Resetting Velocity Feedback: Reset Control for Active Damping

Master thesis (2021)

Authors

M.A. Mohan Mechanical Engineering

Contributors

S. Hassan HosseinNia Mechatronic Systems Design - Mechanical, Maritime and Materials Engineering (supervisor 1)
M.B. Kaczmarek Mechatronic Systems Design - Mechanical, Maritime and Materials Engineering (supervisor 1)
A. Hunt Micro and Nano Engineering - Mechanical, Maritime and Materials Engineering (supervisor 2)
M. Jafarian Team Matin Jafarian - Mechanical, Maritime and Materials Engineering (supervisor 2)
Faculty
Mechanical Engineering
Copyright: © 2021 Mathew Mohan
Reset Control Describing Function Active damping Transient response Transient Damping Nonlinear Bandpass Filter Resetting Velocity Feedback
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Published Date

23-07-2021

Language

English

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Faculty

Mechanical Engineering

Abstract

As the age of digitization evolves rapidly, there is an ever-increasing demand for improving precision and decreasing production times for industrial automation in general, and semiconductor manufacturing in particular. As these complex machines incorporate flexure-based elements to overcome friction and backlash, structural vibrations pose a new challenge. Hence, the need for controlling and quickly damping these vibrations are paramount. In this thesis, a novel reset-based bandpass filter that employs velocity feedback to achieve finite-time vibration suppression for damped systems is introduced. The development of this filter stems from an energy based mechanistic approach, providing a clear understanding of the underlying mechanism for the improved transient response, which also motivates the use of reset. Systematic tuning rules based on describing functions are also developed to enable design in the frequency-domain, thereby increasing its relevance for industries. Finally, the effectiveness of the Resetting Velocity Feedback framework for improved transient damping is demonstrated experimentally on a single degree-of-freedom flexure stage. The results are compared to a linear bandpass filter and validates the advantages of reset control for achieving better transient damping compared to linear control.