Kurum Yazarı "Akçay, Hüseyin" Elektrik ve Elektronik Mühendisliği Bölümü İçin Listeleme
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Frequency domain subspace-based identification of discrete-time singular power spectra
Akçay, Hüseyin (Elsevier Science BV, 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 ... -
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-infinity
Akçay, Hüseyin (IEEE, 2002)In this paper, the problem of system identification in H-infinity 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 ... -
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 H-2 Optimally Designed Half-Car Active Suspensions
Türkay, Semiha; Akçay, Hüseyin (IEEE, 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 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 ...