value decomposition of a structured ... -
Induction Motor Identification from Acoustic Noise Spectrum by a Covariance Subspace Algorithm
Akçay, Hüseyin; Germen, Emin; Türkay, Semiha (IEEE Computer Society, 2018)In this paper, we study identification of induction motors by using a recently developed covariance-based subspace algorithm from sound measurements. The sound data are collected by an array of five-microphones placed ... -
Influence of Tire Damping on Actively Controlled Quarter-Car Suspensions
Akçay, Hüseyin; Türkay, Semiha (Asme, 2011)In this note, a comprehensive analysis of tire damping effect on H-2-optimal, multi-objective, and robust control of quarter-car suspensions excited by random road disturbances is provided. First, H-2-optimal and convex ... -
Influence of tire damping on mixed H-2/H-infinity synthesis of half car active suspensions
Akçay, Hüseyin; Türkay, Semiha (Academic Press LTD- Elsevier Science LTD, 2009)In this paper, multi-objective control of a half-car suspension system using linear matrix inequalities is studied. It is observed that when tire damping is precisely known, road-holding quality of the suspension system ... -
Influence of tire damping on multi-objective control of quarter-car suspensions
Akçay, Hüseyin; Türkay, Semiha (2010)In this paper, multi-objective control of a quartercar suspension system subjected to random road disturbances is studied. The active suspension problem is formulated as a mixed H2/H? synthesis problem and solved using ... -
Influence of tire damping on the H2 optimally designed half-car active suspensions
Türkay, Semiha; Akçay, Hüseyin (2008)In this paper, the rms responses of the heave and pitch accelerations, the suspension travels, and the tire deflections of a half-car model excited by random road inputs are studied. The road excitation at the front wheel ... -
Influence of tire damping on the ride performance potential of quarter-car active suspensions
Türkay, Semiha; Akçay, Hüseyin (IEEE, 2008)In this paper, performance limitations are studied for a quarter-car active suspension system excited by sinusoidal or random road disturbances. It is demonstrated that the influence of tire damping on the closed-loop ... -
An insight into instrumental variable frequency-domain subspace identification
Akçay, Hüseyin (Pergamon-Elsevier Science LTD, 2010)In this paper, we study instrumental variable subspace identification of multi-input/multi-output linear-time-invariant, discrete-time systems from non-uniformly spaced frequency response measurements. A particular algorithm, ... -
Instrumental variable frequency-domain subspace identification
Akçay, Hüseyin (2010)In this paper, we study instrumental variable subspace identification of multi-input/multi-output linear-time-invariant, discrete-time systems from non-uniformly spaced frequency response measurements. A particular algorithm, ... -
Membership set identification with periodic inputs and orthonormal regressors
Akçay, Hüseyin; At, Nuray (Elsevier Science BV, 2006)In this paper, we study the central and the projection algorithms in membership-set estimation with periodic input signals and orthonormal basis functions for the special case that the number of the estimated parameters ... -
Modeling of hysteresis and power losses in transformer laminations
Akçay, Hüseyin; Ece, Dugan Gökhan (IEEE-Inst Electrical Electronics Engineers Inc, 2003)In this paper, a method for the representation of hysteresis and power losses in the laminations of power transformers is proposed. The developed model is based on data supplied from steel manufacturer and able to predict ... -
Modelling of road roughness for full-car models: a spectral factorization approach
Türkay, Semiha; Akçay, Hüseyin (IEEE, 2016)In this paper, we study modelling of road roughness for full-car models from power spectrum and coherence measurements of parallel tracks. The modelling problem is cast as a spectral factorization problem and solved via ... -
Multi-objective control design for a truck cabin
Türkay, Semiha; Akçay, Hüseyin (IFAC Secretariat, 2014)In this paper, a multi-objective control of a three-degrees-of-freedom cabin model for a commercial truck excited by random road disturbances is studied. The multi-objective control problem is formulated as a non-convex ...