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Control of Cutting Vibration and Machining Instability: A Time-Frequency Approach for Precision, Micro and Nano Machining
Author(s): C. Steve Suh (Author), Meng-Kun Liu (Author)
Publisher: Wiley
Publication Date: October 14, 2013
Edition: 1st
Language: English
Print length: 264 pages
ISBN-10: 1118371828
ISBN-13: 9781118371824
Book Description
Presents new developments on machine tool vibration control based on discontinuous dynamical systems
Machining instability is a topical area, and there are a wide range of publications that cover the topic. However, many of these previous studies have started by assuming that the behavior of the system can be linearised. Meanwhile, there are many recent advances in the fields of signal processing, nonlinear dynamics, and nonlinear control, all of which are relevant to the machining stability problem. This book establishes the fundamentals of cutting mechanics and machine tool dynamics in the simultaneous time-frequency domain. The new nonlinear control theory developed by the authors that facilitates simultaneous control of vibration amplitude in the time-domain and spectral response in the frequency-domain provides the foundation for the development of a controller architecture universally viable for the control of dynamic instability including bifurcation and chaos. Once parameters underlying the coupling, interaction, and evolution of different cutting states and between the tool and workpiece are established, they can then be incorporated into the architecture to create a control methodology that mitigate machining instability and enable robust, chatter-free machine tool design applicable in particular to high speed micro- and nano-machining.
Presents new developments on machine tool vibration control based on discontinuous dynamical systems
Provides a clear and concise approach to the understanding and control of machine tool and workpiece vibrations from an alternative view, contributing to an in-depth understanding of cutting dynamics and robust control of machining instability
Equips the reader with the knowledge to understand the dynamics of cutting and operation of machine-tool systems in different conditions as well as the concept of cutting instability control
Includes data examples in MATLAB coding
Editorial Reviews
From the Inside Flap
Presents new developments on machine-tool vibration control applicable to nonlinear and discontinuous dynamical systems
Cutting instability is a temporal-spectral aberration in the simultaneous time-frequency domain. This aberration is particularly prominent at high machining speeds as it is nonlinear, nonstationary, and characteristically broadband. Irrespective of cutting speed, proper mitigation of cutting requires that vibration amplitudes in the time domain and vibration spectra in the frequency domain be simultaneously suppressed.
Micro-machining is operated in a speed range that is at least one order of magnitude higher than conventional cutting operations. As cutting at higher speeds is inherently unstable, mitigating dynamic instability in micro-machining is a pressing issue in the industry.
In this book, the authors develop powerful analytical tools essential for the characterization of cutting instability, which is inherently complex and often chaotic. It also provides effective measures for instability control, system identification, and signal processing – the three components fundamental to machine-tool design. The strategy formulated in the book, along with the control and design methodologies, is novel and unique in that it deploys simultaneous vibration and frequency control in real-time to negate manufacturing instability including machine-tool chatter.
Key features:-
supports interdisciplinary engineering curricula in nonlinear dynamics, wavelet signal processing, control, engineering design, and manufacturing
integrates both basic and advanced topics from several engineering disciplines into the creation of an innovative, new control theory
incorporates nonlinear dynamics and nonlinear time-frequency control into the design of high-speed, high-precision machine-tools
From the Back Cover
Presents new developments on machine-tool vibration control applicable to nonlinear and discontinuous dynamical systems
Cutting instability is a temporal-spectral aberration in the simultaneous time-frequency domain. This aberration is particularly prominent at high machining speeds as it is nonlinear, nonstationary, and characteristically broadband. Irrespective of cutting speed, proper mitigation of cutting requires that vibration amplitudes in the time domain and vibration spectra in the frequency domain be simultaneously suppressed.
Micro-machining is operated in a speed range that is at least one order of magnitude higher than conventional cutting operations. As cutting at higher speeds is inherently unstable, mitigating dynamic instability in micro-machining is a pressing issue in the industry.
In this book, the authors develop powerful analytical tools essential for the characterization of cutting instability, which is inherently complex and often chaotic. It also provides effective measures for instability control, system identification, and signal processing – the three components fundamental to machine-tool design. The strategy formulated in the book, along with the control and design methodologies, is novel and unique in that it deploys simultaneous vibration and frequency control in real-time to negate manufacturing instability including machine-tool chatter.
Key features:-
supports interdisciplinary engineering curricula in nonlinear dynamics, wavelet signal processing, control, engineering design, and manufacturing
integrates both basic and advanced topics from several engineering disciplines into the creation of an innovative, new control theory
incorporates nonlinear dynamics and nonlinear time-frequency control into the design of high-speed, high-precision machine-tools
About the Author
Dr C. Steve Suh, Director, Institute for Innovation and Design in Engineering, Department of Mechanical Engineering, Texas A&M University, USA. Dr Suh obtained his PhD in Mechanical Engineering from Texas A&M University in 1997. He has co-authored numerous journals articles and a book, and was Guest Editor of the Journal of Vibration and Control in 2007. Dr Suh’s research interests include Nonlinear control theory; Laser ultrasonic thermometry; Characterization and control of dynamic manufacturing instability; Engineering design theory; MEMS and NEMS fabrication; High-performance 3D microelectronic packaging; Dynamic system diagnostics and prognostics; Wave propagation; Thermo-Elasto-Viscoplastodynamics.
Dr Meng-Kun Liu, Lecturer, Department of Mechanical Engineering, Texas A&M University, USA. Dr.Liu obtained his PhD in Mechanical Engineering from Texas A&M University in 2012.He has two-years senior design instructor experience in system engineering, project management and design optimization, and four years hands-on experience in industrial projects with focuses on design innovation. He was the recipient of the 2012 Departmental Graduate Student Teaching Award, and has co-authored numerous journal articles and conference proceedings. This is his first book.
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