English
Related papers

Related papers: Scaled Relative Graphs for Nonmonotone Operators w…

200 papers

We introduce a generalization of the scaled relative graph (SRG) to pairs of operators, enabling the visualization of their relative incremental properties. This novel SRG framework provides the geometric counterpart for the study of…

Optimization and Control · Mathematics 2025-11-26 Jan Quan , Alexander Bodard , Konstantinos Oikonomidis , Panagiotis Patrinos

The Scaled Relative Graph (SRG) is a geometric tool that maps the action of a multi-valued nonlinear operator onto the 2D plane, used to analyze the convergence of a wide range of iterative methods. As the SRG includes the spectrum for…

Numerical Analysis · Mathematics 2024-12-05 Xinmeng Huang , Ernest K. Ryu , Wotao Yin

The scaled relative graph (SRG) of an operator is a subset of the complex plane. It captures several salient features of an operator, such as contractiveness, and can be used to reveal the geometric nature of many of the inequality based…

Optimization and Control · Mathematics 2021-08-05 Richard Pates

Scaled Relative Graphs (SRGs) provide a novel graphical frequency-domain method for the analysis of nonlinear systems. There have been recent efforts to generalize SRG analysis to Multiple-Input Multiple-Output (MIMO) systems. However,…

Systems and Control · Electrical Eng. & Systems 2026-04-20 Julius P. J. Krebbekx , Roland Tóth , Amritam Das

The Scaled Relative Graph (SRG) is a generalization of the Nyquist diagram that may be plotted for nonlinear operators, and allows nonlinear robustness margins to be defined graphically. This abstract explores techniques for shaping the SRG…

Systems and Control · Electrical Eng. & Systems 2022-08-10 Thomas Chaffey , Fulvio Forni , Rodolphe Sepulchre

Many iterative methods in applied mathematics can be thought of as fixed-point iterations, and such algorithms are usually analyzed analytically, with inequalities. In this paper, we present a geometric approach to analyzing contractive and…

Optimization and Control · Mathematics 2021-06-17 Ernest K. Ryu , Robert Hannah , Wotao Yin

The Scaled Relative Graph (SRG) is a promising tool for stability and robustness analysis of multi-input multi-output systems. In this paper, we provide tools for exact and computable constructions of the SRG for closed linear operators,…

Systems and Control · Electrical Eng. & Systems 2026-04-10 Talitha Nauta , Richard Pates

Scaled Relative Graphs (SRGs) provide a novel graphical frequency-domain method for the analysis of Nonlinear (NL) systems. In this paper, we restrict the SRG to particular input spaces to compute frequency-dependent incremental gain bounds…

Systems and Control · Electrical Eng. & Systems 2025-09-10 Julius P. J. Krebbekx , Roland Tóth , Amritam Das

Scaled Relative Graphs (SRGs) provide a novel graphical frequency-domain method for the analysis of nonlinear systems. However, we show that the current SRG analysis suffers from a pitfall that limits its applicability in analyzing…

Systems and Control · Electrical Eng. & Systems 2025-07-22 Julius P. J. Krebbekx , Roland Tóth , Amritam Das

Scaled relative graphs were recently introduced to analyze the convergence of optimization algorithms using two dimensional Euclidean geometry. In this paper, we connect scaled relative graphs to the classical theory of input/output…

Systems and Control · Electrical Eng. & Systems 2021-10-08 Thomas Chaffey , Fulvio Forni , Rodolphe Sepulchre

Scaled Relative Graphs (SRGs) provide a novel graphical frequency-domain method for the analysis of nonlinear systems. However, we show that the current SRG analysis suffers from a pitfall that limit its applicability in analyzing practical…

Systems and Control · Electrical Eng. & Systems 2025-04-14 Julius P. J. Krebbekx , Roland Tóth , Amritam Das

The paper extends the Scaled Relative Graph (SRG) framework of Ryu, Hannah, and Yin from Hilbert spaces to normed spaces. Our extension replaces the inner product with a regular pairing, whose asymmetry gives rise to directional angles and,…

Optimization and Control · Mathematics 2026-04-06 Alberto Padoan

Davis-Yin splitting (DYS) has found a wide range of applications in optimization, but its linear rates of convergence have not been studied extensively. The scaled relative graph (SRG) simplifies the convergence analysis of operator…

Optimization and Control · Mathematics 2024-04-23 Jongmin Lee , Soheun Yi , Ernest K. Ryu

Scaled Relative Graphs (SRGs) provide an intuitive graphical frequency-domain method for the analysis of Nonlinear (NL) systems, generalizing the Nyquist diagram. In this paper, we develop a method for computing $L_2$-gain bounds for Lur'e…

Systems and Control · Electrical Eng. & Systems 2026-03-11 Julius P. J. Krebbekx , Roland Tóth , Amritam Das , Thomas Chaffey

Scaled relative graphs (SRGs) enable graphical analysis and design of nonlinear systems. In this paper, we present a systematic approach for computing both soft and hard SRGs of nonlinear systems using dynamic integral quadratic constraints…

Optimization and Control · Mathematics 2026-04-03 Timo de Groot , Tom Oomen , W. P. M. H. Heemels , Sebastiaan van den Eijnden

This paper presents a novel approach to stability analysis for grid-connected converters utilizing Scaled Relative Graphs (SRG). Our method effectively decouples grid and converter dynamics, thereby establishing a comprehensive and…

Systems and Control · Electrical Eng. & Systems 2026-01-23 Eder Baron-Prada , Adolfo Anta , Florian Dörfler

In this paper, we utilize a variant of the scaled relative graph (SRG), referred to as the $\theta$-symmetric SRG, to develop a graphical stability criterion for the feedback interconnection of a cascade of systems. A crucial…

Systems and Control · Electrical Eng. & Systems 2025-10-09 Xiaokan Yang , Ding Zhang , Wei Chen , Li Qiu

Continued fractions are classical representations of complex objects (for example, real numbers) as sums and inverses of simpler objects (for example, integers). The analogy in linear circuit theory is a chain of series/parallel one-ports:…

Systems and Control · Electrical Eng. & Systems 2022-11-23 Thomas Chaffey , Alberto Padoan

Graphical methods for system analysis have played a central role in control theory. A recently emerging tool in this field is the Scaled Relative Graph (SRG). In this paper, we further extend its applicability by showing how the SRG of…

Systems and Control · Electrical Eng. & Systems 2026-03-06 Talitha Nauta , Richard Pates

We investigate the quantum networks that their nodes are considered as quantum harmonic oscillators. The entanglement of the ground state can be used to quantify the amount of information one part of a network shares with the other part of…

Quantum Physics · Physics 2016-11-25 M. A. Jafarizadeh , F. Eghbalifam , S. Nami
‹ Prev 1 2 3 10 Next ›