Yazar "Akçay, Hüseyin" için Bildiri Koleksiyonu listeleme
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Active suspension design based on linear-matrix inequalities and fixed-order controllers
Türkay, Semiha; Akçay, Hüseyin (2011)In this paper, influence of tire damping on multi-objective control of quarter-car suspensions excited by random road disturbances is studied. The active suspension design problem is first formulated as a mixed H 2/? ... -
Active suspension design for an idealized truck cabin
Akçay, Hüseyin; Türkay, Semiha (Institute of Electrical and Electronics Engineers Inc., 2014)In this paper, a prototype three-degree-of-freedom cabin model for a commercial truck is derived to study ride motions of the cabin under random road excitations. An active suspension system is designed using the ... -
Central and projection algorithms in identification with periodic set membership inputs
At, Nuray; Akçay, Hüseyin (IEEE, 2004)In this paper, we study the central and the projection algorithms in set membership identification with periodic input signals for the case that the number of the estimated parameters equals the input period. First, we ... -
Central and projection algorithms in set membership identification with periodic inputs
At, Nuray; Akçay, Hüseyin (2004)In this paper, we study the central and the projection algorithms in set membership identification with periodic input signals for the case that the number of the estimated parameters equals the input period. First, we ... -
Cramer-Rao Bounds for Road Profile Estimation
Akçay, Hüseyin; Türkay, Semiha (IEEE, 2017)In this paper, we study estimator accuracy in road profile identification. We derive a Cramer-Rao lower bound on the variances of all unbiased waviness parameter estimators for an ISO 8608 road profile, widely used in ... -
Effect of tire damping on the ride performance potential of active suspension systems
Türkay, Semiha; Akçay, Hüseyin (IEEE, 2007)In this paper, constraints on the transfer functions from the road disturbance to the vertical acceleration, the suspension travel, and the tire deflection are derived for a quarter-car active suspension system using the ... -
Estimation of cross-power and auto-power spectral densities in frequency domain by subspace methods
Akçay, Hüseyin (IEEE, 2012)In this paper, frequency-domain subspace-based algorithms are proposed to estimate discrete-time cross-power spectral density (cross-PSD) and auto-power spectral density (auto-PSD) matrices of vector auto-regressive ... -
Fixed-Order Controller Design for a High Speed Railway Vehicle
Turkey, Semiha; Leblebici, Aslı S.; Akçay, Hüseyin (Amer Soc Mechanical Engineers, 2017)Advanced active suspension systems has attracted considerable attention in modern railway vehicle designs in recent years. The purpose of the suspension is to attenuate the vehicle vibrations due to various rail excitations. ... -
Frequency domain subspace identification of discrete-time singular power spectra
Akçay, Hüseyin (2011)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 power spectra from nonuniformly spaced measurements
Akçay, Hüseyin; Türkay, Semiha (IEEE, 2004)In this paper, we present a new subspace-based algorithm for the identification of multi-input/multi-output, square, discrete-time, linear-time invariant systems from nonuniformly spaced power spectrum measurements. The ... -
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 ... -
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 ... -
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 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 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 ...