Article-Journal

Robotic Target Following with Slow and Delayed Visual Feedback
This paper provides a control method for autonomously tracking moving targets with slow and delayed visual feedback. Such capabilities …
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Robotic Target Following with Slow and Delayed Visual Feedback
A Spectral Analysis and Its Implications of Feedback Regulation beyond Nyquist Frequency
A fundamental challenge in sampled-data control arises when a continuous-time plant is subject to disturbances that possess significant …
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A Spectral Analysis and Its Implications of Feedback Regulation beyond Nyquist Frequency
Transmission of Signal Nonsmoothness and Transient Improvement in Add-On Servo Control
Plug-in or add-on control is integral for high- performance control in modern precision systems. Despite the capability of greatly …
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Transmission of Signal Nonsmoothness and Transient Improvement in Add-On Servo Control
A Multirate Fractional-Order Repetitive Control for Laser-Aided Additive Manufacturing
This paper discusses fractional-order repetitive control (RC) to advance the quality of periodic energy deposition in laser-based …
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Discrete-Time Nonlinear Damping Backstepping Control With Observers for Rejection of Low and High Frequency Disturbances
A discrete-time backstepping control algorithm is proposed for reference tracking of sys- tems affected by both broadband disturbances …
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Rejecting Fast Narrow-Band Disturbances With Slow Sensor Feedback for Quality Beam Steering in Selective Laser Sintering
A fundamental problem arises in feedback control when the system is subject to fast disturbances but can only get slowly updated sensor …
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Adaptive Loop Shaping for Wideband Disturbances Attenuation in Precision Information Storage Systems
Modern hard disk drive (HDD) systems are subjected to various external disturbances. One particular category, defined as wide-band …
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Disturbance Observer Based Pitch Control of Wind Turbines for Enhanced Speed Regulation
Time-varying unknown wind disturbances influence significantly the dynamics of wind turbines. In this research, we formulate a …
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A Robust Optimal Design for Strictly Positive Realness in Recursive Parameter Adaptation
This paper provides an optimization-based approach to assure the strict positive real (SPR) condition in a set of recursive parameter …
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A Tutorial on Loop-shaping Control Methodologies for Precision Positioning Systems
Many servo systems require micro/nano level positioning accuracy. This requirement sets a number of challenges from the viewpoint of …
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