"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 frequency components beyond the Nyquist frequency of the feedback sensor. Such intrinsic difficulties create …

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 feedback. The problem is particularly challenging when the disturbances have frequency components near or beyond …

Multi-band beyond-Nyquist Disturbance Rejection on a Galvanometer Scanner System

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 equipped with a relatively slow sensor. Such intrinsic difficulties are, however, commonly encountered in many novel …

Spectral Distribution and Implications of Feedback Regulation beyond Nyquist Frequency

Multirate Forward-model Disturbance Observer for Feedback Regulation beyond Nyquist Frequency