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Higher-order sinusoidal input describing functions for the analysis of non-linear systems with harmonic responses
For high-precision motion systems, modelling and control design specifically oriented at friction effects is instrumental. The sinusoidal input describing function theory represents an approximativeExpand
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Frequency domain based nonlinear feed forward control design for friction compensation
A frequency domain based method for controller design for nonlinear systems is presented. In a case study, this method is applied to optimally design a feed forward friction compensator for anExpand
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Experimental characterization of the stick/sliding transition in a precision mechanical system using the third order sinusoidal input describing function
In this paper a new, non-parametric frequency domain based measurement technique is introduced that enables capturing the stick to gross sliding transition of a mechanical system with dry friction.Expand
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Frequency domain‐based nonlinearity detection and compensation in Lur'e systems
SUMMARY Nonlinearities often lead to performance degradation in controlled dynamical systems. This paper provides a new, frequency domain-based method, for detection and optimal compensation ofExpand
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A comparative overview of frequency domain methods for nonlinear systems
The widespread acceptance of frequency domain techniques for linear and time invariant systems has been an impetus for the extension of these methodologies toward nonlinear systems. However,Expand
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Measuring the higher order sinusoidal input describing functions of a non-linear plant operating in feedback
In this paper two measuring techniques are presented for measuring the higher order sinusoidal input describing functions (HOSIDF) of a non-linear plant operating in feedback. The HOSIDF relate theExpand
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Wavelets for feature detection : theoretical background
TLDR
Wavelet theory is a relatively new tool for signal analysis. Expand
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Real-time wavelet detection of crashes in limit cycles of non-stationary fusion plasmas
TLDR
The high performance mode(H-mode)is one of the baseline plasma scenarios for the experimental fusion reactor ITER. Expand
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Non-parametric identification of higher order sinusoidal output describing functions
In this paper the concept of the Higher Order Sinusoidal Output Describing Functions (HOSODF) is presented. HOSODF can be defined for the class of causal, stable, time invariant non-linear systemsExpand
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Systematic design and simulation of a tearing mode suppression feedback control system for the TEXTOR tokamak
Suppression of tearing modes is essential for the operation of tokamaks. This paper describes the design and simulation of a tearing mode suppression feedback control system for the TEXTOR tokamak.Expand
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