Search Results - "Callafon, Raymond A."

Algebraic Approach to PMU Placement for Minimum Variance Linear State Estimation in Power Networks by Mishra, Aditya, de Callafon, Raymond A.

“…Phasor Measurement Units (PMUs) are used to measure voltages and currents in a power network. Optimal PMU placement in a given network is an important problem…”
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Noniterative tensor network‐based algorithm for Volterra system identification by Hu, Yangsheng, Tan, Li, Callafon, Raymond A.

“…Volterra model serves as one of the powerful alternatives to approximate nonlinear dynamics on the basis of input/output observations. The kernel…”
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Dynamic Prediction of Power Storage and Delivery by Data-Based Fractional Differential Models of a Lithium Iron Phosphate Battery by Jiang, Yunfeng, Zhao, Xin, Valibeygi, Amir, de Callafon, Raymond A

“…A fractional derivative system identification approach for modeling battery dynamics is presented in this paper, where fractional derivatives are applied to…”
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Smoothed estimation of unknown inputs and states in dynamic systems with application to oceanic flow field reconstruction by Fang, Huazhen, de Callafon, Raymond A., Franks, Peter J. S.

“…Summary Forward‐backward smoothing based unknown input and state estimation for dynamic systems is studied in this paper, motivated by reconstruction of an…”
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Autonomous Demand-Side Current Scheduling of Parallel Buck Regulated Battery Modules by Jiang, Yunfeng, Shrinkle, Louis J., de Callafon, Raymond A.

“…This paper presents the algorithms, hardware overview and testing results for controlling discharge currents from mixed battery modules placed in a parallel…”
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Modeling of battery dynamics and hysteresis for power delivery prediction and SOC estimation by Zhao, Xin, de Callafon, Raymond A.

“…•A combination of data-based models for modeling battery power dynamics is proposed.•The Takacs hysteresis model is used to describe major and minor hysteresis…”
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Tensor Network-Based MIMO Volterra Model for Lithium-Ion Batteries by Hu, Yangsheng, de Callafon, Raymond A., Tian, Ning, Fang, Huazhen

“…Accurate battery modeling is fundamental for the battery management system to function well and extract the full potential from a battery without violating…”
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Data-based fractional differential models for non-linear dynamic modeling of a lithium-ion battery by Jiang, Yunfeng, Xia, Bing, Zhao, Xin, Nguyen, Truong, Mi, Chris, de Callafon, Raymond A.

“…This paper presents a battery model with non-integer order derivatives for modeling the dynamics of a lithium-ion battery over a large operating range. The…”
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Spectrum-Based Optimal Filtering for Short-Term Phasor Data Prediction by Konakalla, Sai Akhil Reddy, de Callafon, Raymond A.

“…This article describes a phasor data prediction and recovery algorithm that can be used to optimally extrapolate invalid or missing phasor data measurements…”
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Subspace identification with eigenvalue constraints by Miller, Daniel N., de Callafon, Raymond A.

“…Standard subspace methods for the identification of discrete-time, linear, time-invariant systems are transformed into generalized convex optimization problems…”
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On the asymptotic stability of minimum-variance unbiased input and state estimation by Fang, Huazhen, de Callafon, Raymond A.

“…In this note, we investigate the asymptotic stability of the filter for minimum-variance unbiased input and state estimation developed by Gillijns and De Moor…”
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Simultaneous input and state estimation for nonlinear systems with applications to flow field estimation by Fang, Huazhen, de Callafon, Raymond A., Cortés, Jorge

“…This paper studies the problem of simultaneous input and state estimation (SISE) for nonlinear dynamical systems with and without direct input–output…”
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Microgrid Dynamic Modeling and Islanding Control With Synchrophasor Data by Konakalla, Sai Akhil Reddy, Valibeygi, Amir, de Callafon, Raymond A.

“…This paper illustrates the application of synchrophasor data to formulate reduced order dynamic models and use these models to design control algorithms that…”
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Improved adaptive state-of-charge estimation for batteries using a multi-model approach by Fang, Huazhen, Zhao, Xin, Wang, Yebin, Sahinoglu, Zafer, Wada, Toshihiro, Hara, Satoshi, de Callafon, Raymond A.

“…Adaptive estimation of the state-of-charge (SoC) for batteries is increasingly appealing, thanks to its ability to accommodate uncertain or time-varying model…”
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Robust Estimation and Adaptive Controller Tuning for Variance Minimization in Servo Systems by Raymond A. de CALLAFON, Charles E. KINNEY

“…For most servo systems, servo performance is quantified by the variance of a system dependent or user defined Servo Performance Signal (SPS). The smaller the…”
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Modeling and Control of a Dual Stage Actuator Hard Disk Drive by Uwe BOETTCHER, Raymond A. DE CALLAFON, Frank E. TALKE

“…A data-based approach is presented for modeling and controller design of a dual-stage servo actuator in a hard disk drive. The servo actuator in this hard disk…”
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Optimal switchable load sizing and scheduling for standalone renewable energy systems by Habib, Abdulelah H., Disfani, Vahid R., Kleissl, Jan, de Callafon, Raymond A.

“…•Loads are sized for planning at off-grid PV sites.•A finite number of discrete static (on or off) electric loads is sized.•The optimization maximizes the…”
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Evaluating Track-Following Servo Performance of High-Density Hard Disk Drives Using Patterned Media by Younghee Han, de Callafon, R.A.

“…In recent years, track densities of magnetic hard disks have continued to grow. A promising approach to continuing the trend to ultrahigh density is using…”
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Hammerstein system identification using nuclear norm minimization by Han, Younghee, de Callafon, Raymond A.

“…This paper presents a new method for the identification of Hammerstein systems. The parameter estimation problem is formulated as a rank minimization problem…”
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Near Contact Thermal Flying Height Control in Hard Disk Drives by Matthes, Liane M., Knigge, Bernhard E., de Callafon, Raymond A., Talke, Frank E.

“…A modeling and optimization approach is proposed and implemented for minimizing variations in flying height of thermal flying height control (TFC) sliders. The…”
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