Beyond-Nyquist Control

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
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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Multi-band beyond-Nyquist Disturbance Rejection on a Galvanometer Scanner System
In many laser processing applications, galvanometer scanners are integrated to a larger system that creates external disturbances to …
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Multirate Forward-model Disturbance Observer for Feedback Regulation beyond Nyquist Frequency
A fundamental challenge in digital control arises when the controlled plant is subjected to a fast disturbance dynamics but is only …
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Spectral Distribution and Implications of Feedback Regulation beyond Nyquist Frequency
A fundamental challenge in digital and sampled-data control arises when the continuous-time plant is subject to fast disturbances that …
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Multirate Forward-model Disturbance Observer for Feedback Regulation beyond Nyquist Frequency
A fundamental challenge in digital and sampleddata control arises when the controlled plant is subjected to fast disturbances with, …
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