Search Results - "de Callafon, R. A."

Recursive filter estimation for feedforward noise cancellation with acoustic coupling by Zeng, J., de Callafon, R.A.

“…The basic principle of feedforward noise cancellation for broadband active noise reduction is based on the availability of a reliable measurement of the noise…”
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General Realization Algorithm for Modal Identification of Linear Dynamic Systems by De Callafon, R. A, Moaveni, B, Conte, J. P, He, X, Udd, E

“…The general realization algorithm (GRA) is developed to identify modal parameters of linear multi-degree-of-freedom dynamic systems subjected to measured…”
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Active noise control in a forced-air cooling system by de Callafon, R.A., Zeng, J., Kinney, C.E.

“…This paper discusses the design methodology for the active noise control of sound disturbances in a forced-air cooling system. The active sound cancellation…”
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Optimal periodic disturbance reduction for active noise cancelation by Kinney, C.E., de Callafon, R.A., Dunens, E., Bargerhuff, R., Bash, C.E.

“…The design of an optimal internal model-based (IMB) controller by extending standard discrete time optimal control theory for IMB controllers is described. The…”
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The internal model principle for periodic disturbances with rapidly time-varying frequencies by Kinney, C. E., de Callafon, R. A.

“…In this paper, we study the limitations of scheduling an internal model to reject disturbances with a time‐varying frequency. Hence, any adaptive method that…”
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Modeling and Low-Order Control of Hard Disk Drives With Considerations for Product Variability by Graham, M.R., de Callafon, R.A., Shrinkle, L.

“…To maximize bandwidth for a hard disk servo system in the presence of modeling uncertainty, a tradeoff between performance and controller complexity is…”
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Frequency-domain identification of aircraft structural modes from short-duration flight tests by Vayssettes, J., Mercère, G., Vacher, P., De Callafon, R.A.

“…This article presents identification algorithms dedicated to the modal analysis of civil aircraft structures during in-flight flutter tests. This particular…”
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Robust dynamic modeling and control of dual-stage actuators by de Callafon, R.A., Nagamune, R., Horowitz, R.

“…In a hard disk drive with a dual-stage actuator the standard rotary actuation of the voice coil motor (VCM) is combined with an additional micro- or…”
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Dynamic Modeling and Control of a Piezo-Electric Dual-Stage Tape Servo Actuator by Boettcher, U., Raeymaekers, B., de Callafon, R.A., Talke, F.E.

“…We present a data-based approach for modeling and controller design of a dual-stage tape servo actuator. Our method uses step response measurements and a…”
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An iterative learning design for repeatable runout cancellation in disk drives by Graham, M.R., de Callafon, R.A.

“…In this paper, we consider the iterative learning control (ILC) framework to design a reference signal that directly cancels periodic disturbances in a…”
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Control relevant estimation of plant and disturbance dynamics by Zeng, J., de Callafon, R.A.

“…Estimating models for both plant and disturbance dynamics is important in control design applications that focus on disturbance rejection. Several methods for…”
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Characterization of lateral tape motion and disturbances in the servo position error signal of a linear tape drive by Jose, Jan, Taylor, Ryan J., de Callafon, Raymond A., Talke, Frank E.

“…Lateral tape displacement in a tape drive is believed to be one of the critical limiting factors in achieving high track density in tape storage media. For…”
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Comparison and design of servo controllers for dual-stage actuators in hard disk drives by Rotunno, M., De Callafon, R.A., Talke, F.E.

“…A systematic design procedure is presented that can be used to construct servo controllers for dual-stage actuation in a hard disk drive. The systematic…”
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Multivariable feedback relevant system identification of a wafer stepper system by de Callafon, R.A., Van den Hof, P.M.J.

“…This paper discusses the approximation and feedback relevant parametric identification of a positioning mechanism present in a wafer stepper. The positioning…”
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Modeling product variations in hard disk drive micro-actuator suspensions by ROTUNNO, M, OBOE, R, DE CALLAFON, R. A

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Reduction of flow-induced suspension vibrations in a hard disk drive by dual-stage suspension control by Teerhuis, A.P., Cools, S.J.M., De Callafon, R.A.

“…A control design methodology is proposed to control an active dual-stage suspension for the reduction of flow-induced vibrations (windage) in a hard disk…”
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Feedforward estimation for active noise cancellation in the presence of acoustic coupling by Jie Zeng, de Callafon, R.A.

“…This paper presents a new methodology for feedforward filter design in active noise cancellation in the presence of acoustic coupling. This is done via a…”
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17th ASME Conference on Information Storage and Processing Systems at Santa Clara University, Santa Clara, CA, USA by de Callafon, R. A., Talke, F. E.

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Reference Signal Shaping for Closed-Loop Systems With Application to Seeking in Hard Disk Drives by Boettcher, U., Fetzer, D., Li, H., de Callafon, R. A., Talke, F. E.

“…An input shaping algorithm based on convex optimization techniques is presented for the design of reference and feedforward signals in a closed-loop…”
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Reference signal shaping for time-optimal track-seeking in hard disk drives by Boettcher, U, Fetzer, D, Li, H, Amemiya, K, de Callafon, R A, Talke, F E

“…An algorithm for computing time-optimal reference signals for track seeking in hard disk drives is presented. A discrete-time model of the servo loop in a hard…”
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